Headways and gap acceptance characteristics of drivers at signalised intersections in the phoenix metropolitan area were analysed using time-lapse photographic techniques. Simultaneous operation of two cameras allowed for the recording of the particular movement involved and for the recording of license plates. Out-of-state vehicles have headways significantly longer than in-state vehicles when the vehicles in question are at the beginning or near the end of the queue. When the out-of-state vehicles are located in the center of the queue, their headways approach those of the in-state registrants. For left turning vehicles, there is no significant difference between the gap acceptance characteristics of in-state or out-of-state vehicles. Vehicles registered in the states which do not have the right turn on red law make little use thereof. All categories of drivers had similar gap acceptance characteristics when they did make use of the law. A sign indicating the legality of the movement increased its usage by all categories of drivers. /author/.
Samenvatting