Journal articles on the topic 'Traffic circles – Design and construction'
To see the other types of publications on this topic, follow the link: Traffic circles – Design and construction.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Traffic circles – Design and construction.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Xia, Qian, and Lei Shi. "An Optimized Design Scheme for Roundabout Traffic Management." Applied Mechanics and Materials 253-255 (December 2012): 1884–89. http://dx.doi.org/10.4028/www.scientific.net/amm.253-255.1884.
Full textAbstract:
Roundabouts have since become increasingly common. Statistically, roundabouts are safer for drivers and pedestrians than both traffic circles and traditional intersections. However, in the actual life, now roundabout faces the challenge that the traffic flow exceeds the limit. In order to decrease the construction cost and maximize the benefits, in accordance with the analysis of the roundabout capacity and traffic signal control, the author put forward a self-suitable red light adjustment scheme based on BP neural network. At last, integrating the roundabout traffic management system actually investigated, selecting the data to do the test to prove the validity of the mentioned scheme.
2
Xing, Yang, and Yangzhi Sheng. "Research on the Oretical Innovation and Design Method of the Integration of Highway and Toruism." E3S Web of Conferences 233 (2021): 01112. http://dx.doi.org/10.1051/e3sconf/202123301112.
Full textAbstract:
Highway is an important carrier for the integration of transportation and tourism. At present, there are still some problems in the integration of highway transportation and tourism, such as unclear connotation, unclear thinking, inadequate understanding and incomplete measures. In order to better promote the integration development of Expressway and tourism t solve the problems encountered in the practice of various places, the advantages and disadvantages of the integration of Expressway and tourism are analyzed on the basis of a comprehensive review of the current development situation and needs of tourism and transportation industry. According to the basic characteristics of expressway, this paper innovatively puts forward the basic connotation, main characteristics, main contents and construction significance of expressway traffic integration. According to the requirements of the integration and development of tourism and transportation, this paper probes into the point-axis theory, circle theory and tourism flow theory related to tourism and transportation, and puts forward the application value of each theory in the field of tourism and transportation. Under the guidance of relevant theories, the main ideas of highway traffic integration, the basic elements and key design points of highway traffic integration are put forward. Comparing with the traditional expressway, the paper puts forward the main points of the route design of the tourist expressway, the main points of the interchange design of the tourist expressway which is different from the traditional expressway kilometers, the three types of the service area of the tourist expressway, and the four innovative design modes of the tourist Expressway sightseeing and recreation area. Combining with the relevant theories of tourism flow, this paper innovatively puts forward the traffic volume forecasting method of tourism expressway. Finally, from the land, capital and construction mode, the paper puts forward the guarantee measures of highway traffic integration.
3
Li, Qing, Kaili Peng, and Peng Cheng. "Community-Level Urban Green Space Equity Evaluation Based on Spatial Design Network Analysis (sDNA): A Case Study of Central Wuhan, China." International Journal of Environmental Research and Public Health 18, no. 19 (September 28, 2021): 10174. http://dx.doi.org/10.3390/ijerph181910174.
Full textAbstract:
Urban green spaces (UGSs) provide numerous irreplaceable environmental and social benefits to humankind, but the lack of baseline information makes it difficult to propose a reasonable greening strategy so as to achieve an equitable allocation of community green spaces. This paper divides UGSs into three classes using the spatial design network analysis (sDNA) and quantifies the UGS accessibility of communities in central Wuhan. Based on these results and the Gini coefficient, we analyze the UGS equity of the spatial distribution at the community level, then propose future greening strategies both at the city and community levels. The results show that the railway station and old Wuhan city are the core areas of traffic network strength (TNS). UGSs are evenly distributed in the core areas of TNS, but the number of UGSs in non-core areas is small, and their distribution is relatively uneven, and the number of communities with medium UGS accessibility is the largest, carrying the densest residential population. Most communities perform well in terms of UGS equity, but the UGS equity of 163 communities, covering a population of more than one million, remains to be improved. The method and conclusions of this study will contribute to the future greening policy making of 965 communities in central Wuhan, thus promoting the orderly planning and high-quality construction of community living circles.
4
WANG, Mou. "Strategic and Economic Significances of the Construction of South Silk Road." Chinese Journal of Urban and Environmental Studies 03, no. 02 (June 2015): 1550016. http://dx.doi.org/10.1142/s2345748115500165.
Full textAbstract:
Ever since ancient times, South Silk Road has been an important business channel that connects China and Southeast Asian countries. In ancient times, it had great significances for international trades and cultural exchanges; today, South Silk Road constitutes the historical foundation for modern national defense, international trade and peaceful diplomacy with countries along the Road. As the sub-regional cooperation of the "One Belt and One Road" strategy, South Silk Road plays an important role in consolidating peripheral diplomacy and promoting opening and development of China's southwest region, which is of great strategic and economic significance. This paper proposes to initiate a cooperative construction plan, together with countries along South Silk Road, grounded upon integrative top design for promoting the development of South Silk Road. Branches of Silk Road Fund and Asian Infrastructure Investment Bank (AIIB) would be encouraged to establish in Kunming. The plan would also support implementation of cooperative projects. It is expected to coordinate Sichuan and Yunnan Provinces to build Southeast Asian Economic Circle and to construct logistic and transport platforms of Yangtze Economic Belt; through integrating shipping and railway transportation, it would establish traffic system with high speed and low costs, and a South Silk Road Tourist Belt would be constructed for the emergence and proliferation of cultural exchanges and cross-border tourism products with international influences.
5
Dakhil, Ali, Dheyaa Alobaidi, and Saba Shaheed. "Studying and evaluating the performance of pedestrian crossing facilities in Babil governorate." Przegląd Naukowy Inżynieria i Kształtowanie Środowiska 28, no. 3 (September 19, 2019): 417–31. http://dx.doi.org/10.22630/pniks.2019.28.3.39.
Full textAbstract:
Walking is one of the oldest means of mobility. It is an indispensable necessity to reach destinations despite the fact that walking or walking is one of everyday activities of man, which have positive effects on health, and activity on the one hand; vehicles cannot reach destinations only required by often walking from the other. The main problem address by the research is the random passage of the sieve and uncontrolled when it is most designs for the city’s road network have not addressed. This fundamental problem as well as the lack of a city to the safe facilities to cross the pedestrian. Therefore, this paper is a trial to study and analyze the current reality of crossing the sap then find solutions and treatments that reduce or limit the overlap between different traffic events and events crossing the pedestrian. Field data on the syllabic traffic volumes collected in all areas of the study (peak hour volume) and the photographic technique method. The study chose four areas to study the sap (60th Street, 40th Street, Al-Hussein, intersection circle at Babel Health Department), which are residential, commercial and educational zones, representing diversity in land use and scheme sidewalk and the design of the city of Hilla. The study attempted to show the state of lateral walks. The study also used the questionnaire method (interview survey) to determine the suitability of pedestrian bridges in transit and land transit. The study concluded that the area of Al-Hussein represents the highest traffic volumes of the sieve in addition to the lack of it the sidewalks in terms of absorption and quality and abuses. As well as the reluctance to use pedestrian bridges in transit in the area of 60th Street through high ground transit time, which necessitates the establishment of dual-step (fixed and mobile) – legislation and education through all means.
