Research Article
May 1980
Freeway Surveillance and Control in Chicago Area
Publication: Transportation Engineering Journal of ASCE
Volume 106, Issue 3
Abstract
The Chicago area expressway network features the world's first and largest freeway traffic surveillance and control system. From pioneer experiments with detector/telemetry/computer monitoring of traffic flow, and the development of entrance ramp metering, the real-time system now covers 110 miles (177 km), with 1,600 detector locations and 70 controlled ramps, all centrally supervised. This paper describes the surveillance and control system and its basic components, discusses the implementation and operational experience to date, and relates the use of electronic traffic aids to overall urban freeway traffic management efforts. The Chicago area case study demonstrates successful progress towards reducing congestion, improving flows, increasing safety, conserving energy, expediting emergency responses, and providing motorist aid and imformation.
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Published In
Transportation Engineering Journal of ASCE
Volume 106 • Issue 3 • May 1980
Pages: 333 - 348
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: May 1980
Published online: Feb 5, 2021
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Authors
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Joseph M. McDermott, M.ASCE
Dir., Traffic Systems Center, Illinois Dept. of Transportation, Div. of Highways, Dist. 1, Oak Park, Ill.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.