How long is a red light generally?

[McSpencer]

At different times and locations, the maximum duration of traffic lights varies. The duration of traffic lights is related to road conditions and traffic volume. Generally, it is determined by the local traffic and pedestrian flow, so the duration of traffic lights differs from place to place. Relevant information about traffic lights is as follows: 1. Introduction: Traffic lights are signals that direct traffic, usually consisting of red, green, and yellow lights. A red light means stop, a green light means go, and a yellow light means caution. 2. Control methods: The most basic control method is fixed-time control at a single intersection. Line control and area control can also use fixed-time control methods, also known as static line control systems and static area control systems.