Design of a Traffic Signal Controlled Intersection

The highway intersection and traffic flows shown in Figure 25.1 are to be controlled by the traffic signal installation and the traffic management measures shown in Figure 25.2. All traffic lanes have a width of 3.25 m, turning vehicle radii 20 m, waiting spaces for right turn vehicles 2 and the average passenger car unit/vehicle ratio is 1.2. Intergreen periods are 4s and 10s per cycle, starting and end lost times total 2s per phase. Two phase operation is to be used. Calculate the optimum cycle time and the actual green times. Open image in new window Figure 25.1 Open image in new window Figure 25.2 Traffic management proposals