Identify one type of traffic signal control method.

Time-based control is a method of traffic signal control where the signals operate in a predetermined cycle. This approach does not rely on real-time traffic conditions or vehicle presence, but rather on fixed intervals that are set according to expected traffic patterns and flow.

This method is often used in environments where traffic demand is relatively predictable, allowing for efficient management of roadway systems without requiring extensive real-time data analysis or vehicle detection. The fixed timing can be adjusted during peak and off-peak periods to optimize traffic flow, but it does not adapt dynamically to actual traffic situations, which can sometimes lead to inefficiencies if traffic conditions change unexpectedly.

The effectiveness of time-based control hinges on the accurate assessment of typical traffic volumes and patterns, which can help minimize delays and improve overall safety at intersections. This approach is in contrast to other control methods that are more reactive or vehicle-specific, which may adjust signals based on immediate traffic conditions or incidents.