SPACE AVERAGE SPEED AND TRAFFIC VOLUME ESTIMATING METHOD, POINT TRAFFIC SIGNAL CONTROL METHOD, AND TRAFFIC VOLUME ESTIMATING AND TRAFFIC SIGNAL CONTROLLER CONTROL DEVICE

摘要

PURPOSE: To control a traffic signal controller by obtaining an arrangement pattern of vehicles in a measurement section and estimating a space average speed and a traffic volume in accordance with these data and using this estimated traffic volume. ;CONSTITUTION: Video information picked up by video cameras 31 and 32, which photograph the movement of a vehicle group above an intersection so that this movement can be overlooked, is transmitted to a traffic volume estimating and traffic signal controller control device main body 33, and the state of a traffic signal controller 41 is discriminated by an input/output part 40, and the video signal of one of video cameras 31 and 32 is selected by a video signal selecting part 34, and a video data A/D conversion part 35 is used to convert a two-picture portion of the selected signal to digital data. Only moving objects in the area are extracted by frame difference in a picture processing part 38, and positions from the intersection are measured, and the number of vehicles and spaces between vehicles are obtained to obtain the arrangement pattern of vehicles. A data processing and control part 39 obtains the forecasted traffic volume from this vehicle arrangement pattern to control the traffic signal controller 41.;COPYRIGHT: (C)1994,JPO&Japio