Group chain type anti-blocking control phase difference optimization method for highly-associated intersection in high load state

The invention discloses a phase difference optimization method for group chain type anti-blocking control of a high-load-state strong-association intersection, and belongs to the field of traffic signal control. The method comprises the following steps: S1, establishing a queuing dissipative wave model based on electronic police data; s2, establishing a strong association intersection group traffic flow operation feature expression model in a high load state; s3, dynamically describing driving-driving-out spatio-temporal evolution characteristics of the strongly-associated road sections based on a vehicle time accumulative graph; s4, establishing a strong association intersection group chain type anti-blocking control phase difference optimization model; s5, determining a one-way chain type anti-blocking control phase difference; and S6, determining a two-way chain type anti-blocking control phase difference. According to the method, the influence of the upstream intersection driving-in capacity, the downstre