Adaptive signal control systems reduced vehicle stops by 28 to 41 percent; improve safety.
Los Angeles,California,United States; Broward County,Florida,United States; Oakland County ,Michigan,United States
- Freeway, Incident, and Emergency Management, and Electronic Toll Collection (ETC)
- Arterial Management
- Traveler Information Systems
- Advanced Public Transportation Systems
- Commercial Vehicle Operations (CVO)
- Cross-Cutting Technical Issues
- Cross-Cutting Institutional Issues
Adaptive signal control systems use algorithms that perform real-time optimization of traffic signals based on current traffic conditions, demand, and system capacity. Adaptive control software adjusts traffic signal splits, offsets, phase lengths, and phase sequences to minimize delay and reduce the number of stops. The extent of benefits depends on several factors including the number and spacing of intersections, the size of study area, demand patterns, levels of nonrecurring congestion, and the type of adaptive control.
Adaptive signal control systems improve coordination and reduce the number of stops, which decreases the rear-end crash rate. In Los Angeles, Broward County, and Oakland County adaptive signal control reduced the number of stops by 28 to 41 percent .
Author: Joseph Sussman, et al. (MIT)
Published By: Federal Highway Administration, U.S. DOT
Source Date: December 2000
EDL Number: 13316
Other Reference Number: Report No. FHWA-OP-01-006URL: http://ntl.bts.gov/lib//jpodocs/repts_te//13316.pdf
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Typical Deployment Locations
traffic signals, adaptive signals