01366474

Component

Vehicle detection has the potential to improve how drivers interact with change intervals to minimize the potential hazards associated with dilemma zones at signalized intersections. The dilemma zone described extensively throughout the literature refers to the area where drivers experience difficulty with stop/go decision making when presented a circular yellow indication. Incorrect decisions lead to increased rear end crashes and more severe angle crashes. To evaluate the potential for a particular configuration of point and space sensors to mitigate the influence of dilemma zones on safety, observations were made at a high-speed signalized intersection providing advanced vehicle detection under both conditions. Results showed that space sensors can reduce dilemma zone incursions and shift drivers downstream of the dilemma zone where the stop/go decision is more easily determined.

This paper was sponsored by TRB committee AHB50 Traffic Control Devices

01362476

12-1143

English

13p

2012

Transportation Research Board 91st Annual Meeting

Digital/other

Figures; References; Tables

Automatic vehicle detection and identification systems; Dilemma zone; Sensors; Signalized intersections; Traffic safety; Yellow interval (Traffic signal cycle)

Data and Information Technology; Highways; Operations and Traffic Management; I71: Traffic Theory; I73: Traffic Control

Transportation Research Board Annual Meeting 2012 Paper #12-1143

TRIS, TRB

Feb 8 2012 5:00PM