In the State of Qatar, there are 127 traffic light signals that are operated by Ashghal Traffic Control Center using Sydney Coordinated Adaptive Traffic System. The rest of the traffic light signals (160) are not linked to SCATS and they are operated based on actuated signal control. As stated by Wael (2019, p.265) in the textbook Global Practices on Road Traffic Signal Control: Fixed-Time Control at Isolated Intersections.
assess the impact of implementing SCATS on traffic delay in Qatar and identify different alternatives to reduce congestion based on the concept of Macroscopic Fundamental Diagram.
