Traffic signal coordinated control smooth transition and deviation correction method

The invention relates to a traffic signal coordinated control smooth transition and deviation correction method, which sequentially comprises the following steps of: (1) calculating the difference value P between the current time A and the coordinated control starting time T before entering the coordinated control, adding the transition period phase change value on the current phase green lamp value during the transition period entering if the difference value P is greater than zero, and otherwise, executing the current period phase; and (2) calculating the difference value Q between the current time A and the coordinated control starting time T after entering the coordinated control, executing the current period phase when the difference value Q is zero, subtracting Q from the current phase green lamp value when the difference value Q is in the set value range, and otherwise, adding the transition period phase change value on the current phase green lamp value during the transition period entering. The metho