Figure 1. Two- way synchronization for even phase difference

From

Phase Optimization Procedure for Two-Way Synchronization of Fixed Traffic Signals on an Urban Passageway in Washington City (USA)

Ardavan Shojaeyan, Ali Kargar, Mahmoud Reza Keymanesh

American Journal of Civil Engineering and Architecture. 2017, 5(3), 71-84 doi:10.12691/ajcea-5-3-1