Signal Timing Optimization and Simulation Analysis of the Jinan Yanshan Interchange Export Intersection

In order to estimate the traffic delay of the Jinan Yanshan interchange west export intersection during evening peak hours, the field measurement was taken to get the simulation parameters of the west export intersection. Several signal timing optimization schemes for the intersection were designed according to Highway Capacity Manual 2010 (HCM2010). After the analysis with VISSIM, the results show that: compared with no signal condition, current signal timing can relieve the road traffic congestion in some sections of the west export intersection, but further optimization is still needed. Also, among the six different signal timing optimization schemes, scheme D performs better than the others, which can dramatically improve the traffic passage efficiency and relieve delay. Therefore, traffic efficiency in the interchange export intersection can be further improved by optimizing the signal timing.