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At the request of the World Bank, a roadside safety audit was conducted for three existing expressways in Jiangxi Province, China, with an aim to developing safer roadside safety designs for the World Bank funded Ruijin — Ganzhou Expressway (RGE) project in Jiangxi Province. On top of a routine road safety audit process, traffic collision records for roadside safety crashes were analyzed to supplement...
The basic concept of video streaming over several vehicular platforms, the main requirements from those different applications are described. The common challenges from these sectors are studied; an actual design overcoming part of these difficulties is reported. Section I is the introduction of the challenges, section II is the briefing for the customized solution, section III is the detail design...
According to situation of ITS application to improve road traffic safety in foreign countries, the necessity to develop ITS in Chinese road safety management is analyzed. On the mechanism analysis of ITS application to promote road traffic safety, ITS technologies were list in three aspects, policy suggestions and promotion strategy were put forward according with national situation to solve issues...
Dedicated Short Range Communication (DSRC) is a promising technique for vehicle ad-hoc network (VANET) and collaborative road safety applications. As road safety applications require strict quality of services (QoS) from the VANET, it is crucial for DSRC to provide timely and reliable communications to make safety applications successful. In this paper we propose two adaptive message rate control...
In this paper, we study an NP-hard lane reservation problem on transportation network. By selecting lanes to be reserved on the existing transportation network under some special situations, the transportation tasks can be accomplished on the reserved lanes with satisfying the condition of time or safety. Lane reservation strategy is a flexible and economic method for traffic management. However,...
Longitudinal slope section of the road is high frequency location of traffic accidents. In order to improve the road safety, the paper was based on the traffic engineering, applying psychology and other theories, and used the advanced GPS, MC5600 and other testing equipments to detect and investigate the road alignment, speed, driver's heart and physiological responses and traffic characteristics...
CST is a new kind of vehicle passive safety device. In order to study the difference of CST for different weight vehicles, UG, VPG, LS-DYNA would be used to simulate and calculate, and it showed that influence of vehicle weight on CST shear fracture and blunt edge roundness is very great, this could provide a strong foundation for the study of CST on different vehicles, and also has great reference...
Recent advances toward steer-by-wire technology have promised significant improvements in vehicle, safety, stability, dynamics and maneuverability. The conventional mechanical linkages between the steering wheel and the front wheel are removed in this system. While the complete separation of the steering wheel from the road wheels provides exciting opportunities for vehicle dynamics control, it also...
An advanced driving assistance system (ADAS) becomes more and more important since it can improve driving safety. It is composed of a human driver and an automated system called co-pilot. To make it effective, the driver and co-pilot should properly cooperate. Hence, it is very important to define and model their cooperation behavior such that an ADAS can be effectively designed and realized. This...
The safety grade of Long and Steep Downhill Roads (LSDRs) on mountainous expressway is determined on the basis of analysis of safety factors, and the safety evaluation index system and the weights are build. Based on the theory of grey clustering, the classic whitening weight function is improved, and a gray fixed weight-clustering evaluation model of LSDRS is established to evaluate the security...
In order to ensure ambulance man arrived the scene on time, remove the accident , treat the injured after the accident occurred, and achieve to the minimize loss of traffic accidents and the maximum social benefits, basing on principles of reliability, this paper which started with emergency rescue system structure analyzed the structure of emergency rescue system on highway, from three ways: incident...
This paper documents the speed reduction impacts of intersection control beacon on rural highway on Xu song road of Beijing City, China. To determine the effect of intersection control beacon on stopping behaviors of drivers, a camera was used to collect valid samples at four times. After data preparation, there were 200 valid samples. In order to research the changing of vehicle speed and relationship...
The intersection is the critical node in city, and has important influence on traffic flow. Whether the intersection is controlled reasonably is the key to the safety and efficiency of the intersection. Because of the current urban intersection control type existing unreasonably, In view of this situation, typical intersection is selected as main object of study. LOS is chosen as Performance Index,...
Established the computational model about the safe distance of vehicles. In order to simulate the dynamic model of rear-end, based on VB software to build a freeway rear-end simulation system. Simulation system provides an important means for in-depth study on rear-end probability. To investigate the non-linear relationship of probability and impact factors of rear-end, established probability of...
To solve the problem that traffic safety risks is difficult to identify and compare quantitatively for the new road or accident black spots, the virtual simulation tests (VST) system is put forward combined the numerical simulation. The driver module on vehicle speed control, the vehicle dynamic network solution module, traffic environment 3D model, traffic safety management and control module, human-vehicle-road...
Dedicated Short Range Communication (DSRC) based Vehicular Ad Hoc Network (VANET) provides an opportunity to enable communication-based cooperative safety systems in order to decrease road traumas and improve traffic efficiency. VANET also offers a wide range of commercial and infotainment applications. VANET exhibits unique characteristics that create new challenges. This paper discusses the DSRC...
Safety-critical applications form the main motivation for intelligent transportation systems. Studying the major concerns in such applications, i.e., delay and reliability, through mathematical analysis is extremely beneficial because it enables us to design optimized schemes. Such analysis is, however, challenging due to the dynamics of such a network. In this paper, we present a mathematical model...
Today, Intelligent Transportation System (ITS) applications has made a great impact on improving the quality and efficiency of the transportation system. This achievement has attracted researchers to propose more ITS applications, particularly to improve the transportation safety through Vehicular Ad Hoc Networks (VANETs). The major difficulty faced by these researchers is the verification of their...
The safety of powered two wheelers (PTWs) is an important concern for public authorities and road administrators. In France, even though road safety has improved since 2002, the number of accidents involving PTWs is still high. If we look at the figures, PTWs represent only 1% of the traffic but 28% of the deaths on the road. This shows that the risk of getting killed on a motorbike is 24 times greater...
This paper aims at real-time in-car video analysis to detect and track vehicles ahead for safety, autodriving, and target tracing. This paper describes a comprehensive approach to localizing target vehicles in video under various environmental conditions. The extracted geometry features from the video are continuously projected onto a 1-D profile and are constantly tracked. We rely on temporal information...
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