By Topic

Road Traffic Monitoring and Control, 1994., Seventh International Conference on

Date 26-28 Apr 1994

Filter Results

Displaying Results 1 - 25 of 43
  • Automated measurement of crowd density and motion using image processing

    Publication Year: 1994 , Page(s): 127 - 132
    Cited by:  Papers (11)  |  Patents (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (428 KB)  

    Some image processing techniques applicable to the measurement of density and motion in crowded scenes have been presented. These give results comparable to human observers with potential for real-time implementation. A useful characteristic of these techniques is their independence from the apparent shape of individual pedestrians. Detailed studies of site usage and real-time monitoring then become feasible View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The CARS demand-responsive traffic control system: recent improvements and experiences

    Publication Year: 1994 , Page(s): 93 - 96
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (208 KB)  

    CARS is a third generation traffic control system that follows a centralised approach and can operate either on isolated junctions, arterials, or networks. It does not rely on the traditional concepts of cycle, split and offset, but calculates acyclic settings. Coordination between junctions is achieved through an underlying simulation model that deals with packets of vehicles moving according to an ad-hoc packet-following model, and stopping in horizontal queues. Tests by the AIMSUN microscopic simulation have showed a sustained improvement over optimal fixed-control settings on a wide range of traffic conditions View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of a coordinated ramp-metering system near Amsterdam

    Publication Year: 1994 , Page(s): 185 - 189
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (300 KB)  

    This paper describes the project for the evaluation of strategies for coordinated ramp-metering on the A10. It focuses on the simulation studies, the design of the communication network and the assessment study View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The implementation of SCOOT in the city of Nijmegen in the Netherlands

    Publication Year: 1994 , Page(s): 68 - 72
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (336 KB)  

    Trying to reach a new and better balance between the conflicting interests of transportation on one side and the environment on the other side is the challenge of the Second Transport Structure Plan, which is approved by Parliament. This plan has three main objectives: improve access to urban centres and reduce congestion, contain the growth of vehicle mileage and improve environmental conditions and traffic safety. Real-time control systems are considered as possibilities to come to a better utilization of the urban and interurban networks. It was decided to implement such a system in Nijmegen in order to assess the traffic performance of an online optimized real-time control system against the existing control system. This paper describes the implementation and plans for the evaluation of SCOOT in Nijmegen. It was explicitly decided not to develop a new real-time control system, but to consider the possibilities and applicability of an existing system View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Privatisation of traffic control, surveillance and related systems in the Klang Valley, Malaysia

    Publication Year: 1994 , Page(s): 16 - 18
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (188 KB)  

    The Klang Valley in Malaysia is centred around the River Klang and includes Klang and Port Klang on the West Coast, Shah Alam the capital of Selangor State, Kuala Lumpur, the capital of Malaysia and other major urban areas of Petaling Jaya and Subang Jaya. It is the main urban development area of peninsular Malaysia. The article describes proposals for an automated traffic surveillance and control system (including detection of motoring offences), to come under a single authority because the urban areas are merging View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ROMANSE (ROad MANagement system for Europe) project

    Publication Year: 1994 , Page(s): 1 - 4
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (240 KB)  

    ROMANSE-ROad MANagement System for Europe-is a three year £8.5 million pilot project based in Southampton. It aims to use advanced transport telematics to develop the city as a model for transport management systems across Europe. ROMANSE intends to achieve this by providing accurate and timely travel information to influence travel behaviour, increase the use of public transport, maximise the efficiency of the transport system and provide high quality information for use in strategic policy decisions View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evaluation and testing of SPOT and SOS-II control strategies using HUTSIM simulator

    Publication Year: 1994 , Page(s): 60 - 63
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (228 KB)  

    A new type of traffic simulator has been developed in Finland by Helsinki University of Technology (HUT), Laboratory of Transportation Engineering since 1989. The name of the simulator is HUTSIM. The main objective is to develop a tool for traffic signal planners to design better signal control systems, programs and strategies. This is done by making it possible to evaluate and compare control arrangements by means of delays, stops and queues caused to traffic by signals. The offline evaluation allow the designer to verify the level of signal performance to choose the best solutions View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Control by variable speed signs: results of the Dutch experiment

