Which of the following describes a function of minimum green time at an intersection?

Minimum green time at an intersection is primarily designed to ensure that vehicles have enough time to clear the intersection safely and efficiently. This function is critical for managing traffic flow, as it allows enough time for vehicles, particularly those on the major road, to enter and clear the intersection before the light changes to red. By providing this guaranteed time for vehicles to progress through the intersection, it helps to maintain a smooth flow of traffic and minimizes the risk of congestion or collisions that could arise if vehicles are unable to clear the intersection in time.

While other functions related to traffic signal timing are important, such as providing a buffer period for pedestrians or reducing wait times for minor streets, the fundamental purpose of minimum green time is specifically focused on facilitating the movement of vehicles.