6
Wu, Xinyang, and Chuying Chen. "Spatial Distribution and Accessibility of High Level Scenic Spots in Inner Mongolia." Sustainability 14, no. 12 (June 15, 2022): 7329. http://dx.doi.org/10.3390/su14127329.
Full textAbstract:
Based on the data of high-level scenic spots in Inner Mongolia, the methods of the nearest neighbor index, kernel density, accessibility, and spatial autocorrelation are used to systematically sort out the spatial distribution pattern, accessibility, and influencing factors of various types of scenic spots. The following conclusions are drawn from the analysis. The spatial distribution of different types of tourist attractions in Inner Mongolia is in a state of “small agglomeration and large dispersion”. The spatial accessibility of different types of tourist attractions in Inner Mongolia is generally poor, and the temporal accessibility presents an inverted U-shaped distribution over time. The county-level accessibility of different types of scenic spots in Inner Mongolia is relatively poor, basically showing an oblique distribution pattern of low in the west and high in the east. The influencing factors of the spatial distribution pattern and accessibility of various scenic spots in Inner Mongolia mainly include the natural environment, transportation network, resource endowment, and economic level. This study proposes an optimal path for accessibility according to the aspects of the design of tourism scenic areas in a circle and the construction of tourist traffic and facilities, as well as the linkage design of tourist routes.
7
Fauzi, A. Rizki, and Markawie Markawie. "DESIGN OF COMPOSITE GIRDER STRUCTURE BRIDGE OF SELUANG-1 RIVER PT LIFERE AGRO KAPUAS, KAPUAS DISTRICT." CERUCUK 4, no. 1 (June 7, 2021): 1. http://dx.doi.org/10.20527/crc.v4i1.3576.
Full textAbstract:
The bridge at the Seluang-1 river is located around the palm oil plantation land owned by PT Lifere Agro Kapuas, Kapuas Regency, Central Kalimantan. In this Seluang-1 river, a bridge is planned to be built to facilitate the mobilization of palm oil plantation crops and other matters as well as transportation in the PT Lifere Agro Kapuas area because before there was a bridge the transportation traffic was cut off by the river so it had to circle quite a long way. The bridge is designed as a bridge with composite girder structure type. The methodology in the design of loading uses the SNI 1725-2016 concerning on the Loading Standards for Bridges and SNI 2833-2016 concerning on the Earthquake Resilience Planning Standards for Bridges. For methodology in designing concrete structures refer to SNI 2847-2013 concerning Structural Concrete Requirements for Buildings and methodology in designing steel structures refers to SNI 1729-2015 concerning Specifications for Structural Steel Buildings. The material used for abutment uses reinforced concrete material. The methodology in calculating the bearing capacity of the foundation uses the method by Mayerhof and also the method by Kazuto Nakazawa, while the methodology in calculating the lateral bearing capacity uses the Broms method, with the efficiency of the pile using a graph by O’Neill. From the results of topographic measurements taken a bridge design with a span of 30 m with a total bridge width of 7 m. The slab design is 25 cm thick with the compressive strenght of concrete is fc’ 30 MPa (K-350). The steel girder beam used WF Profile 1350.800.100.130 and the diaphragm beam used WF Profile 250.125.6.9 with BJ55 steel quality (fy 410 MPa). Whereas in the lower structure, the abutment designed with a height of 350 cm, a width of 320 cm and a length of 850 cm, was used with compressive strenght of concrete is fc’ 30 MPa (K-350). In the foundation used Spun Pile type piles with a diameter of 60 cm with a depth of 30 m piling as much as 8 piles on one abutment. Obtained Qallow = 116,37 tons > Qload = 114,69 tons so that the foundation is declared safe. The planned budget for the construction of a bridge on the Seluang-1 river is Rp 8.990.566.000,00.-
8
Chiang, Ching-Shoei, and Hung-Chieh Li. "Area-Construction Algorithms Using Tangent Circles." Advances in Technology Innovation 5, no. 2 (April 1, 2020): 126–34. http://dx.doi.org/10.46604/aiti.2020.819.
Full textAbstract:
Computer aided geometric design employs mathematical and computational methods for describing geometric objects, such as curves, areas in two dimensions (2D) and surfaces, and solids in 3D. An area can be represented using its boundary curves, and a solid can be represented using its boundary surfaces with intersection curves among these boundary surfaces. In addition, other methods, such as the medial-axis transform, can also be used to represent an area. Although most researchers have presented algorithms that find the medial-axis transform from an area, a algorithm using the contrasting approach is proposed; i.e., it finds an area using a medial-axis transform. The medial-axis transform is constructed using discrete points on a curve and referred to as the skeleton of the area. Subsequently, using the aforementioned discrete points, medial-axis circles are generated and referred to as the muscles of the area. Finally, these medial-axis circles are blended and referred to as the blended boundary curves skin of the area; consequently, the boundary of the area generated is smooth.
9
Hu, Xiang Dong, and Jin Tai Wang. "The Triaxial Shear Test of Artificially Frozen Soils in Tunnel Construction of Hong Kong." Applied Mechanics and Materials 353-356 (August 2013): 1653–56. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1653.
Full textAbstract:
Three kinds of frozen soils were tested for artificial ground freezing (AGF) project in the tunnel construction of Stonecutters Island Sewage Treatment Works, Hong Kong. Triaxial shear test was conducted to obtain shear strength of frozen soils. From the test, Mohr circles and their envelopes were obtained. According to Mohr circles, shear strength of the three soils was gained. Comparing the three soils, we found the potential weaken layer which might cause failure in the construction. All the parameters obtained can be used in design and construction of AGF practice.
10
Usikalu, M. R., A. Okere, O. Ayanbisi, T. A. Adagunodo, and I. O. Babarimisa. "Design and Construction of Density Based Traffic Control System." IOP Conference Series: Earth and Environmental Science 331 (October 16, 2019): 012047. http://dx.doi.org/10.1088/1755-1315/331/1/012047.
Full text
11
Chen, Lei, and Hong Sheng Qiu. "Structure Design of Car Overpass in the Urban Rail Construction." Advanced Materials Research 1006-1007 (August 2014): 38–41. http://dx.doi.org/10.4028/www.scientific.net/amr.1006-1007.38.
