Evaluation Of The Flashing Yellow Arrow Permissive Left Turn Indication Field Implementation

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Evaluation of Traffic Signal Displays for Protected/permissive Left-turn Control

Author: Christopher Lynn Brehmer
language: en
Publisher: Transportation Research Board
Release Date: 2003
Evaluation of the Flashing Yellow Arrow Permissive-only Left-turn Indication Field Implementation

The primary objective of this research was to evaluate the safety of the flashing yellow arrow (FYA) permissive only left-turn indication field installations. The ability of the FYA indication to improve safety was evaluated with respect to crash experience. Findings of the crash analysis were interpreted with respect to other variables such as signal phasing, vehicle flow rates, posted speed limits, and intersection geometry. The scope of this research included all known installations of the FYA prior to the commencement of this research.