A common function of a traffic signal controller is to manage what aspect of traffic?

The role of a traffic signal controller primarily revolves around managing signal timing sequences. This function is crucial for ensuring that traffic lights change at the appropriate intervals to optimize the flow of vehicles and pedestrians. The controller processes data from various sensors and input systems to determine the best timings for green, yellow, and red lights, based on real-time traffic conditions.

Signal timing sequences help minimize congestion, improve safety for all road users, and enhance the overall efficiency of the transportation network. Although factors like volume of traffic can influence how those sequences are determined, the core function itself is to control how long each signal phase lasts to effectively manage the traffic flow at intersections.

In contrast, while speed limits, volume of traffic, and weight restrictions are important aspects of traffic management, they are typically enforced by other systems or regulations rather than being a primary function of traffic signal controllers.