ROAD SAFETY PERFORMANCE
Author(s): M.Manoj, P.Jaya Prakash, P.Deenashkumar
Abstract: The lack of traffic signal conspicuity is often cited as a contributing factor by drivers who are
involved in accidents at intersections. As such, increasing the conspicuity of traffic signals should
lead to improved safety performance. This paper describes a project to determine the road safety
effectiveness associated with improved signal conspicuity. The project described in this paper was
conducted in two phases. Phase 1 investigated the impact of improved signal head design on road
safety performance. In Phase 2, the conspicuity of standard signal backboards was increased by
adding yellow diamond grade reflective tape along the outer edge. This was done in an attempt to
frame the signal heads and make them more visible to motorists, with the intent of improving
intersection safety. A time-series evaluation was completed to investigate the effectiveness of the
improvements to the traffic signal on road safety performance. The use of comparison groups,
prediction models and an Empirical Bayes analysis technique was used to account for the
problematic confounding factors associated with road safety evaluation and ensure that the results
are reliable. Anecdotal information concerning the effectiveness of the improved traffic signals
were also collected and evaluated. The British Columbia Ministry of Transportation has partnered
with the Insurance Corporation of British Columbia on a multi-year program to upgrade all
primary signal displays to the improved design. This paper quantifies and describes how the
improved signal design and the use of diamond grade yellow tape at signalized intersections can
provide cost-effective road safety benefits.
Project ID: DLAP-29
Paper Stream: Computer Science & Engineering
College Name:NARASU'S SARATHY INSTITUTE OF TECHNOLOGY-OMALUR
Published Date: 2021-03-22 12:48:53
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