    Publication Year: 1994 , Page(s): 145 - 149
    Cited by:  Papers (17)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (328 KB)  

    This paper presents the results of the Dutch experiment with the application of variable speed control on motorways. The measure consists of implementing a reduced speed limit on a motorway section, in order to smooth or homogenise the flow of traffic. The speed limits are implemented only when volume approaches the capacity and are kept constant on a complete (predefined) section of motorway. Only the limits of 90 and 70 km/h are used, and the choice between these two is made each minute, based on measurements of the average traffic speed on the section, such as to keep the difference between average and limit speed small. The aim of the control is not to reduce the average speed, but to reduce speed differences, between and within lanes View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Traffic control and surveillance on the road to Chek Lap Kok

    Publication Year: 1994 , Page(s): 10 - 15
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (332 KB)  

    A new airport is currently being constructed to serve the territory of Hong Kong. It is situated at Chek Lap Kok off the north coast of Lantau Island which is itself off the west coast of the Kowloon peninsula and to the north west of Hong Kong Island. In addition to construction of the airport, there are a number of major infrastructure projects in progress which are necessary to provide ground transportation links between this hitherto fairly isolated area and the urban centres of Hong Kong Island, the Kowloon peninsula and the rapidly developing urban areas of the New Territories. This paper describes the traffic control, surveillance and communication systems which are to be installed within a Control Area on one of these ground transportation links, an Expressway formed by part of Route 3 and the Lantau Fixed Crossing View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An image-processing system for pedestrian data collection

    Publication Year: 1994 , Page(s): 123 - 126
    Cited by:  Papers (3)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (240 KB)  

    The aim of this research project was to investigate the software techniques which can be used to obtain information on pedestrian movements automatically using image processing technology. To fulfil this aim, two separate algorithms have been developed. One is designed to give a measure of the pedestrian density within a crowd scene and the second to count and determine the walking direction of individual pedestrians. The problems presented by a scene of pedestrians include high levels of occlusion, variability in the shapes of pedestrians with time, and the unpredictable nature of changes in walking speed and direction, especially in crowded scenes. To overcome these problems a number of assumptions have been made about the scenes being analysed and the nature of pedestrian movement. The pedestrian monitoring functions investigated in this project illustrate the feasibility of automatic pedestrian data collection. Real-time performance has been achieved for the density measuring routine using a small network of three transputers operating in parallel View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Seventh International Conference on `Road Traffic Monitoring and Control' (Conf. Publ. No.391)

    Publication Year: 1994
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (36 KB)  

    The following topics were dealt with: comprehensive traffic control systems; paying for roads; vehicle actuation within fixed time; public transport priority; local junction control; traffic data collection; image processing; changeable message signs; incident detection; and ramp metering and congestion control View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • TACRIM: some results

    Publication Year: 1994 , Page(s): 177 - 180
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (208 KB)  

    TACRIM (the Spanish acronym for a critical junction antiblocking technique) is a new traffic control adaptive system that has demonstrated, through some extensive field trials and evaluation process, its real time capability to improve urban junctions optimization. It can be installed on both isolated or centralized local controllers (the two cases have been tested in Madrid and Barcelona, Spain). Due to the type and number of detectors required by the system, vision based systems are introduced in order to reduce installation cost and to ensure that all the capabilities are met. This paper focuses on the results obtained through the evaluation process done in Madrid on the system View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electronic sign strategies and their benefits

    Publication Year: 1994 , Page(s): 141 - 144
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (244 KB)  

    Recent years have seen the introduction of many electronic signs providing dynamic information to road users. These variable message signs (VMS) are, in most cases, connected together to form systems over increasingly large geographical areas, and have the opportunity to influence significant numbers of drivers. Much work is currently under way to measure the performance of such systems in order to assess the benefits of the investment and justify the further deployment of signs. The results are beginning to identify VMS strategies that yield the best returns. They have already provoked proposals for further integration of VMS with other information systems, and are highlighting institutional issues relating to sign control. This paper summarises these results and the emerging conclusions from the work View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The traveller information system of Finnish National Road Administration

