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Proceedings of Conference on Intelligent Transportation Systems

12-12 Nov. 1997

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Displaying Results 1 - 25 of 186
  • Opening comments

    Publication Year: 1997, Page(s):14 - 15
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  • Perspectives from the private sector

    Publication Year: 1997, Page(s):16 - 18
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  • Issues of in-vehicle ITS informaion management

    Publication Year: 1997, Page(s):33 - 37
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  • Closing plenary

    Publication Year: 1997, Page(s): 39
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    Provides an abstract of the presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. View full abstract»

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  • Index of authors

    Publication Year: 1997, Page(s):1074 - 1081
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  • Index of titles

    Publication Year: 1997, Page(s):1082 - 1085
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  • Index of keywords

    Publication Year: 1997, Page(s):1086 - 1088
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  • Proceedings of Conference on Intelligent Transportation Systems

    Publication Year: 1997
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  • An isolated traffic intersection feedback control using H

    Publication Year: 1997, Page(s):942 - 947
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    This paper is concerned with the development of a robust and demand-responsive control model to provide optimum signalization and queue management at an isolated intersection. We formulate the signal control problems for a simple isolated intersection in the H-control framework. The system is hybrid, in that the the dynamical equations are for a continuous-time model for average... View full abstract»

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  • Simulation study of learning automata games in automated highway systems

    Publication Year: 1997, Page(s):936 - 941
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    We propose an artificial intelligence technique called stochastic learning automata to design an intelligent vehicle path controller. Using the information obtained by on-board sensors and local communication modules, two automata are capable of learning the best possible actions to avoid collisions. Although the learning approach taken is capable of providing a safe decision, optimization of the ... View full abstract»

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  • Dynamic traffic control: decentralized and coordinated methods

    Publication Year: 1997, Page(s):930 - 935
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    ALLONS-D is a decentralized real-time traffic control scheme. Through simulations, the scheme is shown to be suitable for adaptive control of an isolated intersection. An efficient tree searching algorithm, constrained only by a maximum and minimum green time per phase, is used to find a traffic signal plan that minimizes delay. Differences between ALLONS-D and other real-time traffic control sche... View full abstract»

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  • Steering and lane change: a working system

    Publication Year: 1997, Page(s):272 - 277
    Cited by:  Papers (24)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    In this paper, steering control of ground vehicles is studied and the lane keeping and lane changing algorithms of the 1997 NAHSC OSU Demo Vehicles are presented. The proposed lateral controller uses preview orientation information, longitudinal velocity measurement and a yaw rate sensor output to steer the vehicle autonomously. The only input to the system is the steering angle on the front tires... View full abstract»

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  • Travel time estimation in urban road networks

    Publication Year: 1997, Page(s):924 - 929
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The development of two methods for the estimation of link travel times at signalised junctions under traffic responsive control are described. In the first method, neural networks were trained with data from a microscopic traffic simulator of an isolated junction operating under traffic responsive control. In the second method, a simple queueing model was evaluated with data from a registration pl... View full abstract»

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  • Cooperatively controlled collision avoidance

    Publication Year: 1997, Page(s):824 - 829
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    The cooperative control concept can be applied to the vehicle controlled collision avoidance system. It can be transformed from the driver assistant controller and be extended to the future IVHS applications. In this paper, the system architecture of the cooperatively controlled collision avoidance system and advantage over independently controlled vehicles will be discussed View full abstract»

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  • On the steering control of automated vehicles

    Publication Year: 1997, Page(s):266 - 271
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    Path tracking control of car-like wheeled vehicles is considered. In a planar motion, the equations governing the behaviour of a vehicle express the dynamics of the lateral and yaw motion velocities and the two tracking errors, the offset and the heading error from a prespecified path. With an appropriate feedback of the two errors the path tracking behaviour of the vehicle can be guaranteed. In t... View full abstract»

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  • Vision for longitudinal vehicle control

    Publication Year: 1997, Page(s):918 - 923
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    An important component of the drive towards intelligent vehicles is the ability to maintain a fixed distance from a lead vehicle using feedback provided by range sensors. We investigate the possibility of using stereo vision to provide the range information, in conjunction with a scanning laser radar sensor. The tracker utilizes a layered architecture wherein the bottom layer computes motion in bo... View full abstract»

