What is the primary function of a controller assembly in traffic signals?

The primary function of a controller assembly in traffic signals is to manage the overall operation of the traffic signal system. It is responsible for executing the timing cycles that determine when traffic lights change from red to green, yellow, and back to red. The controller ensures that signals function harmoniously to facilitate the smooth flow of traffic through intersections, prioritize certain types of traffic (like emergency vehicles or public transport), and adapt to various traffic situations as needed.

This function is crucial in preventing collisions, optimizing traffic movement, and improving the overall efficiency of the road network. By handling the operational aspects of the signals, the controller assembly plays a vital role in traffic management and safety. While other options address various components of traffic systems—such as managing pedestrian signals and detecting violations—none encapsulate the broad operational responsibility of the controller assembly as effectively as managing the operation of traffic signals does.