Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Engineering
Preferences For Permitted And Protected Left-Turn Signal Displays, Alexander Drakopoulos, Richard W. Lyles
Preferences For Permitted And Protected Left-Turn Signal Displays, Alexander Drakopoulos, Richard W. Lyles
Civil and Environmental Engineering Faculty Research and Publications
Twenty-two different signal displays for permitted and protected left turns were evaluated from a driver comprehension perspective. The objective was to identify which alternate signal displays used to convey the same left-turn message to the driver are better comprehended and therefore recommended for use in the field. Protected displays compliant with the Manual on Uniform Traffic Control Devices were found to be better comprehended than certain noncompliant displays; however, some noncompliant permitted displays were found to outperform their compliant counterparts. Regional comprehension biases are nonexistent for the most part, regardless of display compliance with the Manual on Uniform Traffic Control …