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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...
Environment, sustainable development as well as new transportation service emergence in urban areas are major concerns. Consequently, studies are currently intended to automate electric vehicles designed for applications in free access. An additional functionality that appears very attractive is vehicle platooning. In order to avoid oscillations within the fleet when completing this task, a global...
In this paper, a Quasi-shot Segmentation Vehicle Detection (QSVD) method is proposed to improve the accuracy and robustness of traffic flow detection. The QSVD method is based on histogram intersection method to find the biggest difference between successive frames. Adjacent frames are considered in when vehicle is detected in current frame. Relying on the QSVD method, vehicle can be detected by signal...
In this paper we present an optimal omnidirectional visual sensor which can replace perspective camera network for traffic diagnosis. The proposed system has the advantage, by the number and the designed mirror, to generate a single view of the crown and junction ways of the crossroads by maximizing the number of useless pixels. So, the percentage of pixels utilized directly for subsequent phases...
The limits of spatial attention during driving were examined using a dual-task performance paradigm in present study. Subjects were asked to follow a lead vehicle that varied in speed while also detecting a light change in an array located above the roadway. The results show that reaction time increased and accuracy decreased as a function of the horizontal location of the light change and the distance...
Vehicular movements are bounded to some rules and regulations based on the environment and road networks. Visual signals are the most common way of transferring perception of motion to immediate vehicles but these indications do not portray correct perception of the motion. Visual indications are reserved for forward vehicle intensions but such indications can not provide surety of avoiding collisions...
The work described in this paper is part of a larger research program named Partage whose goal is to appropriately share lateral control between the driver and an electronic copilot or assistance. The present study is looking for a cybernetic model of a driver steering road vehicle, which makes the sensorimotor dynamics explicit. The proposed model takes into account both visual and kinesthetic perception,...
Vision difference or inattention to the traffic condition often causes the unnecessary traffic accidents while driving. Therefore, this study is to fast detect both the preceding vehicle and lane marking at the least response time 0.5972 seconds. After coordinate transformation converts image plane coordinates of the preceding vehicle to GPS coordinates, the headway between cars is obtained to assist...
This study examined the difference of driving performance according to turn types (left /right turn), suggested by Bao and Boyle (2009), and age(old and young adults). To do that, the turn types at the intersection were divided into 12 scenarios of left and right turn, respectively and by making approach velocity at the intersection, the passing time at the intersection, the speed and steering variation...
The benefits of variable speed limit signs (VSLS) include preventing drivers from rear-end collisions and maintaining a stable traffic flow on roads. However, the configurations of VSLS will directly or indirectly affect driverspsila recognition to VSLS systems and then influence their driving behavior. Since bus passenger occupancy is much higher than that of a small passenger car, a bus accident...
This paper describes a development of vision sensor that can detect shockwave propagation that is one of main factors of accidents in highway traffic flow. In addition, realization of a driver assistance system that informs arrival of such shockwave to drivers by the vision sensors is shown. To evaluate the reliability of the system, both recall rate and false rate of the system is investigated by...
Speed and speed variance are related to the intensity and the number of traffic accidents, and the effective control on speed and speed variance is the key to enhance the road safety. Perceptual speed reduction technology is human-oriented, which has several merits such as the low cost, initiative and so on. The article explains the research significance of perceptual speed reduction; induces the...
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