A STUDY OF CLEARANCE INTERVALS, FLASHING OPERATION, AND LEFT-TURN PHASING AT TRAFFIC SIGNALS. VOLUME 2. CLEARANCE INTERVALS
This volume describes a study to develop recommendations for two questions regarding clearance intervals: (1) should a uniform yellow interval be used throughout a metropolitan area, and (2) when should all-red clearance intervals be used and how long should they be. The study procedures include a literature review, a review of state laws, questionnaires to public officials and to drivers, analytical models of traffic flow, and field studies. The uniform yellow was found not to be particularly beneficial.
- See also Volume 1, PB81-105587 and Volume 3, PB81-105603 Also available in set of 4 reports PC E17, PB81-105579.
TJKM Transportation Consultants710 South Broadway Suite 302
Walnut Creek, CA USA 94596
Washington, DC USA 20590
- Benioff, B
- Dock, F C
- Carson, C
- Publication Date: 1980-5
- Pagination: 156 p.
- TRT Terms: Clearance interval (Traffic signal cycle); Flashing traffic signals; Highway traffic control; Intersections; Laws; Left turns; Mathematical models; Metropolitan areas; Questionnaires; Red interval (Traffic signal cycle); Reviews; State government; Time intervals; Traffic engineering; Traffic flow; Traffic safety; Traffic signals; Urban areas; Urban transportation; Yellow interval (Traffic signal cycle)
- Subject Areas: Highways; Law; Operations and Traffic Management; I73: Traffic Control;
- Accession Number: 00326364
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: FHWA-RD-78- 47 Final Rpt.
- Contract Numbers: DOT-FH-11-8783
- Files: NTIS, TRIS, USDOT
- Created Date: Dec 30 1981 12:00AM