CHICAGO AREA EXPRESSWAY SURVEILLANCE AND CONTROL: FINAL REPORT
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 105 miles (169 km), with 1600 detector locations and 54 controlled ramps. This report describes the surveillance and control system and its basic components, documents the implementation and operational experience, evaluates ramp control effectiveness, assesses costs and benefits, and relates the use of electronic traffic aids to overall urban freeway traffic management efforts. The Chicago area case study illustrates successful progress towards reducing freeway congestion, improving flows, increasing safety, expediting emergency responses, and providing motorist aid and information.
- Expressway Surveillance Report 27.
Illinois Department of TransportationBureau of Materials and Physical Research
126 East Ash Street
Springfield, IL USA 62704-4766
Washington, DC USA 20590
- Publication Date: 1979-3
- Pagination: 180 p.
- TRT Terms: Benefit cost analysis; Computers; Detectors; Evaluation; Expressways; Freeways; Highway traffic control; Management; Measures of effectiveness; Monitoring; Ramps; Real time control; Surveillance; Systems engineering; Telemetry; Traffic congestion; Traffic control; Traffic engineering; Traffic flow; Traffic safety; Transportation operations; Urban areas
- Uncontrolled Terms: Effectiveness; Systems management; Transportation management
- Old TRIS Terms: Real time operation
- Subject Areas: Administration and Management; Highways; Operations and Traffic Management;
- Accession Number: 00313180
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-IL-ES-27
- Files: NTIS, TRIS, USDOT, STATEDOT
- Created Date: May 7 1980 12:00AM