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Parallel parking is challenge for all drivers say amateurs or the experts. An automatic car parking system is a solution to this ordeal. This vehicular technology has been implemented using many other systems but a cost effective, simple and accurate solution will be greatly appreciated. This paper explains in detail a simple and precise autonomous car-parking algorithm for Ackerman steering configuration...
The Real time locating system (RTLS) determines and tracks the location of assets and people. This paper presents a novel application to estimate the position and velocity of vehicle using wireless sensor network. Two Anchor nodes are used as reader along roadside and total distance between them is known. Whenever a moving vehicle with tag comes in between the common part of the operating range of...
This paper introduces a robust prediction- and cost-function based algorithm for autonomous freeway driving. A prediction engine is built so that the autonomous vehicle is able to estimate human drivers' intentions. A cost function library is used to help behavior planners generate the best strategies. Finally, the algorithm is tested in a real-time vehicle simulation platform used by the Tartan Racing...
Traffic safety in any type of transportation systems is a global concerned issue. In this paper, we propose a clustering-based multi-channel vehicle-to-vehicle communication system to provide traffic accident avoidance mechanism. In the proposed system, vehicles are self-organized into different clusters, and the traditional single common medium in ad hoc networks has been divided into multiple control...
The rear-view camera at the vehicle's backside is equipped for parking supports display system. It requires a wide-angle lens for obtaining a broad landscape. Throughout the wide-angel lens, an input picture is converted the Barrel distortion. Therefore, a driver cannot make out the distorted input picture in order to overlay the track directly. In this paper, we propose the generation automatic guideline...
This paper presents the design of an automatic anti- collision system which composed by embedded FPGA, DSP and ARM. TMS320DM6437 DSP as the core of the system, and Spartan-3 FPGA, S3C2410 ARM9, EP1C3T144C6 FPGA is its best match. First, we designed FPGA + DSP 3 way video surveillance system and DSP + ARM + FPGA automatic warning and control system, then combined them together to complete the whole...
In this paper, a hierarchical fuzzy logic traffic controller is constructed for a real intersection of fourteen vehicle lanes and two pedestrian crossings controlled by signals with seven light phases. The hierarchical fuzzy controller has seven inputs as queue lengths of the seven light phases, and one output as green time of the selected phase. In the hierarchical fuzzy controller, there are six...
Emergency service vehicles need safety and fluent paths to save time. In this paper, a centralized traffic control mechanism is proposed for the evacuation of vehicles that drive toward the dedicated path of the emergency vehicles (EV), e.g. ambulance, fire engines, police cars, etc, using the dedicated short range communications (DSRC) protocol. In our proposed mechanism, a centralized server is...
Real-time information of the whole road can be acquired by in-vehicle road condition acquisition technology, which used to ensure the freeway safety under adverse weather. The influencing factors and evaluation parameters of the road condition under the adverse weather were analyzed, and functions of the in-vehicle road information acquisition system were decided. On the basis of those, the road detection...
Safety performance of highways has always been the focus of traffic engineering studies. Although many factors impact safety of highway transportation, at-grade intersection spacing is by far one of the most important factors. In reality, many situations can lead to closely neighbored intersections which become major causes of traffic accidents. To improve safety, intersection spacing should guarantee...
How to improve the capacity of the signalized intersections is one of the most important majors at recent years. At home and abroad though the waiting-area for left-turn vehicles has been settled, the spare area of the intersection isnpsilat made good use to increase the capacity of the intersection. This paper do some work on the waiting-area for through vehicles and the second stop-line, at the...
This paper analyzes the influence factors of sub-zone combined and separated in adaptive traffic signal control system and attempts to fix quantify influence factors that act as the performance indices. Then analyzes the intersections correlation coefficient confirms the ideal state and negative state of sub-zonepsilas combined and separated. Collect VISSIM data as datum mark to compute adjacent intersectionpsilas...
In this paper, we apply the Multiple Velocity Difference (MVD) model to the two-lane traffic system and present an extended model of two-lane traffic in which vehicles change the lane by a deterministic rule. Then, we investigate the typical traffic induced by a car accident on the left lane under the open boundary. We carry out the simulation to observe the evolution of traffic jam. The simulation...
We describe an autonomous robotic software subsystem for managing mission execution and discrete traffic interaction in the 2007 DARPA Urban Challenge. Its role is reviewed in the context of the software system that controls ldquoBossrdquo, Tartan Racingpsilas winning entry in the competition. Design criteria are presented, followed by the application of software design principles to derive an architecture...
In this study, four cellular automata (CA) rules for advanced vehicle control and safety systems (AVCSS) are proposed and simulated. The major difference among the rules is that different gap is designed due to the speed of vehicles. According to the results, CA rules with AVCSS (the H0, H1, H2 and H3 models) perform stable traffic in the uncongested regime and larger flow and speed in the congested...
The reinforcement learning is applied to automatic parking problem for four-wheeled automobile. The automobile controlled by reinforcement learning learns the appropriate steering angle against the outer environment using distance measuring sensors. The Rational Policy Making (PRM) Method is introduced in order to cope with random start positions. The present method has the advantage of easy implementation...
In this paper we suggest an evolutionary computational approach by applying a combination of a genetic algorithm and a tabu search to obtain a good solution for relatively large unidirectional automated guided vehicle flowpath design problems. Unidirectional flowpaths are used to lessen the traffic control loads for large fleets of vehicles and to increase the efficiency in use of space. The flow...
The work consists in the preliminary development of a fuzzy system capable of taking decisions to avoid collisions or to minimize his damages, dues to lack of attention of the driver so increasing the active safety of vehicles fitted with it. The system is based on the use of some simple and economical ultrasound transducers as sensor elements for helping cars driving in urban traffic. The simulations...
Longitudinal control of platoons of vehicles is appropriate to improve the traffic capacity of road networks while maintaining safety distances between vehicles. This paper investigate the possibility of reducing the number of accidents involving pedestrians or other vulnerable road users, like cyclists and motorcyclists, by providing the control systems of the vehicles of the platoon with some collision...
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