Patent ID: 8717195

Claim:
A traffic signal control method comprising determining a minimum green interval, wherein the traffic signal control method comprises: determining positions of a critical point for a traffic flow according to an engineering design for a road channelization of an intersection; determining a maximum clearing distance s i (m) of a traffic tail unit released by a green light i and a minimum entry distance s j (m) of a traffic head unit released by a green light j in conflict with the green light i; calculating a maximum clearing time Max{t i } of the traffic tail unit released by the green light i and a minimum entry time Min{t j } of the traffic head unit released by the green light j; calculating a minimum green interval I ij =A+Max{t i }−Min{t j }, wherein A is the yellow time; and determining a control scheme for the intersection according to the minimum green interval and controlling an operation of a signal light according to the control scheme.