What does a Freeway Entrance Ramp Control Signal do?

A Freeway Entrance Ramp Control Signal is specifically designed to manage the flow of vehicles entering a freeway. This signal helps to optimize traffic flow by regulating the amount of traffic merging onto the freeway at any given time. By controlling when vehicles can enter, it reduces congestion and enhances safety, particularly during peak travel times when on-ramps can become bottlenecks.

The primary function of such a signal is to create gaps in freeway traffic, allowing entering vehicles to merge more smoothly and safely, which contributes to overall traffic efficiency. Properly timed, the signal can improve the integration of different traffic streams, facilitating a more stable and manageable freeway environment. It is not concerned with traffic exiting the freeway, managing pedestrian crossings, or speed limit indications, all of which fall under other traffic management mechanisms.