Task 1. Literature Review
Task 2. Static and Dynamic Reviews: Licensed drivers will be recruited for computer-based static evaluations and simulator test to determine how well they understand and react to different displays of the flashing yellow arrow and change interval indications.
Task 3. Field Assessment: The research team will evaluate real-world applications of the three and four section heads for PPLT. Data will be presented in a case study format.
Task 4. Experimental Results and Data Analysis: Statistically analyze results from the static and dynamic reviews.
Task 5. Draft Final Report and Final Report
It is possible to operate the flashing yellow arrow in PPLT in existing three section heads by installing a bi-modal head that allows the yellow left turn arrow to operate in flashing (permissive) and steady (change) mode. It is not known how well drivers will respond to this application of the three section head and whether it provides adequate notice that the permissive left-turn is ending.