In which scenario should you never stop at an intersection?

Stopping at an intersection when the light has changed to red is not the appropriate action because, by that point, you are expected to yield to the rules of traffic flow which dictate that vehicles must stop for red lights. If you were to stop after the light has already turned red, you would be causing an obstruction to vehicles behind you that are still in motion, which could lead to dangerous situations, such as rear-end collisions.

The key factor here is understanding the flow of traffic and the appropriate response to traffic signals. A red light indicates that all vehicles must come to a complete stop. In contrast, proceeding through a green light signifies that the intersection is clear and you have the right of way, allowing you to cross safely. Hence, stopping at a red light is not just an indication of caution—it's a legal requirement to ensure the safety of all road users.