Relevant bibliographies by topics / Heavy vehicles

Academic literature on the topic 'Heavy vehicles'

Author: Grafiati
Published: 4 June 2021
Last updated: 26 January 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Heavy vehicles.'

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.

Journal articles on the topic "Heavy vehicles"

1

Han, Junyan, Xiaoyuan Wang, Huili Shi, Bin Wang, Gang Wang, Longfei Chen, and Quanzheng Wang. "Research on the Impacts of Vehicle Type on Car-Following Behavior, Fuel Consumption and Exhaust Emission in the V2X Environment." Sustainability 14, no. 22 (November 16, 2022): 15231. http://dx.doi.org/10.3390/su142215231.

Full text
Abstract:
The type of vehicles in realistic traffic systems are not homogeneous. Impacts of the preceding vehicle’s type on the car-following behavior, fuel consumption and exhaust emissions are still unclear. This paper presents a study on the impacts of two types of preceding vehicles, heavy vehicles and new energy vehicles, on car-following behavior, traffic flow characteristics, fuel consumption and exhaust emissions. Firstly, an extended car-following model was proposed by incorporating the influence of the preceding vehicle’s type. Secondly, impacts of the preceding vehicle’s type on platoon stability were analyzed by applying linear stability theory. Finally, numerical simulations were carried out to analyze impacts of the preceding vehicles’ type on the characteristics of the car-following platoon, traffic flow operation, and vehicle’s fuel consumption and exhaust emissions. The results reveal that, compared with the normal preceding vehicle, there are negative impacts of the heavy and new-energy preceding vehicles on the platoon stability, traffic flow operation, and vehicle’s fuel consumption and exhaust emissions, and these impacts are related to the corresponding sensitivity parameters and the penetration percentages of the two types of preceding vehicle. The research results of this paper can provide a reference for understanding car-following behavior and traffic-flow characteristics affected by the type of preceding vehicles in the V2X environment.
APA, Harvard, Vancouver, ISO, and other styles
2

Carrigan, Christine E., and Malcolm H. Ray. "Proposed Heavy Vehicle Encroachment Adjustment Factor." Transportation Research Record: Journal of the Transportation Research Board 2521, no. 1 (January 2015): 103–10. http://dx.doi.org/10.3141/2521-11.

Full text
Abstract:
Encroachment probability models such as the Roadside Safety Analysis Program (RSAP) have traditionally assumed that heavy vehicles and passenger vehicles share the same encroachment characteristics. This assumption was reviewed in developing bridge railing selection guidelines in NCHRP 22-12(03), where an examination of a specific highway and a national sample of data indicated that trucks encroached at a different rate than passenger vehicles. This paper describes the development of a new vehicle-type encroachment adjustment factor (EAF). The results confirmed previous findings, but this analysis controlled for traffic volumes, highway type, percentage of heavy vehicles [i.e., percentage of trucks (PT)], and segment length. The result was a more robust model that was valid over a wider range of average annual daily traffic and PTs. The large data set included 635,464 segments of data from the states of Ohio and Washington. The proposed EAF was recommended for inclusion in RSAPv3. Ideally, encroachment data would be collected for heavy vehicles to determine the frequency of heavy vehicles encroaching onto the roadside and the trajectories heavy vehicles took during encroachment, but this process proved to be financially challenging. The study used crash data to carry out a comprehensive analysis of traffic volume, heavy vehicle mix, highway type, and segment length. A vehicle-type EAF was developed for divided and undivided roadways. The results provided some indication of how best to incorporate heavy vehicles in the encroachment probability model used in RSAP.
APA, Harvard, Vancouver, ISO, and other styles
3

Wang, Rui, Hao Zhang, Xian Sheng Li, Xue Lian Zheng, and Yuan Yuan Ren. "Consider Roll of Heavy Vehicle's Modeling Research." Applied Mechanics and Materials 404 (September 2013): 250–56. http://dx.doi.org/10.4028/www.scientific.net/amm.404.250.

Full text
Abstract:
Existed consider roll of heavy vehicle's dynamics model have defects and deficiencies. Vehicles lateral-load transfer that will lead to vehicles rollover is not considered; the whole vehicles dynamics model neglect unspring masss roll angle while the unspring masss independent force analysis considered the roll angel, the establishment of the model is not consistent in; the model dont have a united positive direction rule for all the variables. Because of all of these defects the model cant rightly reflect vehicles motion status. This paper takes lateral-load transfer as a dynamic variable; unspring masss roll angle is considered when establishing the whole vehicles dynamics model; all variables positive direction is united. Reasonable, right, applied to evaluate vehicle's rollover stability and quite newly model is established.
APA, Harvard, Vancouver, ISO, and other styles
4

Späth, M., V. Verdino, M. Umierski, and K. Philibert-Palmer. "Heavy Duty Vehicles." Sonderprojekte ATZ/MTZ 24, S1 (August 2019): 46. http://dx.doi.org/10.1007/s41491-019-0027-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Bowers-Carnahan, F. Renae, Rhonda Kinghorn, Alvah Bittner, Syd Reynolds, Anne-Marie Feyer, Ann M. Williamson, and Deborah M. Freund. "Issues in Heavy Vehicles." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 37, no. 9 (October 1993): 579. http://dx.doi.org/10.1177/154193129303700913.

