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Mode of Flashing for Malfunctioning Traffic Signals.
- Source :
-
Journal of Transportation Engineering . Jul2011, Vol. 137 Issue 7, p438-444. 7p. - Publication Year :
- 2011
-
Abstract
- This paper presents the analysis of traffic operations at 34 instances of yellow/red malfunction flash and nine instances of red/red malfunction flash in the Atlanta area. Malfunction flash occurs when a traffic signal's malfunction monitoring unit detects a problem and automatically initiates a flashing operation. Many of these instances were during periods of high demand, and a high level of driver confusion was documented. The stopping rate of major-street through drivers (i.e., those facing a flashing yellow signal and not required to stop) exceeded 75% at some yellow/red flash intersections. This eliminates many of the operational benefits that yellow/red flash is generally assumed to have over red/red flash and may create a safety hazard. To predict major-street (flashing yellow) stopping rates, logit models were developed. At red/red flash intersections, 10-20% of drivers did not stop before entering the intersection; many of these drivers crept through or 'piggybacked' with another vehicle. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0733947X
- Volume :
- 137
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- Journal of Transportation Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 62275251
- Full Text :
- https://doi.org/10.1061/(ASCE)TE.1943-5436.0000236