Full textAbstract:
The car overpass can play a significant role in easing traffic pressure. So for maximum easing traffic pressure, two types of car overpass are put forward: steel trussed girder-bridge and steel trussed cable-stayed bridge. Then establish a three-dimensional finite element model of the steel truss bridge and cable-stayed bridge by ANSYS. According to stress analysis and comparison of the steel truss and steel truss cable-stayed, the cable-stayed structure can enhance structural rigidity and strength, and have little influence on traffic.
12
Boal, Jan List. "Applications: Two Geometry Applications." Mathematics Teacher 83, no. 8 (November 1990): 655–58. http://dx.doi.org/10.5951/mt.83.8.0655.
Full textAbstract:
Fitting circles and straight lines together smoothly has been a standard problem in geometry since the time of Euclid. Last summer while working as a consultant for a machine-design company that manufactures precision components for projectile textile looms, I was asked to solve the two nonstandard geometry problems that follow. The problems arose in the design of a shuttle returner for a loom and required the construction of two circles that were to interface smoothly with another circle and two straight lines. In figure 1 is shown the end of the shuttle returner with the desired circles indicated at A and B.
13
Li, Qiang, Benjamin Mahaffay, and Jeffrey Gagnon. "Evaluation of Asphalt Drainable Base Structural Performance for Flexible Airport Pavement Design." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 23 (August 19, 2018): 128–36. http://dx.doi.org/10.1177/0361198118773186.
Full textAbstract:
In 2014, the Federal Aviation Administration’s (FAA) National Airport Pavement Test Facility (NAPTF) completed construction of its flexible pavement test section, Construction Cycle 7 (CC7). Among the objectives of CC7 was to study the performance of an asphaltic drainable base pavement section compared with a P-209 aggregate base pavement section under full-scale airport loading. This research addresses the pre-traffic material characterization, full-scale traffic test data analysis and post-traffic test data analysis of these two pavement sections in dry conditions. This paper will discuss the preliminary results from laboratory testing and full-scale traffic tests for material properties which may be used in design and construction specifications to improve FAA pavement design software (FAARFIELD).
14
Zhao, Na Le, and Tian Ran Zhou. "On the Design of Freeway Traffic Safety Information Platform." Advanced Engineering Forum 6-7 (September 2012): 468–73. http://dx.doi.org/10.4028/www.scientific.net/aef.6-7.468.
Full textAbstract:
With the rapid development of urbanization, freeway with the advantage of high throughput and speed becomes an important part of the urban construction. Complex fators such as normal traffic, special events and environment raise a problem for the freeway traffic safety. In this paper, an informational approach is used to solve this problem. We propose a novel freeway traffic safty information platform and explain the design of key modules. The system and method proposed in this paper will be a reference for the freeway informatization construction in the future.
15
Lou, James Z. "Network and Communication Design of a Work Zone Intelligent Transportation System." Transportation Research Record: Journal of the Transportation Research Board 1910, no. 1 (January 2005): 64–71. http://dx.doi.org/10.1177/0361198105191000108.
Full textAbstract:
Road construction on major freeways is a primary cause of traffic incidents and delays. One approach to improve traffic mobility and safety in construction work zones is to use intelligent transportation systems (ITSs), which can effectively enhance work zone traffic management through advanced surveillance and communication technologies. Although conceptually similar to a traditional advanced traffic management system, a work zone ITS has unique network and communication design requirements. The Palm Beach County, Florida, Interim Traffic Management System (ITMS) was a work zone ITS that was successfully deployed in the summer of 2003. Using Palm Beach County ITMS as an example, this paper provides technical guidelines for applying cutting-edge technologies, such as wireless communication, video compression, and Internet protocol encapsulation, in designing a work zone ITS.
16
McGuire, Patrick, Dennis Young,, John Ciulis, and Charles E. Mayer. "Design-Construction of Detroit Metropolitan Airport Air Traffic Control Tower." PCI Journal 36, no. 6 (November 1, 1991): 38–50. http://dx.doi.org/10.15554/pcij.11011991.38.50.
Full text
17
Qin, Yi. "Research on Intelligent Traffic Model Based on Neural Network Algorithm." Journal of Physics: Conference Series 2074, no. 1 (November 1, 2021): 012036. http://dx.doi.org/10.1088/1742-6596/2074/1/012036.
Full textAbstract:
Abstract For the national economic construction and social development, intelligent traffic safety design has a very important role. In addition, cars have entered thousands of households in recent years, and the flow of intelligent traffic has increased significantly. The transformation and design of intelligent traffic safety facilities is an important work related to people’s life safety. Building with GIS technology as the core, the computer interlocking simulation system and join the safety of the application of computer technology, network communication technology, the grading management mode, the implementation of traffic safety monitoring and management of the whole process of engineering construction in the true sense realize the standardization and systematization of safety information construction process management, so that they can master the traffic engineering construction all aspects of the data and safety information, guarantee the quality of project construction.
18
Bryden, James E., Laurel B. Andrew, and Jan S. Fortuniewicz. "Work Zone Traffic Accidents Involving Traffic Control Devices, Safety Features, and Construction Operations." Transportation Research Record: Journal of the Transportation Research Board 1650, no. 1 (January 1998): 71–81. http://dx.doi.org/10.3141/1650-09.
Full textAbstract:
There were 496 work zone traffic accidents on New York State Department of Transportation construction projects from 1994 through 1996. These accidents involved impacts with work zone traffic control devices and safety features; construction features, such as pavement bumps and joints; drainage features; excavations and materials; and construction vehicles, equipment, and workers. These items, which include all of the features introduced into the roadway environment by construction activity, represent one-third of all work zone accidents and 37 percent of those involving serious injury. Channelizing devices, arrow panels, signs, and other traffic control devices generally resulted in little harm when impacted. Impact attenuators, both fixed and truck mounted, also performed well. Although portable concrete barriers prevent vehicle intrusions, impacts with barrier are severe events. Barriers must be properly designed and limited to only those locations where they are needed to protect more serious hazards. Construction vehicles, equipment, and workers were involved in over 20 percent of all work zone accidents, resulting in serious injuries. Although intrusions by private vehicles into work spaces are a serious concern, construction vehicles, equipment, and workers in open travel lanes are also a serious concern. Good design of work zone traffic control plans, combined with adequate training and supervision of workers, is essential to control both concerns.
19
Gan, J. G., T. C. Woo, and K. Tang. "Spherical Maps: Their Construction, Properties, and Approximation." Journal of Mechanical Design 116, no. 2 (June 1, 1994): 357–63. http://dx.doi.org/10.1115/1.2919386.
Full textAbstract:
The Gaussian map and its allied visibility map on a unit sphere find wide applications for orientating the workpiece for machining by numerical control machines and for probing by coordinate measurement machines. They also provide useful aids in computerized scene analysis, computation of surface-surface intersection, component design for manufacturing and fabrication procedures. Spherical convex hulls and spherical circles are two geometric constructs used to approximate the Gaussian maps and the visibility maps. The duality and the complementarity of these spherical maps are examined so as to derive efficient algorithms.