Full text
Abstract:
The heavy vehicle industry includes medium-duty trucks, heavy-duty trucks, and buses. Vehicle size, driver location relative to the road, and duration of time in the vehicle distinguish heavy vehicles from the passenger car and light truck industry. During the past decade, the industry has been changing. Technological advances, as well as political, economic, and cultural forces, have combined to create a new environment. The driver has become more important in this new environment. A driver shortage and safety issues have heightened the interest in human factors and ergonomics in the heavy vehicle industry. The purpose of this symposium is to highlight some of the current human factors research in the field of heavy vehicles. While there are many possible topics to discuss, the first two papers will address vehicle design issues and the second two papers will address operational issues. Ms. Kinghorn will discuss a technique to estimate the current population of US Truck Drivers. She proposes that some of the shortcomings of the available data, such as changes in the population over the last decade and dimensions for which no data are available, can be overcome by estimating the current truck driver population from data on the general population. Mr. Reynolds will discuss the discrepancies observed between a design eyellipse location and actual driver eye locations in a small exploratory study. He will describe the primary contributor to the discrepancy, the H-point, and suggest several other potential contributors. Ms. Feyer will discuss a study on the effects of operational practices on driver fatigue. She will compare and contrast the operational practices of various segments of the long distance passenger and freight hauling industries. Her results indicate that different strategies must be applied to the passenger and freight industries to combat fatigue, even though the causes of fatigue are the same. Ms. Freund is from the US Federal Highway Administration's Office of Motor Carriers. She will discuss their plans for research concerning truck and bus driver operational regulation. Specific areas that are of interest include proficiency testing, fitness for duty, and substance abuse. She will elaborate on the program, addressing driver fatigue and loss of alertness.
APA, Harvard, Vancouver, ISO, and other styles
6

Ikhsan, Nurzaki, Ahmad Saifizul, and Rahizar Ramli. "The Effect of Vehicle and Road Conditions on Rollover of Commercial Heavy Vehicles during Cornering: A Simulation Approach." Sustainability 13, no. 11 (June 3, 2021): 6337. http://dx.doi.org/10.3390/su13116337.

Full text
Abstract:
Heavy vehicles make up a relatively small percentage of traffic volume on Malaysian roads compared to other vehicle types. However, heavy vehicles have been reported to be involved in 30,000–40,000 accidents yearly and caused significantly more fatalities. Rollover accidents may also incur cargo damages and cause environmental or human disasters for vehicles that carry hazardous cargos if these contents are spilled. Thus, in this paper, a comprehensive study was conducted to investigate the effects of vehicle and road conditions on rollover of commercial heavy vehicles during cornering at curved road sections. Vehicle conditions include the heavy vehicle class (based on the axle number and vehicle type), speed and gross vehicle weight, while road conditions include the cornering radius and coefficient of friction values. In order to reduce the risks involved in usage of actual heavy vehicles in crash experiments, a simulation approach using a multi-body vehicle dynamic software was applied in this study, where the verified virtual heavy vehicle model was simulated and the output results were extracted and analyzed. The results showed that a maximum of 40% and a minimum of 23% from the total number of simulations resulted in an unsafe condition (indicated as failed) during the simulations. From the unsafe conditions, two types of rollover accidents could be identified, which were un-tripped and tripped rollovers. The heavy vehicle speed was also found to have a strong correlation to the lateral acceleration (to cause a rollover), followed by gross vehicle weight, coefficient of friction and cornering radius, respectively.
APA, Harvard, Vancouver, ISO, and other styles
7

Roh, Chang-Gyun, Hyeonmyeong Jeon, and Bongsoo Son. "Do Heavy Vehicles Always Have a Negative Effect on Traffic Flow?" Applied Sciences 11, no. 12 (June 15, 2021): 5520. http://dx.doi.org/10.3390/app11125520.

Full text
Abstract:
The purpose of this study is to analyze the effect of heavy vehicles on traffic flow on a two-lane highway. To achieve this goal, data was obtained from piezosensors on the Seoul–Chuncheon Expressway. Analysis of the data showed that, as everyone knows, the average speed of traffic flows decreases as the proportion of heavy vehicles increases. However, not only the speed decreased, but the speed deviation between vehicles decreased. In other words, it was found that within the traffic group that formed the same platoon, individual vehicles were forced to form similar speeds, resulting in a homogeneous rate. This means that heavy vehicles can be included in the traffic stream, reducing the chances of a vehicle-to-vehicle conflict. This kind of influence can be said to explain that heavy vehicles do not necessarily have a negative effect on traffic flow. In this way, we expect to be able to study ways to manage traffic flow by using the effects of low-speed vehicles.
APA, Harvard, Vancouver, ISO, and other styles
8

Sadeghi Kati, Maliheh, Jonas Fredriksson, Bengt Jacobson, and Leo Laine. "Gain-scheduled H∞ controller synthesis for actively steered longer and heavier commercial vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 7 (August 30, 2019): 2045–65. http://dx.doi.org/10.1177/0954407019870352.

Full text
Abstract:
This paper proposes a gain-scheduled controller synthesis for improving the lateral performance and stability of articulated heavy vehicles by active steering of the selected towed vehicle units. The longitudinal velocity is on-line measurable, and it is thus treated as a scheduling parameter in the gain-scheduled controller synthesis. The lateral performance of four articulated heavy vehicles, including existing Nordic heavy vehicles and prospective longer articulated heavy vehicles, are investigated with and without active steering and compared with a commonly used conventional tractor–semitrailer. The control problem is formulated as an [Formula: see text] static output feedback, which uses only information from articulation angles between the steered vehicle unit and the vehicle unit in front of it. The solution of the problem is obtained within the linear matrix inequality framework, while guaranteeing [Formula: see text] performance objectives. Effectiveness of the designed controller is verified through numerical simulations performed on high-fidelity vehicle models. The results confirm a significant reduction in yaw rate rearward amplification, lateral acceleration rearward amplification, and high-speed transient off-tracking, thereby improving the lateral stability and performance of all studied heavy vehicles at high speeds.
APA, Harvard, Vancouver, ISO, and other styles
9

Cole, D. J., and D. Cebon. "Spatial Repeatability of Dynamic Tyre Forces Generated by Heavy Vehicles." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 206, no. 1 (January 1992): 17–27. http://dx.doi.org/10.1243/pime_proc_1992_206_157_02.

Full text
Abstract:
Road damage due to heavy vehicles is thought to be dependent on the extent to which lorries in normal traffic apply peak forces to the same locations along the road. A validated vehicle simulation is used to simulate 37 leaf-sprung articulated vehicles with parametric variations typical of vehicles in one weight class in the highway vehicle fleet. The spatial distribution of tyre forces generated by each vehicle is compared with the distribution generated by a reference vehicle, and the conditions are established for which repeated heavy loading occurs at specific points along the road. It is estimated that approximately two-thirds of vehicles in this class (a large proportion of all heavy vehicles) may contribute to a repeated pattern of road loading. It is concluded that dynamic tyre forces are a significant factor influencing road damage, compared to other factors such as tyre configuration and axle spacing.
APA, Harvard, Vancouver, ISO, and other styles
10

Zhao, Peibo, and Chris Lee. "Analysis and Validation of Surrogate Safety Measures by Types of Lead and Following Vehicles." Transportation Research Record: Journal of the Transportation Research Board 2659, no. 1 (January 2017): 137–47. http://dx.doi.org/10.3141/2659-15.

