What is the definition of initial green time in traffic signal timing?

Initial green time refers to the minimum duration that a traffic signal displays a green indication to allow vehicles to clear the intersection safely and efficiently at the beginning of a signal phase. This timing is crucial for managing traffic flow and minimizing congestion, as it provides sufficient time for vehicles to enter the intersection and ensure that they can move through without obstruction.

This concept is essential in traffic signal timing because it helps accommodate varying traffic conditions. While the term refers to the minimum green time, it is also influenced by factors such as traffic volumes, road conditions, and the presence of pedestrians.

In contrast, maximum green time relates to the longest period the light can stay green, whereas the duration when vehicles are cleared focuses more on how long after the green light changes into a yellow or red the intersection remains clear. The time before a signal resets refers to the entire cycle of the traffic signal, which includes not just the green phase but also yellow and red phases.