20
Lapenangga, Apridus, Yohana Rowa, and Meryani Lakapu. "MATEMATIKA DALAM ARSITEKTUR: KONSEP SUSUNAN BILANGAN REAL DALAM KONSTRUKSI ATAP LOPO DI BENTENG NONE." ATRIUM Jurnal Arsitektur 6, no. 1 (June 5, 2020): 11–22. http://dx.doi.org/10.21460/atrium.v6i1.5.
Full textAbstract:
Title: Mathematics in Architecture: The Concept of Numbers in Roof Structure Construction of Fort None Lopo
Fort None is a traditional fortress in which there are traditional buildings of the Dawan people, namely Lopo and Ume Kbubu. One of the Lopo in this area was once burned and has not been rebuilt. This is one of the reasons this study was conducted, to find out the mathematical elements in Lopo construction which can be useful as a design guidelines for other Lopo building construction. This study aims to analyze in depth the concept of configuration of real numbers on the Lopo roof construction in Benteng None, so the method used is qualitative research with ethnographic design. This discussion is carried out by analyzing three construction elements on the Lopo roof, namely: 5 inner circles, 26 outer circles and rectangles on the Lopo roof. So, it can be concluded that some construction elements on the Lopo roof which are mathematically analyzed show the existence of the concept of real number configuration. From this discussion, the results show that there are types of real number configuration, including: Monotonic real numbers descending, finite real numbers, fixed real numbers with fixed differences and real numbers with non-fixed differences.
21
Cha, Juhwan, and Young Kim. "Design Principles of Early Stone Pagodas in Ancient Korean Architecture: Case Studies on the Stone Pagodas at Chŏngnimsa and Kamŭnsa Buddhist Temples." Religions 10, no. 3 (March 18, 2019): 208. http://dx.doi.org/10.3390/rel10030208.
Full textAbstract:
Ancient books on East Asian mathematics introduced to the Korean Peninsula enrich our understanding of the arithmetic notions that mold the creative thought processes of the ancients. They believed that all objects in the universe could be composed of circles and squares and all items could be expressed in terms of geometrical profiles. Through the combination of circles and squares, the ancient East Asians expressed the order of the world and unraveled it mathematically. These principles are evident in the construction principles of early Korean stone pagodas. In particular, the square root of 2 (√2) is a very important number in the delineation represented in the consolidation of inscribed and circumscribed circles with squares. Further, the square root of 2 is applied as a design principle in the construction of the stone pagodas at the temples Chŏngnimsa and Kamŭnsa. This article demonstrates that the ancients on the continuous impact of the Jiuzhang Suanshu and the Zhoubi Suanshu constructed the pagodas complying with design principles based on the arithmetic and geometric proportional systems of √2 times, which are intended to adjust compositional proportions and the gradual decrease in length to shape the tripartite partition of the foundation, the pagoda body, and the finial in stone pagodas.
22
Chu, Jiawen. "Research on Highway Traffic Safety and Facility Optimization." Journal of World Architecture 6, no. 6 (December 21, 2022): 18–23. http://dx.doi.org/10.26689/jwa.v6i6.4559.
Full textAbstract:
Traffic safety is one of the problems that need to be addressed in the construction and development of expressway. The key content of the design of traffic safety facilities is optimizing traffic safety facilities to reduce the probability of traffic safety accidents. Based on the analysis of highway safety facilities design optimization requirements, this paper puts forward the corresponding optimization measures, and explores the innovation of safety facilities design, in hopes of providing reference for the design of highway safety facilities.
23
MAUW, S., W. T. WIERSMA, and T. A. C. WILLEMSE. "LANGUAGE-DRIVEN SYSTEM DESIGN." International Journal of Software Engineering and Knowledge Engineering 14, no. 06 (December 2004): 625–63. http://dx.doi.org/10.1142/s0218194004001828.
Full textAbstract:
Studies have shown significant benefits of the use of Domain-Specific Languages (DSL) in software engineering. We discuss a software engineering methodology that fully exploits these benefits. The methodology, called the Language-Driven Approach (LDA), is centred around the design of a DSL. It prescribes a staged development of a DSL, which is tailored to the system-under-construction. On the basis of a domain analysis, a formal definition of the problem is obtained. This formal problem definition contains all the relevant ingredients for designing the syntax, the semantics and the pragmatics, which together comprise the DSL. The methodology is illustrated by an elaborate example dealing with the problem of regulating traffic lights at a traffic junction.
24
Peral, Inma, Jonathan McKinlay, Michael Knapp, and Salvador Ferrer. "Design and construction of multicrystal analyser detectors using Rowland circles: application to MAD26 at ALBA." Journal of Synchrotron Radiation 18, no. 6 (September 22, 2011): 842–50. http://dx.doi.org/10.1107/s0909049511031529.
Full textAbstract:
A concept is given for describing multicrystal analyser detectors (MADs), as they are in use for synchrotron powder diffraction, on the basis of the Rowland circle construction. The Rowland circle is typically used to describe focusing geometries and can be adapted for the case of MADs working at a single energy as well as in a limited energy range. With this construction it is also possible to quantify and optimize the walk of the beam along non-central crystals which is inevitable in certain detector designs. The results of this geometrical inspection are correlated with a real detector design that is implemented at the ALBA synchrotron facility in Spain. An error budget is given to estimate the influence and amount of tolerance of the manufacturing process.
25
Silchenkov, Dmitry, Yuliya Silchenkova, Galina Zakozhurnikova, and Sergey Zakozhurnikov. "ADAPTATION OF THE TRAFFIC SIGNAL CONTROL DESIGN METHOD TO A HAMBURGER ROUNDABOUT." Architecture and Engineering 6, no. 3 (September 29, 2021): 70–76. http://dx.doi.org/10.23968/2500-0055-2021-6-3-70-76.
Full textAbstract:
Introduction: Currently, hamburger roundabouts with traffic signal control have limited application in the road networks of large cities. During analysis of scientific and technical literature, we established that it does not contain any systematic information on the possibility of their application or methods to determine their parameters. Purpose of the study: We aimed to adapt Webster’s method of traffic signal design to hamburger roundabouts with traffic signal control, considering the specifics of traffic management. Methods: In the course of the study, we used methods of traffic analysis and simulation in the field-proven Aimsun software, recommended for use by scientific and technical literature on traffic management. We also assessed the efficiency of the adapted method by using the simulation results and comparing average transport delays at intersections considering the standard and adapted methods. Results: It was established that the adapted method of traffic signal cycle design reduces the average transport delay by 28% on average.
