4.2. Monitoring and enforcement systems
Technological advancements allow transport authorities to continuously monitor transport facilities, sense disturbances in traffic flow and identify traffic violations. Singapore has set up an Intelligent Transport Systems (ITS) centre to enhance the efficiency of its land transportation system. It operates 24 hours every day, keeping track of traffic flow based on information gathered by the various ITS on expressways, major arterials and intersections. Some of the monitoring and enforcement systems are shown in Fig. 6.