METHOD AND DEVICE FOR CONTROLLING BUS PRIORITY SIGNAL

摘要

PROBLEM TO BE SOLVED: To perfectly execute the preferential control of a bus by following the bus to the neighborhood of the intersection of the bus at the time of judging the bus to turn to the right as the result of photographing the route number of the bus from the rear side of the bus, to execute signal control. ;SOLUTION: First of all, a video camera 1 is set in the state of photographing a destination display part at the rear part of the bus from behind the bus traveling on a road in a zooming state and a window for fetching the route number is formed at an image processor 2. An image forming device 2 reads the route number of the bus from an image from the video camera in a zooming state and at the time of being switched to a wide angle state, automatically tracks the bus. At the time of judging whether the bus is to turn to the right or not from the result of pattern matching from the processor 2 and judging it to be a bus to turn to the right, a controller 3 switches the video camera 1 from zooming to a wide angle and controls a signal controlling device 4 according to the advancing situation of the bus to extend the green period of a signal lamp of an advancing lane.;COPYRIGHT: (C)1999,JPO