26
Bjelošević, Radenka, Dragan Gataric, Aleksandar Đukić, Milan Sandić, Mladen Pajić, and Stojan Stevanović. "Evaluation of conditions in the traffic flow on the crossroad of the main road M4 and Milutin Milankovic Boulevard in Banja Luka." Put i saobraćaj 66, no. 1 (March 26, 2020): 31–46. http://dx.doi.org/10.31075/pis.66.01.08.
Full textAbstract:
The design and construction of roundabouts, as a solution that will replace the classic intersection, has great application in our area, because it has proven to be the best traffic solution. The aim of this paper is to determine whether the roundabout will provide better traffic conditions than a traffic light. Baseline data were collected by counting traffic at the intersection in question and then processed in the SIDRA INTERSECTION software program. The program analysis covers the following criteria: service level, time losses, costs and emissions. Reducing speed has increased the safety of all road users, which in addition to the environmental aspect is the most important positive effect. With traffic congestion, traffic intensity and service levels have been raised. The construction of the roundabout would continue the trend of construction of roundabouts in Banja Luka, which, in addition to traffic amenities, gives this city an aesthetically pleasing new dimension.
27
Shang, Mei. "Strengthening Design and Construction Technique of Simply Supported Girder Bridge." Applied Mechanics and Materials 484-485 (January 2014): 774–78. http://dx.doi.org/10.4028/www.scientific.net/amm.484-485.774.
Full textAbstract:
With Deepening Of Domestic Market Opening Up To The Outside World And Fast Developing of domestic economy, many old bridges, especially the highway bridges constructed during 1960~1970, bear the heavy traffic loads, which made old highway strengthening project the very pressing task. In this paper, the reason why old bridge is damaged, the requirements for strengthening technology and construction plan for bridge strengthening are analyzed in detail, hopefully, there are some useful proposals provided for old bridge transforming.
28
Tang, Ziqiang. "Design and Construction of the Circular Shape Shaft Using the Reverse Construction Method." E3S Web of Conferences 198 (2020): 02011. http://dx.doi.org/10.1051/e3sconf/202019802011.
Full textAbstract:
Restricted by the environment and the city’s planning, some pipe jacking used for the HV cable tunnel have to pass through some roads which has been build. Different kind of equipment has certain applicability in the pipe jacking construction procedure, especially with the geological condition, and encountering in the boulder is a common problem in the residual soil or in the strong weathered rock stratum, in this situation, a vertical shaft is needed to remove the boulder. In order to save the site area, a new shaft which is in circular shape is designed, and this paper introduces the main procedure of how to design and construct the new circular shaft. In a Fuzhou HV cable tunnel, the new shape shaft clears away the stone in the clay successfully, and reduces the impact on the ground traffic, the design and construction procedure of the new shaft have been analyzed in this paper, which provides reference for similar construction.
29
Jiang, Jingwen. "Intelligent City Traffic Scheduling Optimization Based on Internet of Things Communication." Wireless Communications and Mobile Computing 2021 (June 4, 2021): 1–10. http://dx.doi.org/10.1155/2021/7823982.
Full textAbstract:
The application of Internet of Things technology in the construction of smart city traffic system is the inevitable choice of smart city traffic system to promote the development of road traffic in the process of urban development. First of all, the traffic in the city, on the basis of the research background and significance, research on the Internet of Things, and wisdom of the construction of the urban traffic are summarized and analyzed; secondly, on the basis of requirement analysis and feasibility analysis, combined with the principles and goals of the construction of the system, the establishment of the model of urban traffic based on Internet of Things and the city’s architecture based on Internet of Things intelligent urban traffic system and design are put forward. Finally, an improved ant colony algorithm is proposed in the aspect of system optimal path algorithm, and its superiority is verified. The results show that complementary networks can significantly improve the robustness of networks. These conclusions provide a theoretical basis for the construction of smart city public transport network traffic scheduling and provide model support for the operation and management of smart city public transport.
30
Shao, Zhiguo, Li Zhang, Chuanfeng Han, and Lingpeng Meng. "Measurement and Prediction of Urban Land Traffic Accessibility and Economic Contact Based on GIS: A Case Study of Land Transportation in Shandong Province, China." International Journal of Environmental Research and Public Health 19, no. 22 (November 11, 2022): 14867. http://dx.doi.org/10.3390/ijerph192214867.
Full textAbstract:
As the basic support of regional economic and social development, land transportation is one of the important engines to promote regional development, and its construction and improvement will have an important impact on the regional economic pattern. Based on the road network of Shandong Province, China, in 2020, according to the Medium and Long-term Development Plan of Comprehensive Transportation Network of Shandong Province (2018–2035), this paper uses the GIS network analysis method, weighted average travel time, modified gravity model and other methods to study the land traffic accessibility and economic relation intensity of prefecture-level cities in Shandong Province, China, in 2020 and 2035. The results show that the distribution of land traffic accessibility in Shandong Province, China, shows a certain regional main road pointing characteristic in 2020, and the urban accessibility level gradually decreases along the Beijing–Shanghai high-speed railway and Jinan-Qingdao high-speed railway to the periphery. In 2035, the land traffic accessibility of Shandong Province, China, will be more spatially distributed as “concentric circles”. From 2020 to 2035, the urban land traffic accessibility and the balance of economic contact in Shandong Province, China, will be improved significantly. The research results can provide a theoretical reference for optimizing the traffic network pattern and promoting urban economic contact in Shandong Province, China.
31
Yan, Ge. "Operation Concept and Mode Selection Design of Public Parking Lot." Academic Journal of Science and Technology 3, no. 2 (October 28, 2022): 209–13. http://dx.doi.org/10.54097/ajst.v3i2.2175.
Full textAbstract:
With the continuous improvement of urban economic development and modernization, the number of motor vehicles has shown a sharp increase in recent years. At the same time, the construction of public parking lots is very backward, and parking spaces are seriously insufficient, leading to increasingly serious problems, such as urban traffic congestion and insufficient parking spaces. The management mode of public parking lot is backward, which is not conducive to the improvement of parking efficiency and may have a negative impact on traffic. This paper mainly analyzes the difference in the management concept of public parking places for social vehicles, and then investigates and analyzes the reasons for poor management and lagging construction of public parking places, and puts forward suggestions to improve the current public parking places.
32
Chen, Ao-Tian, and Tian-Ao Chen. "Intelligent Vehicle Visual Navigation Algorithm Based on Visual Saliency Improvement." Journal of Sensors 2022 (September 17, 2022): 1–12. http://dx.doi.org/10.1155/2022/5865703.
