Samenvatting
In Japan, infrared beacons have been introduced and installed in urban road networks since 1993. Therefore we can not only get UPLINK information from each vehicle which has in-vehicle units, but also gather traffic volume as usual. Meanwhile these beacons are arranged around 20m from exit of each direction, so we are able to observe turn of each vehicle. In this paper, in order to use these results for traffic signal control, turns of each vehicle that has in-vehicle unit were collected from UPLINK information and turning rate using traffic demands estimated. (A*)