Full text
Abstract:
This study analyzed rear-end collision risk in a mixed traffic flow of cars and heavy vehicles on a freeway using two surrogate safety measures: time to collision (TTC) and postencroachment time (PET). The study estimated surrogate safety measures for types of lead and following vehicles (car or heavy vehicle) by using the individual vehicle trajectory data. The vehicle trajectory data were collected from a segment of the US-101 freeway in Los Angeles, California. It was found that the distributions of TTC and PET were significantly different between types of lead and following vehicles. Also, the mean values of TTC and PET were higher for heavy vehicles following cars than for cars following cars and for cars following heavy vehicles. The study also validated TTC by using the simulated traffic data for a few minutes before the time of crashes that occurred on a section of the Gardiner Expressway in Toronto, Ontario, Canada. It was found that TTC reflects higher collision risk in the time intervals closer to the crash time and it reflects higher collision risk for the crash case than for the noncrash case. The findings suggest that the difference in rear-end collision risk between types of vehicle pairs should be considered in safety assessment of mixed traffic flow of cars and heavy vehicles.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Heavy vehicles"

1

Felixson, Henrik. "Vehicle Ahead Property Estimation in Heavy Duty Vehicles." Thesis, Linköpings universitet, Reglerteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108341.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rombach, Markus. "Vehicle Speed Estimation for Articulated Heavy-Duty Vehicles." Thesis, Linköpings universitet, Reglerteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-152428.

Full text
Abstract:
Common trends in the vehicle industry are semiautonomous functions and autonomous solutions. This new type of functionality sets high requirements on the knowledge about the state of the vehicle. A precise vehicle speed is important for many functions, and one example is the positioning system which often is reliant on an accurate speed estimation. This thesis investigates how an IMU (Inertial Measurement Unit), consisting of a gyroscope and an accelerometer, can support the vehicle speed estimation from wheel speed sensors. The IMU was for this purpose mounted on a wheelloader. To investigate the speed estimation EKFs (Extended Kalman Filters) with different vehicle and sensor models are implemented. Furthermore all filters are extended to Kalman smoothers. First an analysis of the sensors was performed. The EKFs were then developed and verified using a simulation model developed by Volvo Construction Equipment. The filters were also implemented on the wheel loader and tested on data collected from real world scenarios.
APA, Harvard, Vancouver, ISO, and other styles
3

Iqbal, Ammar Tanange Rakesh Virk Shafqat. "Vehicle fault prediction analysis : a health prediction tool for heavy vehicles /." Göteborg : IT-universitetet, Chalmers tekniska högskola och Göteborgs universitet, 2006. http://www.ituniv.se/w/index.php?option=com_itu_thesis&Itemid=319.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gustafsson, Tobias. "In-Vehicle Execution Environment for Diagnostic Scripts on Heavy Commercial Vehicles." Thesis, KTH, Maskinkonstruktion (Inst.), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192155.

Full text
Abstract:
Today the importance and complexity of vehicle diagnostics are increasing and more systems uses remote diagnostics. Remote diagnostics involves an off-board server that uses a wireless connection to access the diagnostic services inside a vehicle on a remote location. Problems occur because of the remote connections limitations in speed and reliability. This can be solved by executing tasks on an Electrical Control Unit (ECU) inside the vehicle. However, implementing new software in an ECU is time consuming and expensive. An in-vehicle execution environment for diagnostic scripts can make it possible to send these tasks from the off-board systems and execute them on-board the vehicle. This thesis investigates that possibility. A set of requirements for an in-vehicle execution environment are identified together with important decisions that affects them. Restricting the diagnostic services to only passive scripts reduces the requirements. Using a higher abstraction level in the scripts to send diagnostic commands makes it easier to develop scripts, but requires more software to be implemented on the ECU. The choice of script engine is also important and a survey and evaluation of different script engines is performed. Python, Lua, mRuby and ChaiScript are compared and Lua is selected for an implementation used in a case study where the results are validated. This case study shows that the requirements are sufficient to create an in-vehicle execution environment that can execute advanced diagnostic tasks. An in-vehicle script executes more than eight times faster than the same task on the off-board system and decreases the amount of data in the remote communication. Development of a script is more than 20 times faster compared to the development of ECU system software. Before this in-vehicle execution environment can be used on a population of vehicles, investigations needs to be done regarding the requirements for the off- board systems and how the development and usage of scripts should be organized.
Idag ökar vikten och komplexiteten hos fordonsdiagnostik och fler system använder fjärrdiagnostik. Fjärrdiagnostik innebär att en server använder en trådlös anslutning för att komma åt de diagnostiska tjänsterna i ett fordon på en avlägsen plats. Problem uppstår på grund av begränsningar i hastighet och tillförlitlighet hos fjärranslutningarna. Detta kan lösas genom att köra uppgifter i fordonet. Men att göra ny programvara i ett fordon är tidskrävande och dyrt. En exekveringsmiljö för diagnostiska skript kan göra det möjligt att skicka dessa uppgifter från de externa systemen och köra dem ombord på fordonet. I den här avhandling undersöks denna möjlighet. En uppsättning krav för en exekveringsmiljö för diagnostiska skript har identi- fieras. Att begränsa de diagnostiska tjänsterna till endast passiva skript minskar kraven. Med hjälp av en högre abstraktionsnivå för att skicka diagnostiska kommandon blir det lättare att utveckla skript, men detta kräver att mer programvara är implementerad i fordonet. Valet av skriptmotorn är också viktigt och en undersökning och utvärdering av olika skriptmotorer har utförs. Python, Lua, mRuby och ChaiScript har jämförts och Lua valts för en implementering som används i en fallstudie där resultaten har validerats. Denna fallstudie visar att kraven är tillräckliga för att skapa en exekveringsmiljö som kan utföra avancerade diagnostiska uppgifter. Ett skript som körs i fordonet körs mer än åtta gånger snabbare än samma uppgift på som körs på de externa systemet och minskar också mängden data i fjärrkommunikationen. Utveckling av ett skript är mer än 20 gånger snabbare jämfört med utvecklingen av systemprogramvaran i fordonet. Innan en exekveringsmiljö kan användas på en population av fordon måste undersökningar göras om kraven för de externa system som ska hantera skripten och hur utvecklingen och användningen av skript ska organiseras.
APA, Harvard, Vancouver, ISO, and other styles
5

Möller, Anders. "Software Component Technologies for Heavy Vehicles." Licentiate thesis, Mälardalen University, Department of Computer Science and Electronics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-34.