Full textAbstract:
The automobile has gradually developed into an indispensable tool for human daily travel and transportation. Further reducing the traffic accident rate to improve the traffic safety level and improving the road traffic safety performance is a global issue worthy of common concern for human beings, moreover, it is a common concern for political circles, scholars, researchers, and other related workers in the field of transportation all over the world. Therefore, in this paper, by studying a large amount of literature and carrying out relevant model construction, based on the theories of visual navigation basic theory, intelligent vehicle theory and visual saliency improvement theory, etc., the intelligent vehicle visual navigation with visual saliency improvement is studied in depth through the feature point tracking algorithm research method (including three feature point methods and one optical flow method), and it is concluded that the intelligent vehicle with visual saliency improvement is better than the ordinary. The conclusion that the overall performance of the vehicle is better in all aspects. The following discussions are also proposed for the algorithm improvement: acquisition of visual saliency images; continuous enhancement of visual saliency of images; reasonable application of filtering algorithm.
33
Melova, Tatiana, Martin Kolousek, and Tomas Priscak. "3D Traffic Noise Simulation." Applied Mechanics and Materials 617 (August 2014): 116–19. http://dx.doi.org/10.4028/www.scientific.net/amm.617.116.
Full textAbstract:
The main task of this contribution was to explain the ways of the spread of noise pollution from the traffic. Descriptive simulation explains justification of each road construction by a simple way. It is confirmed that the projects which had contained a noise study simulation were easier to enforce for public than those without it. Also vegetation growth simulation in different time horizons is already slowly becoming an important part of the urban transport projects, due to the increasing of environmental pressure. Practice shows that the design value of these simulations is increasing because of the rising of the global traffic load.
34
Arliansyah, Joni, and Ragil Tri Bawono. "Analysis of the Emission Reduction through Performance Improvement of Intersection and Network nearby Using Micro Simulation Program." Open Transportation Journal 12, no. 1 (November 30, 2018): 332–43. http://dx.doi.org/10.2174/1874447801812010332.
Full textAbstract:
Introduction:Palembang as one of the big cities in Indonesia is the capital city of South Sumatra Province. Congestion occurs at the main intersections of the city, one of which is Simpang Patal Pusri which has a long queue and delays in peak hour of 655 m and 490 seconds. The action performed to improve traffic performance and reduce the air pollution at this intersection was the underpass construction. This study discussed the importance of constructing an underpass together with improving geometric design and traffic management at the nearest intersections to obtain optimal results in addressing traffic problems and emissions reductions.Methods:To analyze the performance of traffic intersection and its network, Vissim simulation micro program and Program Moves were used to find out the emission values of Total Carbon, NOx and PM10 of the analyzed handling scenarios.Results:The results showed that the construction of an underpass accompanied by the improved geometric design and traffic management at the nearest intersection produced better intersection performance and emission reductions when compared to only underpass construction, where the average V/C decreased from 0.87 to 0.77, the average queue decreased from 290.3 m to 190.57 m, and the average delay decreased from 106.34 seconds to 85.07 seconds. The values of Total Carbon, NOx and PM10 also decreased significantly on all the roads in the study area.Conclusion:Based on the analysis, a scenario of the underpass construction is combined with geometric improvement and traffic management at the intersections which provides the best traffic performance and emissions reduction at either the intersections or road segments of the road network being studied.
35
B. Gopinath, N. Porchelvi, M. Curie, and R. M. Sireesha. "Analysis of Smart Sign Board Design for Road Safety using IoT." December 2022 4, no. 4 (December 21, 2022): 236–44. http://dx.doi.org/10.36548/jucct.2022.4.002.
Full textAbstract:
Traffic congestion is a major issue, particularly in urban areas where the number of vehicles on the road is continuing to rise considerably, amidst the delayed construction of road infrastructure. Researchers developed a number of traffic management systems to address this intractable issue. Despite the fact that there have been several studies on traffic management, there hasn't been enough done to examine the overall system for managing traffic on urban roads. This study aims to close the knowledge gap by providing fresh information about the current status of research into the complete Traffic Management System. The main goal is to give a comprehensive overview of the current methods suggested in the literature to address the issue of traffic congestion. Moreover, this work provides some ideas by which the road safety management can be done with the help of cloud services. As mobile technology becomes more extensively used, an evaluation approach for such smart transportation innovation strategies is explored with the help of mobile app. Therefore, based on the current research perspective, this survey offers a useful perspective on the deployment of IoT in the smart traffic management system.
36
Yang, Lan. "Research on Type Selection and Plan Design of Urban Overpass." Urban Transportation & Construction 2 (December 4, 2015): 23. http://dx.doi.org/10.18686/utc.v2i1.5.
Full textAbstract:
The urban road overpass has its own features: (1) Calculated vehicle speed is rather low; (2) The traffic organization is complex; a huge amount of non-motorized vehicles and pedestrians are present; (3) The land use is urgent, the buildings are densely distributed around and there is a network of underground pipelines; (4) The road amplitude is rather wide and section is diversified. Therefore, the type selection and design principles of urban road overpass are different from those of highway overpass: First, the form of overpass has to be compatible with the property and traffic functions of crossed road; the selected category assures safe and smooth traffic and continuous vehicle flow; The form of overpass must adapt to the local environmental conditions; an integrated consideration is made under the condition of meeting the traffic requirements in order to make a reasonable use of typography, practice economy to the project operation expense, coordinate with the environment and realize beautiful profile and stylish structure; Special attention is paid to the integration between nearby and remote profiles before an integrated consideration is made; The main line and ramp are collocated in sequence and an integrated arrangement is made; The category is selected according to the actual conditions and favorable conditions are provided for the project construction. This article integrates with the urban overpass case, elaborates on the demand for urban overpass construction and makes use of category selection of overpass to verify the scientific and reasonable properties of plan design.
37
Kiec, M., M. Tracz, and S. Gaca. "Design of Cross-Section on Roads Through Built-Up Areas." Archives of Civil Engineering 58, no. 3 (September 1, 2012): 243–57. http://dx.doi.org/10.2478/v.10169-012-0015-y.
Full textAbstract:
Abstract The research into the use of less costly modifications of road links and networks, and changes in the service of road surroundings aimed at ensuring an improvement of through traffic performance in suburban areas, and on roads passing through built-up areas as small localities, with application of simulation model, is presented in this paper. From among possible designs, the authors investigated and presented the effectiveness of two, i.e. implementation of an additional multifunctional median lane in the road cross-section, and construction of service roads with different locations of intersections (end or middle of the road section).The analysis is focused on the impact of such changes on traffic performance and road safety. The authors analysed travel speed, delay and share of platoon traffic on a uniform sections of the road for different types of road surroundings service. The study presents the results of analyses of road network before and after modification, and the assessment of:• impact of access points density and level of their use on road traffic performance,• impact of driving through road sections in built-up area on building platoon traffic,• impact of change in the cross-section type on traffic performance.
