Application and Suitability of Signal Coordination

The aim of this study was to apply signal coordination for eight signalized intersections in three different locations and compare the performance before and after the adjustments. To achieve the above objective, we collected traffic data from the sites and from the ministry of works. VISSIM software was used for evaluation and analysis of intersections. SYNCHRO software was used for finding the best timing plan alongside manual solution (trial-and-error). We got a high delay and bad level of service for all of the selected intersections before applying the signal coordination. Then the improvement strategy of optimizing signal timing and coordination was applied to the traffic flow in the study areas. Finally, this improvement was found to have good effect on the level of service and delays, where we reduced the delay in all the locations by approximately 34% and improved the level of surface from F to E on Estiqlal highway and 16th December Highway and from D to C on Tubli highway. The strategies and design from this research can be implemented on the selected locations and serves as a benchmark for other similar studies in the region.