Full text
Abstract:

Control-systems for heavy vehicles have advanced from an area where Industrial Requirements on Component Technologies for Embedded Systemsmainly mechanic and hydraulic solutions were used, to a highly computerised domain using distributed embedded real-time computer systems. To cope with the increasing level of end-customer demands on advanced features and functions in future vehicle systems, sophisticated development techniques are needed. The development techniques must support software in numerous configurations and facilitate development of systems with requirements on advanced functionality, timeliness, and safety-criticality. In order to meet these requirements, we propose the use of component-based software engineering. However, the software component-technologies available on the market have not yet been generally accepted by the vehicular industry. In order to better understand why this is the case, we have conduced a survey - identifying the industrial requirements that are deemed decisive for introducing a component technology. We have used these requirements to evaluate a number of existing component technologies, and one of our conclusions is that none of the studied technologies is a perfect match for the industrial requirements. In addition, we have implemented and evaluated the novel component model SaveCCM, which has been designed for safety-critical automotive applications. Our evaluation indicates that SaveCCM is a promising technology which has the potential to fulfil the industrial requirements. However, tools are still immature and incomplete. In the final part of this work, we propose the use of monitored software components, as a general approach for engineering of embedded systems. In our approach, a component's execution is continuously monitored and experience regarding the behaviour is accumulated. As more and more experience is collected the confidence in the component grows.

APA, Harvard, Vancouver, ISO, and other styles
6

Hellström, Erik. "Look-ahead Control of Heavy Vehicles." Doctoral thesis, Linköpings universitet, Fordonssystem, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-54922.

Full text
Abstract:
Trucks are responsible for the major part of inland freight and so, they are a backbone of the modern economy but they are also a large consumer of energy. In this context, a dominating vehicle is a truck with heavy load on a long trip. The aim with look-ahead control is to reduce the energy consumption of heavy vehicles by utilizing information about future conditions focusing on the road topography ahead of the vehicle. The possible gains with look-ahead control are evaluated by performing experiments with a truck on highway. A real-time control system based on receding horizon control (RHC) is set up where the optimization problem is solved repeatedly on-line for a certain horizon ahead of the vehicle. The experimental results show that significant reductions of the fuel consumption are achieved, and that the controller structure, where the algorithm calculates set points fed to lower level controllers, has satisfactory robustness to perform well on-board in a real environment. Moreover, the controller behavior has the preferred property of being intuitive, and the behavior is perceived as comfortable and natural by participating drivers and passengers. A well-behaved and efficient algorithm is developed, based on dynamic programing, for the mixed-integer nonlinear minimum-fuel problem. A modeling framework is formulated where special attention is given to properly include gear shifting with physical models. Fuel equivalents are used to reformulate the problem into a tractable form and to construct a residual cost enabling the use of a shorter horizon ahead of the vehicle. Analysis of errors due to discretization of the continuous dynamics and due to interpolation shows that an energy formulation is beneficial for reducing both error sources. The result is an algorithm giving accurate solutions with low computational effort for use in an on-board controller for a fuel-optimal velocity profile and gear selection. The prevailing approach for the look-ahead problem is RHC where main topics are the approximation of the residual cost and the choice of the horizon length. These two topics are given a thorough investigation independent of the method of solving the optimal control problem in each time step. The basis for the fuel equivalents and the residual cost is formed from physical intuition as well as mathematical interpretations in terms of the Lagrange multipliers used in optimization theory. Measures for suboptimality are introduced that enables choosing horizon length with the appropriate compromise between fuel consumption and trip time. Control of a hybrid electric powertrain is put in the framework together with control of velocity and gear. For an efficient solution of the minimum-fuel problem in this case, more fuel equivalence factors and an energy formulation are employed. An application is demonstrated in a design study where it is shown how the optimal trade-off between size and capacity of the electrical system depends on road characteristics, and also that a modestly sized electrical system achieves most of the gain. The contributions develop algorithms, create associated design tools, and carry out experiments. Altogether, a feasible framework is achieved that pave the way for on-board fuel-optimal look-ahead control.
APA, Harvard, Vancouver, ISO, and other styles
7

Kitching, Kevin John. "Semi-active damping of heavy vehicles." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/265419.

Full text
Abstract:
This thesis is concerned with the use of semi-active suspensions in heavy vehicles to improve ride and reduce road damage. An introduction into the subject is given in chapter 1 and a review of the relevant literature is presented at the beginning of each main chapter. The development and modelling of a prototype, continuously variable semi-active damper for heavy vehicles is described in chapter 2. A proportional valve is used to generate the variable damping coefficient and the detrimental effects of the oil flow forces acting on the valve spool are studied. The force tracking performance of the damper is then examined for simple input conditions and the compliance of the hydraulic fluid is found to have a strong influence upon the response of the damper. The different vehicle and road models used in the thesis are described in chapter 3. In chapter 4, the performance of the prototype damper is investigated under realistic operating condition using a Hardware-in-the-Loop (HiL) test rig, with a single wheel station vehicle model. The prototype damper displays a phase lag of approximately 20ms between the demanded and achieved damping force. The semi-active suspension is found to be most effective in reducing the body accelerations relative to an optimum non-linear passive suspension. A theoretical investigation into the reduction of road damage through the use of active and semi-active suspensions is described in chapter 5. The relative performance of four linear state feedback control strategies is examined. The potential for reducing road damage by using a controller which directly regulates various measures of road damage is also studied. Significant improvements are predicted for the three controllers which assume the road inputs to the vehicle are correlated. However, these benefits are shown to diminish as the vehicle speed is reduced. It is concluded that the control of the dynamic tyre forces is an effective means by which to regulate road damage. Theoretical predictions of the benefits from wheelbase preview control are measured experimentally in chapter 6, using the prototype semi-active damper in a half-car HiL rig with a planar two axled heavy vehicle model. The benefits of preview control using the prototype semi-active damper are found to be less than theoretically possible due to the phase lag between the demanded and achieved damping force of the prototype damper. The final section of chapter 6 shows that the performance of the prototype damper can be improved further by having a theoretical simulation running ahead of the HiL vehicle. The theoretical simulation is used to predict the demanded damper force for the HiL vehicle and thereby compensate for the phase lag in the prototype damper. Conclusions and recommendations for further work are presented in chapter 7.
APA, Harvard, Vancouver, ISO, and other styles
8

Garcia, Hector, and Emma Smith. "Wheel Induced Vibrations on Heavy Vehicles." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-153927.