38
Cheng, Yu Lan. "Construction Technology Urumqi Outer Ring Expressway Road Reconstruction Project Expansion." Applied Mechanics and Materials 587-589 (July 2014): 965–70. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.965.
Full textAbstract:
With the continued rapid economic development in recent years, Urumqi, vehicle scale continues to expand, prompting the city traffic was a rapid growth trend, Outer Ring Road as a fast loop only existing within the city limits, borne traffic has far exceeded the original design prediction traffic volume and the actual capacity, resulting in a number of sections, interchange nodes, often made of ramp entrances become congested road, the outer ring road to solve the congestion problem, and it needs to be rebuilt to meet the expansion needs of the new era. Urumqi City East Outer Ring Expressway road expansion reconstruction project, for example, to explore the elevated expansion of the project construction methods, summarize experience in construction, hoping to provide a reference for future similar projects.
39
Bang, Karl-L., Gunnar Lindberg, and Gandhi Harahap. "Development of Guidelines Based on Life-Cycle Cost To Replace Level-of-Service Concept in Capacity Analysis." Transportation Research Record: Journal of the Transportation Research Board 1572, no. 1 (January 1997): 10–17. http://dx.doi.org/10.3141/1572-02.
Full textAbstract:
Highway capacity manuals (HCMs) from developed countries cannot be successfully applied in Indonesia because of significant differences in driver behavior, traffic composition, and level of roadside activities. The Indonesian HCM project (IHCM) was therefore started in 1991 and has resulted in a manual and software for urban traffic facilities, inter-urban roads, and motorways. The IHCM also includes traffic engineering guidelines for selection of appropriate road and intersection type and design for new construction or improvements based on life-cycle cost (LCC) analysis. The LCC model includes all relevant road-user costs (those for vehicle operations, time, accidents, and emissions) and road-producer costs (those for land acquisition, road construction, and road maintenance and operation). The LCC results identify the design alternative that has the lowest total cost and thus is the most economical for any given traffic flow. The IHCM guidelines also include traffic-performance graphs for standard road types and intersections as a function of traffic flow as well as information about accident rates and the impact of geometric design changes on safety. The guidelines assist the user with preliminary selection of the design before starting the detailed analysis. They can also be used on their own as a shortcut for planning purposes and therefore serve as a replacement for the level-of-service concept applied in the U.S. HCM.
40
Pickel, Daniel, Susan Tighe, Hassan Baaj, Rico Fung, and Eric Saunderson. "Innovative Design, Traffic Management, and Construction of Concrete Overlay Technology: Canadian Municipal Application." Transportation Research Record: Journal of the Transportation Research Board 2573, no. 1 (January 2016): 107–14. http://dx.doi.org/10.3141/2573-13.
Full text
41
Sherbina, Gennadii. "Design and Construction of Intra-block Automobile Communication Lines that Provide Traffic Safety." Transportation Research Procedia 20 (2017): 602–7. http://dx.doi.org/10.1016/j.trpro.2017.01.097.
Full text
42
Sarbini, N. N., A. N. Abdul Aziz, A. N. Mazlan, N. H. Abdul Shukor Lim, and Mohd Fairuz Ab Rahman. "Key Design Issues in the Construction Project: Conceptual and Detailed Design Review Phases." IOP Conference Series: Materials Science and Engineering 1200, no. 1 (November 1, 2021): 012028. http://dx.doi.org/10.1088/1757-899x/1200/1/012028.
Full textAbstract:
Abstract The Malaysian construction industry is among the highest ranked industries that contributes to accident and fatality rates. The Guidelines on Occupational Safety and Health in Construction Industry (Management) (OSHCIM) has introduced guidelines for design risk reduction in the construction industry. It involves determining root causes and mitigating the risk by control of the causation of accidents. The objective of this study is to identify the key design issues during the conceptual and detailed design review phases in the construction project. Although some of the design considerations have already been proposed by the OSCHIM guidelines, however, further implementation need to be diverse and versatile by considering the current design practices that are already being practiced by the industry practitioners. The methodology of this research involves document reviews, and a questionnaire survey that was used to collect answers from respondents in the construction industry. According to the results, the key design issues in the conceptual phase involve the site condition, environmental influences, ground or ground water condition, existing structure, demolition, services, adjacent to major infrastructure, traffic disruption, access for works, adjacent to other properties and projects, and site restriction. Moreover, those found in the detailed phase involve the mechanized construction system, installation of prefabrication components, ease of process, structural opening, edge line, fall hazard, accident prevention, layout optimization, ease of activities, permanent safety features, provision of access, and fall hazard. However, it is the duty of the construction industry practitioners to make sure that all other design issues are also included into their construction project risk analysis. As proposed by the OSHCIM guidelines, the review of design risks in the construction project should consider safety in all the stages: during construction, operation, maintenance, modification, and demolition. Construction Industry Development Board (CIDB)
43
Wang, Haoqing, Wen Yi, and Yannick Liu. "Optimal Route Design for Construction Waste Transportation Systems: Mathematical Models and Solution Algorithms." Mathematics 10, no. 22 (November 18, 2022): 4340. http://dx.doi.org/10.3390/math10224340.
Full textAbstract:
A huge amount of construction waste is generated in construction sites every day that needs to be transported by vehicle to disposal facilities for processing. Unlike in most typical transportation problems, once these vehicles are loaded with construction waste, they must travel directly to the disposal facility. Moreover, there are different types of construction waste that may require handling by different disposal facilities. In this paper, we develop a model and algorithm for identifying the optimal transportation routes specific to construction waste transportation. Our results can not only minimize the overall costs for both the logistics company and the contractor but also minimize the distance traveled, thus reducing urban traffic emissions.
44
Vischer, William. "Low-Volume Road Flexible Pavement Design with Geogrid-Reinforced Base." Transportation Research Record: Journal of the Transportation Research Board 1819, no. 1 (January 2003): 247–54. http://dx.doi.org/10.3141/1819a-36.
Full textAbstract:
Reconstruction of a U.S. Department of Agriculture Forest Service campground facility in the North Dakota National Grasslands required redesign and substantial construction change because of an unstable clay subgrade. The original proposal provided for removing the old asphalt and adding additional base and a new asphalt surface. When the asphalt cement was removed, it was found that the base course had migrated into the clay subgrade, leaving the subgrade unstable. Options explored for redesign were thickened gravel base sections, lime stabilization, and geosynthetic reinforcement. The geogrid-reinforced base was selected. Design analysis consisted of two phases: ( a) bearing capacity analysis for construction traffic and ( b) flexible pavement analysis and design to support long-term recreation traffic. The first involved primarily Tensar design methods; the second, an empirical and mechanistic approach. Empirical methods, based on 1993 AASHTO design procedures, included Tensar methods and the recent Perkins–Michigan Department of Transportation model. The mechanistic approach used the EVERSTRESS and KENLAYER elastic layered programs. All design methods used were found beneficial and are recommended. The final flexible pavement sections constructed were dictated by the construction traffic and consisted of 2 in. of asphalt concrete on a reinforced base course ranging in thickness from 4 to 12 in. The project had to be completed in 3 weeks, so investigation and testing were limited, and the design parameters were based primarily on field dynamic cone penetrometer testing and correlations. Enforcement of the limited wheel loads became a continuous inspection problem. In addition, because of the fineness of the base aggregate produced, a separation geotextile had to be added to preclude migration of the base aggregate through the geogrid into the subgrade.
