Abstract: A mathematical model for calculating the average delay of vehicles in each lane was established according to the running characteristics of vehicles between a hook-turn intersection and adjacent conventional intersection. Taking the minimum average delay of vehicles as the objective function and the cycle length and green time as the constraints, a coordinated optimization model was established. Finally, taking two adjacent intersections in Suzhou as an example, the established method was tested on the collected data. The hook-turn intersection was set up and the signal coordination between it and the adjacent intersection was established as the improvement method. The vehicle delay in the improvement scheme and the current scheme were compared and analyzed using VISSIM software. Experimental results show that the coordinated optimization model of signals between hookturn intersections and adjacent intersections can effectively improve the traffic capacity of intersections, especially the capacity of vehicles on straight roads, and reduce the average delay of vehicles.
 

Key words: traffic engineering；signal control, hook-turn；average delay model；signal coordination