Performance Assessment of Anloga Signalized Intersection on the 24^th February Road, Kumasi-Ghana Using Micro Simulation Model

摘要

Signalized intersections are critical elements of an urban road transportation system and maintaining these control systems at their optimal performance for different demand conditions has been the primary concern of the traffic engineers. Traffic simulation models have been widely used in both transportation operations and traffic analyses because simulation is safer, less expensive, and faster than field implementation and testing. This study assessed performance measures at the Anloga signalized intersection using micro simulation models in Synchro/SimTraffic. Traffic, geometric and signal control data including key parameters with the greatest impact on the calibration process were collected on the field. At 5% significant level, the Chi square test and t-test analyses revealed that headway had a strong correlation with saturation flow compared to speed for both field and simulated conditions. It was concluded that changes in phasing plan with geometric improvement would improve upon the intersection’s level of service. An interchange therefore should be constructed at the Anloga intersection to allow free movement of vehicles thereby minimizing congestion and accident occurrences.