    Publication Year: 1994 , Page(s): 5 - 9
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (228 KB)  

    It is contended that traveller information should be a natural everyday service for the road users offered by Road Administration. The idea is to tell the road users the quality of the service of the road network at a given time. Traffic volumes, average speeds, road weather, road maintenance, accidents they are just different aspects of the service level and in many ways entangled together. All of them must be told about but in the way that road users find it relevant for them and easy to understand. A suitable way of describing the service level for an individual is to recommend the optimum route according to the present and forecast service level and to estimate the travel time of that route, but also some common remarks of the present and forecast service level can be given. In addition, during the trip the road users must be informed if the service level changes so that it affects the travel time or the travel comfort. The article concerns plans for such a system in Finland View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Speed violation deterrent system

    Publication Year: 1994 , Page(s): 119 - 122
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (200 KB)  

    In summer 1993 Travers Morgan undertook a feasibility study into a revolutionary method of speed deterrent which utilises the latest techniques in machine vision to identify vehicle speed and display violation details to the road user. The purpose of the study was to test the robustness of emerging machine vision techniques, its suitability as a potential enforcement tool and to monitor driver behaviour when presented with real time violation details View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic traffic management systems on the ring road of Amsterdam

    Publication Year: 1994 , Page(s): 150 - 155
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (308 KB)  

    In the region around Amsterdam, the policy of the government is to reduce traffic and to optimise the traffic systems in such a way that the infrastructure is used near the optimum. With the plans for the near future the Amsterdam region will get new systems that will operate automatically and in coordination with each other. The systems include: the motorway control and signalling system (MCSS), ramp metering on the slip roads of the motorways, main line metering, variable message signs, lanes for particular users only, and incident management. Some of them are almost completed, others are in the pilot phase and some are in the planning. The existing traffic control systems of the tunnels are integrated parts of the MCSS View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Carmarthen Road, Swansea-bus priority within SCOOT

    Publication Year: 1994 , Page(s): 81 - 88
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (452 KB)  

    The traffic signals in this area were controlled by West Glamorgan County Council's urban traffic control system using fixed time plans which were several years old. Although some additional capacity might be gained from the introduction of new timings, it was assessed that significant additional capacity could only be achieved by introducing SCOOT control to the region. The prime objective of this pilot study was to assess whether selective detection and SCOOT operation could be integrated without modification or development of the traffic signal controller software or the SCOOT system View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Results of the Cambridge experiment in congestion management

    Publication Year: 1994 , Page(s): 42 - 45
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (332 KB)  

    The issue of road-use pricing as an effective means of both managing road traffic demand and raising additional revenue for road construction is now back on the political agenda of many European governments, including that of the UK. It is clear that in many cases the collection of road-use charges through “stop-and-pay” manually-operated toll-plazas is unacceptable due to the sheer size of the plazas required and the delays caused to traffic. Electronic means of toll-collection from vehicles travelling at speed, using small communications devices in the vehicle, have been demonstrated in the UK and elsewhere. However, the performance of these systems is currently less than ideal for large-scale implementation. The ADEPT (Automatic Debiting and Electronic Payment for Transport) project has developed a new generation of road-use pricing technology, incorporating an `intelligent' communications transponder and smartcard in the vehicle for automatic non-stop payment. This paper outlines the design of this system and describes its use to demonstrate the principles of congestion metering in urban areas. Also, a brief description of the other planned applications within the ADEPT project are presented View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Development of an instrumented vehicle for traffic and safety assessment

    Publication Year: 1994 , Page(s): 115 - 118
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (252 KB)  