45
Al-Sharif, Lutfi, Ghazi Al Sukkar, Asma' Hakouz, and Nama' A. Al-Shamayleh. "Rule-based calculation and simulation design of elevator traffic systems for high-rise office buildings." Building Services Engineering Research and Technology 38, no. 5 (April 20, 2017): 536–62. http://dx.doi.org/10.1177/0143624417705070.
Full textAbstract:
Elevator traffic system design has been traditionally based on rules of thumb and the designer’s judgement and expertise. This is especially true for high-rise buildings. This paper attempts to develop a systematic methodology for the design of high-rise buildings, by the use of rational rules. In order to ensure clarity and consistency, it defines the terms sector, zone and stack. A sector is a group of floors that are served by one or more elevators in a journey and are not necessarily fixed and are not necessarily contiguous. A zone is a group of contiguous floors that are served by a group of elevators and are fixed in hardware. When a number of zones are grouped together they form a stack, which is effectively a building within a larger building that is served by a main lobby or by a sky lobby. The systematic methodology is built around the use of rational rules. Rational rules differ from rules of thumbs in a number of ways, and these are discussed in the paper. Six rational rules are presented and used in the design of high-rise buildings. The rules are triggered by the checking of a number of design parameters such as the waiting time and the transit time, as well as the core area used up and the number of elevators in the group. A simulator for incoming traffic and a single entrance is used in order to obtain the parameters for a design and then to trigger the rational rules. Five case studies on the design of various buildings are presented in order to illustrate the use of the six rules. In addition, feedback from the industry experts is reviewed in a dedicated section. Practical application: This paper presents a set of six rules for the design of elevator traffic systems for high-rise buildings. Armed with calculation and simulation tools, the designer can follow the six rules in a systematic procedure in order to arrive at a compliant elevator traffic design for high-rise buildings.
46
Hong, Weiqi, Zishu Yang, Xu Sun, Jianyu Wang, and Pengpeng Jiao. "Temporary Reversible Lane Design Based on Bi-Level Programming Model during the Winter Olympic Games." Sustainability 14, no. 8 (April 15, 2022): 4780. http://dx.doi.org/10.3390/su14084780.
Full textAbstract:
When the Winter Olympic Games were held, several roads were divided into exclusive lanes for the Winter Olympics to ensure the smooth passage of Winter Olympic vehicles. This reduced the number of lanes available for private vehicles, which caused a temporary tidal traffic phenomenon that led to traffic congestion and increased exhaust emissions. Temporary reversible lanes were added to the object lane to alleviate the temporary tide traffic phenomenon. A bi-level programming model was developed based on the principle of the minimum construction cost and the minimum total travel time of the road network. Meanwhile, three heuristics algorithms were used to solve the problem. The results show that the reasonable addition of temporary reversible lanes during the Olympic Games can reduce the total system travel cost, solve the temporary tidal traffic phenomenon, and alleviate traffic congestion.
47
Alina Gennadievna, Loktionova, and Shevtsova Anastasia Gennadievna. "ESTIMATION OF TECHNICAL PARAMETERS OF CARS IN THE TRAFFIC FLOW." World of transport and technological machines 2(79), no. 4 (2022): 75–80. http://dx.doi.org/10.33979/2073-7432-2022-2(79)-4-75-80.
Full text
48
Mikryukov, K. S. "Features of Methods for Assessing the Long-Term Traffic Intensity in the Design of Toll Roads." World of Transport and Transportation 19, no. 6 (July 23, 2022): 62–67. http://dx.doi.org/10.30932/1992-3252-2021-19-6-8.
Full textAbstract:
Long-term traffic intensity is among core characteristics that determine main parameters while developing projects for construction of new highways. The long-term traffic intensity influences estimated speed, pavement design, total number of traffic lanes, width of traffic lanes and roadsides, longitudinal slope, radii of horizontal curve, transverse slope, radii of convex and concave curves regarding the longitudinal profile, width of median strip, layout of intersection or junction with other roads.Existing methods for predicting traffic intensity for toll roads are also deterministic and cannot estimate the range of values for the listed indicators. In this regard, the objective of the study is to identify the features, advantages, and disadvantages of existing methods for assessing the long-term traffic intensity for toll roads.The study considered both traditional, classical methods (extrapolation, historical analysis, approximation) and promising innovative approaches based on the theory of fuzzy logic and neural network modelling.
49
Jaroslav, Hauser, Ševelová Lenka, Matula Radek, and Zedník Petr. "Optimization of low volume road pavement design and construction." Journal of Forest Science 64, No. 2 (February 28, 2018): 74–85. http://dx.doi.org/10.17221/109/2017-jfs.
Full textAbstract:
Low volume roads in the Czech Republic are roads with lower traffic volume that primarily include forest and field roads, and they are an integral part of the Czech transport network. When building road pavements, we can use processes for surveying, designing, building and inspecting road constructions included in national and international, particularly European, standards. In addition, the roads are evaluated in terms of their environmental impacts, in order to maintain the quality of the environment. However, during the construction of road pavements decisions based on financial, time and other reasons are made. The decisions have impacts on the operation of roads and lead to other measures and additional costs of repairs and reconstructions. The article summarizes the authors’ research results from constructions of low volume road pavements and contains evaluations of laboratory and in situ material tests (soils, layers) of installed road pavements as well as evaluations of modelled laboratory and long-term monitored in situ structures.
50
Wang, Kai, Peng Wang, Xin Chen, and Lu-Ting Zhao. "Multiobjective Optimization Design of Toll Plaza." Mathematical Problems in Engineering 2020 (October 27, 2020): 1–9. http://dx.doi.org/10.1155/2020/2324894.
Full textAbstract:
This paper mainly studies the optimization design of toll plaza, including the determination of the number of tollbooths and the design of the shape and size of the toll plaza. The optimization objectives are the construction cost of toll plaza, the throughput, and the accident rate. Through the analysis on the structure of toll plaza and the traffic flow, we determine the impact factors for optimization targets and select the number of tollbooths, the length of entrance and exit queue area, and the ingress and egress angles as decision variables and then build the function relationship between construction cost, accident rate, throughput, and decision variables. Then based on those functions to build the mathematical programming model, so as to get the optimal design plan.