Full text
Abstract:
Some of the most significant comfort disturbances in heavy vehicles can often be related to the wheels. In those cases, the vibration of the vehicle is excited by for example force variations within the tire, ovality of the tire or imbalance in the wheel. The disturbances are dependent on vehicle speed and are often perceived as most unpleasant at cruising speed on a motorway, at around 90 km/h. Truck manufacturers want to increase the robustness against this type of disturbance, since this results in an improved operator comfort. But it also makes it possible to lower the requirements on the suppliers of tires and rims, and thereby there is a financial gain for both customer and manufacturer. The aim with this project is to increase the understanding of wheel induced vibrations. In order to achieve this a literature survey has been performed on the subject. Furthermore, the phenomenon has been studied analytically by using a quarter car model which includes a brush tire model. The model is scripted in MATLAB. Simulations have been performed to analyse the effect on the chassis when forces excited by mass imbalance and radial run out are introduced. When looking at the second harmonic radial run out imperfection the unsprung mass, i.e the wheel, starts to bounce during the settling time. Also when comparing two different weights of a mass imbalance the power increase of the vibration in the sprung mass is much larger than the power increase of the unsprung mass at the specific frequency. This implies that the excitation frequency, the wheel rotation frequency in this case, is a harmonic repetition of the sprung mass undamped natural frequency. To avoid this phenomenon the undamped natural frequency of the sprung mass must change either by adding a damper or by changing the weight or the spring stiffness. The simulation is run with a damper although without it the power increase would be much larger.
APA, Harvard, Vancouver, ISO, and other styles
9

Ohlsén, Rikard, and Erik Sten. "Optimal Platooning of Heavy-Duty Vehicles." Thesis, Linköpings universitet, Fordonssystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149599.

Full text
Abstract:
The vehicle and transport industry have a constant strive towards reduced fuelconsumption  and  for  HDVs  are  there  numerous  of  different  approaches.   Twoapproaches that have been proven to reduce fuel consumption in previous workare look-ahead control (LAC) and platooning. LAC uses knowledge about the fu-ture road topography to optimize the vehicles velocity. Platooning is when HDVsdrive relatively close to each other in order to reduce air drag.  Platooning vehi-cles can also optimize their velocity based on the preceding vehicles trajectory,known as adaptive look-ahead control (ALAC).Utilizing LAC/ALAC can enable a pulse-and-glide (PnG) strategy, where thevehicle engages neutral gear and freewheels e.g. in a downhill. Thereby reducesthe fuel consumption.  So, the main purpose of this thesis was to study how pla-tooning vehicles and the control strategy known as pulse-and-glide (PnG) inter-act when pursuing lower fuel consumption.  Therefore, a vehicle model, a pla-toon model and optimization-based controllers (LAC/ALAC) were designed anddeveloped.   For the optimization-based controllers was dynamic programming(DP) chosen as optimization solver.The results shows that the combination of these approaches has a great poten-tial to enable substantial fuel reduction, both for individual vehicles and for theentire platoon.  The most suitable strategy, in terms of fuel consumption, for theplatoon as a whole is closely related to the one for individual vehicles. The strate-gies resulting in the largest fuel reduction for a single vehicle does also give thelargest total fuel reduction for the platoon as a whole.  According to the results,a lead vehicle should utilize both LAC and PnG. The other platooning vehiclesshould  employ  ALAC  in  order  to  also  utilize  PnG  meanwhile  keeping  a  shortintermediate distance.According to the results the greatest potential fuel reduction is achieved forthe downhill segment. For the last vehicle in the platoon it is as high as 42 %, com-pared to the nominal case (a single vehicle using conventional cruise control andnot shifting gears). The potential fuel reduction for the flat and uphill segmentsare similar to each other, 22 % and 20 % respectively. For all three segments PnGaccounts for roughly 1-3 percentage points of the entire platoons fuel reduction.In reality the road topography is constantly varying, so it is also promising thatthe fuel efficiency is improved for all types of road segments

Dubbelklassat examensarbete, elektroteknik och maskinteknik

APA, Harvard, Vancouver, ISO, and other styles
10

Hård, Patrik. "Heavy vehicles: Load variation and scatter." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279493.