    In recent years there has been an increase in the development of in-vehicle systems technology and an increased availability of portable office equipment capable of being adapted for in-vehicle use. These advances in technology can make available to the driver both business and travel related information. Information would be typically presented on a visual display fitted to the vehicle dashboard and may be supplemented with an audible message. The requirement to assess driver interaction with a wide range of information systems, and vehicle control aids, in both urban and inter-urban situations has prompted TRL to develop an instrumented vehicle. The vehicle may be fitted with systems to be studied, and used to collect data on driver behaviour in test track or road based field trials. The authors outline instrumentation development, and describe the instrumented vehicle and capability demonstration View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • CELTIC bus priority in Lyon

    Publication Year: 1994 , Page(s): 77 - 80
    Cited by:  Papers (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (232 KB)  

    In this paper, the microscopic simulator SITRA-B+ is used in order to analyze the impact of a bus priority strategy in Lyon. That strategy which corresponds to the requirements of the Lyon authorities is developed and coded in compatibility with the microscopic simulator. An assessment scenario is defined and the strategy tested for various configurations View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Active bus priority in SCOOT

    Publication Year: 1994 , Page(s): 73 - 76
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (264 KB)  

    Active bus priority at traffic signals controlled by traffic-responsive Urban Traffic Control (UTC) systems is being developed within the DRIVE II project PROMPT. This paper describes the development of a version of SCOOT, which is to be tested in field trials in London and Southampton. The new version of SCOOT is designed to take information about the presence of buses either from a selective vehicle detector with a transponder fitted to each bus, as in London, or from an automatic vehicle location system as in Southampton. In London, SCOOT will provide both central and local control of bus priority, and in Southampton all bus priority will be provided centrally. The SCOOT kernel software has been developed to incorporate bus priority, and simulation results to date suggest that bus priority in a coordinated network controlled by SCOOT is practicable View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Results of the Tristar AID system obtained from 3 field experimentations

    Publication Year: 1994 , Page(s): 168 - 171
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (240 KB)  

    Tristar is an automatic incident detection system based on image processing techniques. Images are provided to the system by video cameras monitoring the traffic along the motorways. Outputs are alarms triggered when an incident is detected or traffic measurement values. The system is also known as the local module of the INVAID System. Tristar is an issue of the DRIVE I project named INVAID. It is also one of the two key-components of the INVAID II project of the DRIVE II programme; the other one is the Central System developed by OCT. The Tristar system has been evaluated mainly in 3 places: A8 near Nice (Site S1), A43 near Lyon in France (Site S2), Antwerp Ring in Belgium (Site S3). Field trials have been supported and led by the motorway companies in charge of these networks: Escota in Nice, Area in Lyon, the Department of Transport in Antwerp. This paper reports and discusses the results obtained during field trials carried out in these three test-beds View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Comparative assessment of conventional and new incident detection algorithms

    Publication Year: 1994 , Page(s): 156 - 159
    Cited by:  Papers (2)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (272 KB)  

    Automatic incident detection techniques are currently benefiting from progress in the application of new information and communications technology to traffic management. Recently, other technologies, such as video image processing, have been investigated. Furthermore, new theories are now also explored in the context of incident detection. Choosing an adapted system/algorithm becomes a complex task. Thus, a serious investigation of the strengths and limitations of conventional and new algorithms appears necessary. The paper focuses on this aspect. Investigations reported are undertaken in the contest of the gradual implementation of a monitoring system on the south part of the "Boulevard Peripherique" of Paris View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Congestion analysis and diagnosis in UTC networks

    Publication Year: 1994 , Page(s): 172 - 176
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (224 KB)  

    In the UK, networks of signals in urban areas are usually controlled by an Urban Traffic Control (UTC) system based either on fixed time plans derived using TRANSYT or by the traffic responsive system SCOOT. This paper describes simulation studies carried out to gain an understanding of the mechanism by which congestion spreads, and to investigate those situations and circumstances where SCOOT in its normal mode of operation loses effectiveness. Based on the result of the simulation a new measure of congestion has been developed called `Wasted Capacity' derived from SCOOT data View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An update on road traffic monitoring in the United States

    Publication Year: 1994 , Page(s): 111 - 114
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (268 KB)  

    The author (1992)gave an overview of traffic monitoring programs in the United States. In this paper the author focuses on recent trends and changes to the programs View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.