TRAFFIC SIGNAL CONTROLLER

PURPOSE:To execute the bus induction control adapted to a traffic state by setting and updating automatically a control constant for the bus induction control, based on each constant value, and executing the bus induction control by setting automatically the running time, based on speed data of a bus passing through in the course of a blue time for executing the bus induction control. CONSTITUTION:A CPU 1 reads each display time, a control constant for an induction control and a running time of a set value and control constant storage part 2 through a port 1, determines a stepping signal internal, and advances a step of a signal control part 3 through a port 3 and brings signal lamp equipments 4, 5 to flickering control successively. Also, the CPU 1 receives a bus sensing signal of each route through port 2, calculates and stores a bus speed and calculates and stores a running time for predicting an intersection passing timing, based on bus speed data. In such a way, it becomes unnecessary to set the control constant for an induction control and the running time, and it is also unnecessary to update a set value, therefore, labor for investigating the traffic volume and setting the constant can be saved. Also, by updating momentarily a running time constant, the bus induction control corresponding to a traffic state always is executed and safety and smoothness of the traffic are maintained.