Full text
Abstract:
This master thesis studies accelerations recorded and stored onboard Scania trucks. From these accelerations, a general load (𝐹 = 𝑚 ∗ 𝑎) description is deduced. In the next step, an abstract number, ‘pseudo-damage’, representing the load’s fatigue damage potential is calculated. Method At workshop visits, data stored on-board is ‘read out’ and stored in a database. Read-outs from Scania test vehicles are used to study how accumulated pseudo-damage evolves with mileage and test cycles. Pseudo-damage intensity (damage per km or test cycle) variation in carefully controlled vehicle operation, i.e. test track vehicle testing, suggests a threshold between random scatter and variation caused by describable load-influencing factors (vehicle specification, road quality, etc). Influence of wheel configuration – two or three axles – on accelerations and pseudo-damage is studied as an example of vehicle specification influence. Result Test track operation produces considerably higher pseudo-damage intensities than operation on public roads. A ‘normal’ pseudo-damage distribution is shown on title page. But when the vehicle’s operation is split in two distinctly different modes, the distribution displays two peaks instead. RSD, relative standard deviation of pseudo-damage intensity, is used to quantify scatter and variation. Available data indicates that RSD below 0,3 can be regarded as purely random scatter. RSD values above this threshold suggests that traceable, maybe intentional, variation of loadinfluencing factors is present. A pilot study of axle configuration’s influence on loads (pseudo-damage calculated from acceleration matrices) produces inconclusive results, the available database (number of trucks) is too small. Conclusions and recommendations On-board storage of acceleration data provides a general ‘fatigue load’ indication. Resolution is sufficient for meaningful load variation studies. Regular, closer-spaced read-outs would facilitate more detailed studies of test vehicles’ operation.
Mastersarbetet studerar accelerationer, uppmätta och lagrade hos Scanias fordon. Från dessa accelerationer är begreppet ‘pseudo-skada’ beräknat. Pseudo-skada representerar en lasts utmattnings skada potential. Metod Vid verkstadsbesök sparas den data som finns lagrad ombord på lastbilen till en databas. Med utläsningar från testfordonen studeras hur den ackumulerade pseudo-skadan beror på miltal och antal körda test cykler. Genom analys utav variationen i pseudo-skada intensitet (skada per km eller test cykel) från en välkontrollerad fordonsdrift, exempelvis test utförda på test banan, fås ett tröskelvärde mellan slumpmässiga variationer och variationer som beror på förklarliga belastningspåverkande faktorer (fordon specifikation, väg kvalité, etc.) Som ett exempel på influens från olika fordon specifikationer, studeras beroendet mellan pseudoskada och hjulkonfiguration. Fordon med antingen två eller tre hjulaxlar är studerade. Resultat Vid framförande av fordon på testbanan genereras högre pseudo-skada intensitet än när fordonet framförs på allmänna vägar. Figuren på titelsidan visar den normala fördelningen utav pseudo-skada. När fordonsdriften är uppdelad i två distinkta körsätt visar istället fördelningen upp två stycken pikar. Relativ standard avvikelse, RSD, av pseudo-skada intensiteten är beräknad för att kvantifiera slumpmässig och betydelsefull variation. Tillgänglig data visar att ett RSD under 0,3 är att se som slumpmässig variation. RSD värden över detta tröskelvärde visar på existens utav spårbara variationer från belastningspåverkande faktorer. Resultaten från förstudien av beroendet mellan hjulkonfiguration och pseudo-skada är inte slutgiltiga. Den analyserade datamängden är för liten. Slutsatser och rekommendationer De lagrade accelerationerna ger en generell indikation om ‘utmattningslasten‘. Upplösningen är tillräcklig för att kunna studera de meningsfulla lastvariationerna. Regelbundna utläsningar, i ett tätare intervall, skulle främja mer detaljerade studier utav fordonsdriften.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Heavy vehicles"

1

Maclean, Gavin. Bikes and heavy goods vehicles. Godalming: Cyclists' Touring Club, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

International Conference on Heavy Vehicles (2008 Paris, France). International Conference on Heavy Vehicles: HVParis 2008 : heavy vehicle transport technology (HVTT 10). London: ISTE Ltd., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Inspectorate, Great Britain Vehicle. Heavy goods vehicle inspection manual: Explanatory notes on the methodsof inspecting heavy goods vehicles. London: H.M.S.O., 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Inspectorate, Great Britain Vehicle. Heavy goods vehicle inspection manual: Explanatory notes on the methods of inspecting heavy goods vehicles. London: H.M.S.O., 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Engineers, Society of Automotive, ed. Interaction between heavy vehicles and roads. Warrendale, PA: Society of Automotive Engineers, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Wang, Hong, Yanjun Huang, Amir Khajepour, and Chuan Hu. Electrification of Heavy-Duty Construction Vehicles. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-031-01495-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Dillmann, Andreas, and Alexander Orellano, eds. The Aerodynamics of Heavy Vehicles III. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-20122-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Heavy, heavier, heaviest. Mankato, MN: Amicus, 2014.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

How heavy is heavy?: Comparing materials. Chicago, Ill: Heinemann Library, 2011.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Overson, C. Heavy goods vehicles in Great Britain 1985. London: Department ofTransport, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Heavy vehicles"

1

Giakoumis, Evangelos G. "Heavy-Duty Vehicles and Engines." In Driving and Engine Cycles, 193–284. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-49034-2_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Johansson, Marten. "Correctly loaded heavy commercial vehicles." In International Conference on Heavy Vehicles HVParis 2008, 531–40. Hoboken, NJ, USA: John Wiley & Sons, Inc, 2013. http://dx.doi.org/10.1002/9781118557464.ch41.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Frank, Thorsten, and James Turney. "Aerodynamics of Commercial Vehicles." In The Aerodynamics of Heavy Vehicles III, 195–210. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20122-1_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Johansson, Mårten. "Improved brakes on heavy commercial vehicles." In International Conference on Heavy Vehicles HVParis 2008, 493–502. Hoboken, NJ, USA: John Wiley & Sons, Inc, 2013. http://dx.doi.org/10.1002/9781118557464.ch38.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Ahrholdt, Malte, Grant Grubb, and Erik Agardt. "Intersection Safety for Heavy Goods Vehicles." In Advanced Microsystems for Automotive Applications 2009, 87–96. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-00745-3_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Vaishnav, Anuj, Vaibhav Prasad, and Brahma Nand Agrawal. "Aerodynamic Design of Heavy Transport Vehicles." In Lecture Notes in Mechanical Engineering, 557–65. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9613-8_51.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Widmer, João Alexandre. "A proposal of an international vehicle designation structure for cargo combination vehicles." In International Conference on Heavy Vehicles HVParis 2008, 567–79. Hoboken, NJ, USA: John Wiley & Sons, Inc, 2013. http://dx.doi.org/10.1002/9781118557464.ch44.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Söderblom, David, Per Elofsson, Linus Hjelm, and Lennart Löfdahl. "Wheel Housing Aerodynamics on Heavy Trucks." In The Aerodynamics of Heavy Vehicles III, 211–23. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20122-1_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Muld, Tomas W., Gunilla Efraimsson, Dan S. Henningson, Astrid H. Herbst, and Alexander Orellano. "Analysis of Flow Structures in the Wake of a High-Speed Train." In The Aerodynamics of Heavy Vehicles III, 3–19. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20122-1_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wagner, Sebastian, Klaus Ehrenfried, and Andreas Dillmann. "A Simplified Model of the Wave Generation Due to Train-Tunnel Entry." In The Aerodynamics of Heavy Vehicles III, 161–73. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20122-1_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Heavy vehicles"

1

Atahan, Ali O., Abhishek S. Joshi, and Moustafa El-Gindy. "A Rear-End Protection Device for Heavy Vehicles." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42455.

