What does the controller type affect in terms of minimum green time?

The controller type significantly influences the timing schemes used for traffic signals, including the minimum green time for various traffic movements. Different controller types may have varying capabilities and configurations that determine how traffic is managed at intersections. For instance, advanced controllers may allow for dynamic adjustments based on real-time traffic conditions, which can optimize the minimum green time for specific phases according to traffic demand.

In contrast, simpler or outdated controllers might only allow fixed timing schemes, which do not adjust based on current traffic conditions. This directly affects how effective the traffic flow is managed at an intersection. By employing the appropriate controller type, engineers can design more efficient timing plans that improve safety and reduce congestion.