What are standard safe times for lights going from green to red for a given speed limit?

Rule of thumb. If the light has been green for a while, expect it to change and check your speed. You need to know how much room you have to stop safely. Find a point of no return. Once you cross that point you will have to through the light as long as it is yellow. You should have plenty time between the green light and the red light to stop. The time limit varies with each intersection depending on if the light is set on a timer or if it is on a trip.

First answer by T.bradford. Last edit by T.bradford. Contributor trust: 103 [recommend contributor]. Question popularity: 5 [recommend question]