UTC systems are typically implemented in dense urban road networks area over which traffic conditions are monitored by loop detectors and controlled by traffic signals. However the system is also suitable for small networks. It is particularly effective where traffic flows are unpredictable e.g. random changes in traffic patterns such as often occur in popular tourist areas.

When junctions are some distance apart (more than about 1 km) isolated junction control using a system such as MOVA may be more appropriate. Other site-specific factors would also influence the decision on method of control. MOVA (Microprocessor Vehicle Actuation) is a modern microprocessor technology for isolated intersections to optimise signal timings.

If congestion is reduced sufficiently to allow increased speed, risk of accidents will increase. There are no specific safety features unique to most UTC systems. However, longer inter-greens for pedestrians will be effective for safety, so that pedestrian facilities can be required. In principle information from pedestrian detectors could be included in the optimisation process for traffic responsive systems.