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  • Validation and simulation of a decentralized intersection collision avoidance algorithm

    Publication Year: 1997, Page(s):818 - 823
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    In this paper an approach to a decentralized intersection management is presented which does not require much additional infrastructure at the intersection and which can operate in today's traffic so as to increase safety and to avoid congestion. Collision avoidance is ensured by using semaphore-based algorithms which allow only one vehicle to stay in a critical intersection region. Verification o... View full abstract»

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  • Traffic monitor using two multiple-beam laser radars

    Publication Year: 1997, Page(s):189 - 194
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    A typical laser radar for detecting automobiles on highways has a very narrow beam that limits its ability to detect any targets outside its detecting zone. A multiple-beam laser radar provides a wider long-distance target detection region, but still suffers from close range problems. This paper demonstrates how two multiple-narrow beam laser radar units were extended to produce a smooth traffic m... View full abstract»

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  • Statistics-based simulation methodology for evaluating collision countermeasure systems performance

    Publication Year: 1997, Page(s):490 - 495
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    Extensive dynamic simulation studies were conducted to evaluate the ability of collision countermeasure systems (CMS) to prevent run-off-road accidents. A key challenge facing the development of an effective CMS is the ability to function successfully given the wide range of driver types, vehicle characteristics, road conditions and driving situations. A Monte Carlo approach based on Latin hypercu... View full abstract»

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  • H controller design for automatic steering of vehicles with modeled time delays

    Publication Year: 1997, Page(s):260 - 265
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    An H controller is designed for automatic steering of vehicles. In this study the main objective is to keep the vehicle's center of gravity close to the center of the lane despite small variations in the speed of the vehicle. A generic sensor/actuator pair is assumed for the vehicle: the measured output is the offset signal at a look-ahead point, and the control input is the stee... View full abstract»

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  • Road markings recognition using image processing

    Publication Year: 1997, Page(s):912 - 917
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    Repainting road markings is an important road maintenance task. An automatic repainting module (called “MRA”) is being developed in France by the Laboratoire Central des Ponts-et-Chaussees. In this context, our goal is to design image processing methods for automatically extracting the parameters of the repainting process (e.g. line width or dashes modulation) from the scene images. We... View full abstract»

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  • Highway scene analysis in hard real-time

    Publication Year: 1997, Page(s):812 - 817
    Cited by:  Papers (7)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    A hard real-time vision system has been developed that analyses color videos taken from a car driving on a highway. The system uses a combination of color, edge, and motion information to recognize and track the road boundaries, lane markings and other vehicles on the road. Cars are recognized by matching templates that are cropped from the input data online, by detecting image features, and by ev... View full abstract»

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  • Improving positioning, guidance, system and communication technology of AVCS by optics

    Publication Year: 1997, Page(s):765 - 768
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    This paper presents a number of new approaches for ground vehicles to improve the positioning, guidance, navigation, multivehicle system approach and communication system for all functions by using laser and light beams and corner cubes. Regarding the positioning, guidance and navigation, two types of method, active and passive, are presented with effective, useful experiments and their commercial... View full abstract»

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  • Concept of a sophisticated metropolitan expressway telephone system

    Publication Year: 1997, Page(s):183 - 188
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    The Metropolitan Expressway Public Corporation has studied the establishment of a new telephone system which receives the designation of an origin (entrance) and destination (exit point) by a user through a telephone and provides information only related to the zone that the driver will actually use. A simulation was then developed to compare the new system to the one in current use in terms of th... View full abstract»

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  • Activity based highway capacity analysis: a case study

    Publication Year: 1997, Page(s):153 - 158
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The activity based theory of traffic flow is applied to evaluate highway capacity for four different concepts of automated vehicles in the high occupancy vehicle (HOV) lane of the Houston Katy Highway. Three increasing patterns of traffic demand are considered. SmartCap, a meso-scale software tool developed in the California PATH program, was used to simulate the highway behavior. Simulation resul... View full abstract»

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