Full text
Abstract:
Rear underride crashes, particularly with heavy vehicles, constitute a serious safety concern for passenger cars. Several solutions to this emerging concern have been proposed by responsible agencies. Recent rear-end crashes with heavy vehicles show that a properly used rear underride guard devices can slow down impacting vehicle in a controlled manner. Moreover, with the use of these devices, the severity of crashes can be reduced and loss of lives can be prevented. In this paper, a special underride guard device is designed for heavy vehicle use. The height of the device from ground and support conditions are varied to evaluate and compare the crash performances. Finite element models of these particular designs are constructed and models are impacted by a passenger car model traveling at two different speeds of 48 km/h and 64 km/h. LS-DYNA, a non-linear finite element code capable of analyzing large deformations is used for the analysis. Vehicle decelerations, energy dissipations and passenger car crush characteristics are compared to determine the acceptability of each design. Based on the simulation study, an optimum height from ground and support condition are determined for acceptable impact performance for heavy vehicle mounted rear -end underride guard devices against passenger vehicle impacts.
APA, Harvard, Vancouver, ISO, and other styles
2

Hyun, Dongyoon, and Reza Langari. "Predictive Modeling for Rollover Warning of Heavy Vehicles." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32105.

Full text
Abstract:
A predictive model to determine the rollover threat of heavy vehicles is proposed. The purpose of this model is to predict the rollover threat sufficiently in advance of the actual event so as to enable the driver to react accordingly. The Load Transfer Ratio (LTR) is used as a rollover threat index in this model. In order to facilitate a practical implementation of the proposed approach, a predictive model is established using a simple roll-plane model of the vehicle in conjunction with an online parameter identification strategy. This is to address the inherent issues involved in assessing certain key parameters in the proposed predictive model. The proposed predictive model and the associated parameter-identification algorithm are verified using a 14 degrees-of-freedom vehicle simulation model previously developed as a part of a broader study on heavy vehicles undertaken at Texas A&M University and supported by Texas Transportation Institute (TTI).
APA, Harvard, Vancouver, ISO, and other styles
3

Nylund, Nils-Olof, and Matti Kytö. "Propane Fueled Heavy-Duty Vehicles." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/932817.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Parthasarathy, Dhasarathy, Russ Whiton, Jonas Hagerskans, and Tomas Gustafsson. "An in-vehicle wireless sensor network for heavy vehicles." In 2016 IEEE 21st International Conference on Emerging Technologies and Factory Automation (ETFA). IEEE, 2016. http://dx.doi.org/10.1109/etfa.2016.7733554.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Rajaram, Vignesh, and Shankar C. Subramanian. "Collision Avoidance Algorithm for a Heavy Commercial Road Vehicle Under Heterogeneous Traffic." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66307.

Full text
Abstract:
In this paper, a collision avoidance algorithm (CAA) has been proposed using variable time headway considering heterogeneous traffic. The time headway used in the proposed CAA was tuned based on the traffic scenarios, the host vehicle’s load conditions and the type of the lead vehicle that the host vehicle encounters in the traffic. The proposed variable time headway would help to avoid the intervention of the collision avoidance system during normal driving and gain driver’s acceptance. The CAA was evaluated using a hardware-in-the-loop (HiL) experimental set-up integrated with the vehicle dynamic simulation software IPG/TruckMaker® for different categories of lead vehicles such as 2/3 wheelers, passenger cars, light commercial road vehicles (LCVs) and heavy commercial road vehicles (HCVs). From the results, it was observed that while following a HCV, a smaller time headway was sufficient to prevent a collision compared to following a passenger car, LCV and 2/3 wheeler.
APA, Harvard, Vancouver, ISO, and other styles
6

Evans, Jeffrey L., Stephen A. Batzer, Stanley B. Andrews, and Robert M. Hooker. "Evaluation of Heavy Truck Rollover Crashworthiness." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81300.

Full text
Abstract:
Heavy trucks (those having a gross vehicle weight rating of greater than 10,000 pounds) are an essential part of the United States economy and account for 4% of all registered vehicles. The large size and weight of these vehicles can pose a serious safety threat to the vehicle’s occupants in the event of a rollover collision. The rollover crashworthiness of heavy trucks, in particular the structural integrity of the cab, is analyzed in this paper. An actual rollover accident was analyzed and the cab design of an exemplar vehicle was evaluated. Modifications were made to the exemplar and an inverted drop test onto the roof of the cab was conducted. Recommendations for improving the rollover crashworthiness of heavy trucks are provided. An analysis of heavy truck rollover accidents was also conducted for data available from 1994-2002 by submitting queries to the Fatality Analysis Reporting System (FARS), which is administered by the National Highway Safety Administration (NHTSA), in order to determine the number of incapacitating and fatal injuries that occurred when the occupants were contained in the cab during a rollover accident. The percentage of incapacitating and fatal injuries for restrained occupants was determined by analyzing the rollover data obtained from the FARS rollover query that was used and was found to be 35%. Therefore, restrained occupants in heavy trucks can sustain significant injuries during rollover accidents, in part, due to insufficient rollover crashworthiness.
APA, Harvard, Vancouver, ISO, and other styles
7

Pisu, Pierluigi, C. Hubert, N. Dembski, G. Rizzoni, John Josephson, James Russell, and Mark Carroll. "Modeling and Design of Heavy Duty Hybrid Electric Vehicles." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81514.

