AREA TRAFFIC CONTROL: A COMPARATIVE STUDY OF THE EFFECT OF SCAN PERIOD ON CONTROL PERFORMANCE
This paper analyses the DOE's requirements for a one-second scan period in area traffic control by computer, in regard to both system security and traffic control parameters. It is shown that although the one-second scan period could have advantages for the security of the system, it has no great influence on the control parameters of a traffic system operated on a fixed-time basis, e.g. Transyt. Although the data transmission system can be operative on a one-second scan rate for system security, application programs such as the output of traffic signal timings need only to be updated once every two seconds. This method saves a large amount of the processor time and enables smaller computers to be used for atc implementation. /Author/TRRL/
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00410683
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Corporate Authors:
Printerhall Limited
29 Newmart Street
London W1P 3PE, England -
Authors:
- Al-Khalili, A J
- Publication Date: 1976-6
Language
- English
Media Info
- Features: Figures; References;
- Pagination: p. 252
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Serial:
- Traffic Engineering & Control
- Volume: 17
- Issue Number: 6
- Publisher: Hemming Group, Limited
- ISSN: 0041-0683
- Serial URL: http://www.tecmagazine.com/
Subject/Index Terms
- TRT Terms: Area traffic signal control; Computers; Data communications; Digital computers; Pretimed traffic signal controllers; Time; Traffic control; Traffic delays
- Uncontrolled Terms: Parameters; Scaling
- ITRD Terms: 669: Area traffic control; 8652: Data transmission (telecom); 9010: Delay; 8673: Digital computer; 577: Fixed time (signals); 5414: Time
- Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;
Filing Info
- Accession Number: 00142101
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Report/Paper Numbers: Serial
- Files: ITRD, TRIS
- Created Date: Jun 17 1977 12:00AM