The effects of automatic speed photo-radar enforcements on Taiwanese freeway systems
by Ming-Heng Wang; Cheng-Chen Kou
International Journal of Mobile Network Design and Innovation (IJMNDI), Vol. 5, No. 4, 2014

Abstract: This study investigated the effects of automatic speed photo enforcement (SPE) devices on speed and crash distributions on a major freeway section in Taiwan. The differences of speeds and traffic crash distributions at upstream and downstream sections of four SPE fixed locations were compared. The results indicate that the fixed SPE devices significantly decreased the mean speed at the fixed SPE point and continued for the next two kilometres at both suburban and rural freeway sections. The fixed SPE devices also reduced the number of traffic crashes at the location immediately downstream of the SPE point. However, on the rural freeway sections, the SPE device does not seem to prevent the occurrence of traffic crashes. There was not enough evidence to determine whether the fixed SPE devices would increase the risk of crashes when vehicles are approaching the fixed SPE points.

Online publication date: Fri, 23-Jan-2015

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