Full text
Abstract:
A large scale design space exploration provides invaluable insight into vehicle design tradeoffs. Performing such a search requires designers to: • define appropriate performance criteria by which to judge the vehicles in the design space; • develop vehicle models to calculate the needed criteria; and • determine suitable velocity profiles as well as grade and terrain conditions to feed into the models. This paper presents a methodology for creating and conducting a design space exploration with particular application to heavy duty series hybrid electric-trucks.
APA, Harvard, Vancouver, ISO, and other styles
8

Harrison, Harold D., Li R. Cheng, and William GeMeiner. "Tracking the Performance of Heavy Axle Load Vehicles in Revenue Service." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15730.

Full text
Abstract:
As market forces drive up the gross weight on rail, railroads continue moving toward increased usage of heavy axle load (HAL) equipment, namely 286,000 lb and 315,000 lb GWR vehicles that provide more competitive and efficient transportation. According to the AAR's Universal Machine Language Equipment Register (UMLER) database, since 1995, at least 70% of vehicles built each year were HAL vehicles. 2005 had 49,923 more HAL vehicles running on the North America railroad system than the previous year. This practice can result in significant overall savings in operating costs. However, HAL equipment can also accelerate wear and damage to the railroad infrastructure and have a greater potential for truck warping and vehicle dynamics problems. Thus, keeping rolling stock and track safe while ramping up the usage of HAL equipment presents a significant challenge. Wheel Impact Load Detector (WILD) SuperSites, developed by Salient Systems Inc. (SSI), provide real time monitoring and alarming on excessive axle loads and vehicle dynamics. SuperSites are important tools in the scientific study of HAL vehicles and the monitoring of heavy haul operations. This paper provides a snapshot of results of studies conducted on Union Pacific (UP) HAL routes and demonstrates how HAL loads affect the rolling stock, the track, and the wheel/rail interaction. The heavier the load, the higher the impact of the defective wheels to the track; therefore, heavily loaded vehicle routes (such as the coal route from the Powder River Basin to Kansas City and the primary intermodal route from Los Angeles to El Paso) need to be monitored more proactively to avoid track structural damage.
APA, Harvard, Vancouver, ISO, and other styles
9

Swihart, W. R. "Integrated collision warning and vehicle information systems for heavy vehicles." In IEE Colloquium on Monitoring of Driver and Vehicle Performance. IEE, 1997. http://dx.doi.org/10.1049/ic:19970657.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Radlinski, Richard W. "Braking Performance of Heavy U.S. Vehicles." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1987. http://dx.doi.org/10.4271/870492.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Heavy vehicles"

1

Iyer, Rakesh, Jarod Kelly, and Amgad Elgowainy. Vehicle-Cycle Inventory for Medium- and Heavy-Duty Vehicles. Office of Scientific and Technical Information (OSTI), November 2021. http://dx.doi.org/10.2172/1831152.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Pruez, Jacky, Samir Shoukry, Gergis Williams, and Mark Shoukry. Lightweight Composite Materials for Heavy Duty Vehicles. Office of Scientific and Technical Information (OSTI), August 2013. http://dx.doi.org/10.2172/1116021.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Li, Howell, Tom Platte, Jijo K. Mathew, W. Benjamin Smith, Enrique Saldivar-Carranza, and Darcy M. Bullock. Using Connected Vehicle Data to Reassess Dilemma Zone Performance of Heavy Vehicles. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317321.

Full text
Abstract:
The rate of fatalities at signalized intersections involving heavy vehicles is nearly five times higher than for passenger vehicles in the US. Previous studies in the US have found that heavy vehicles are twice as likely to violate a red light compared with passenger vehicles. Current technologies leverage setback detection to extend green time for a particular phase and are based upon typical deceleration rates for passenger cars. Furthermore, dilemma zone detectors are not effective when the max out time expires and forces the onset of yellow. This study proposes the use of connected vehicle (CV) technology to trigger force gap out (FGO) before a vehicle is expected to arrive within the dilemma zone limit at max out time. The method leverages position data from basic safety messages (BSMs) to map-match virtual waypoints located up to 1,050 ft in advance of the stop bar. For a 55 mph approach, field tests determined that using a 6 ft waypoint radius at 50 ft spacings would be sufficient to match 95% of BSM data within a 5% lag threshold of 0.59 s. The study estimates that FGOs reduce dilemma zone incursions by 34% for one approach and had no impact for the other. For both approaches, the total dilemma zone incursions decreased from 310 to 225. Although virtual waypoints were used for evaluating FGO, the study concludes by recommending that trajectory-based processing logic be incorporated into controllers for more robust support of dilemma zone and other emerging CV applications.
APA, Harvard, Vancouver, ISO, and other styles
4

Ledna, Catherine, Matteo Muratori, Arthur Yip, Paige Jadun, and Chris Hoehne. Decarbonizing Medium- & Heavy-Duty On-Road Vehicles: Zero-Emission Vehicles Cost Analysis. Office of Scientific and Technical Information (OSTI), March 2022. http://dx.doi.org/10.2172/1854583.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Robert J. Englar. Continued Development and Improvement of Pneumatic Heavy Vehicles. Office of Scientific and Technical Information (OSTI), July 2005. http://dx.doi.org/10.2172/912758.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Murphy, Brian, and Mark Brought. Technology Evaluation and Integration for Heavy Tactical Vehicles. Fort Belvoir, VA: Defense Technical Information Center, August 2010. http://dx.doi.org/10.21236/ada548457.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wambsganss, M. W. Thermal management for heavy vehicles (Class 7-8 trucks). Office of Scientific and Technical Information (OSTI), April 2000. http://dx.doi.org/10.2172/754232.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kennedy, John H., Peter Polubiatko, and Michael A. Tucchio. Demonstration of Alternative Fuel, Light and Heavy Duty Vehicles in State and Municipal Vehicle Fleets. Office of Scientific and Technical Information (OSTI), February 2002. http://dx.doi.org/10.2172/792091.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Armstrong, B. L., A. D. McMillan, A., Walls C., J. J. Henry, and P. S. Sklad. High-Conductivity Graphite Foams for Thermal Control in Heavy Vehicles. Office of Scientific and Technical Information (OSTI), September 2007. http://dx.doi.org/10.2172/940253.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

R.R. Fessler and G.R. Fenske. Multiyear Program Plan: Reducing Friction and Wear in Heavy Vehicles. Office of Scientific and Technical Information (OSTI), December 1999. http://dx.doi.org/10.2172/771210.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Heavy vehicles' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography