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Evaluation of Detection and Signing Systems for High Speed Signalized Intersections

Prahlad D. Pant

出版	University of Cincinnati, Department of Civil and Environmental Engineering, 1996
URL	http://books.google.com.hk/books?id=JHksAQAAMAAJ&hl=&source=gbs_api

註釋

The effects of two dynamic signs that begin to flash a few seconds before the onset of the yellow interval and a static sign that flashes all the time were examined at tangent and curved approaches to rural, high speed signalized intersections. The dynamic signs included (a) a PTSWF (prepare to stop when flashing) sign, and (b) a FSSA (flashing symbolic signal ahead) sign with green, yellow, and red circles. The static sign was a CFSSA (continuously flashing symbolic signal ahead) sign with the three circles. The effects of these signs on vehicular speeds at different segments of the intersection approach including the dilemma zone were analyzed as were the vehicle conflict rates and the responses from the drivers' surveys.