When stopping at a traffic light or in a jam, what gap should you leave from the vehicle ahead?
En español: Al detenerse en un semáforo o atasco, ¿qué distancia conviene dejar con el vehículo de delante?
Why this is the correct answer
When stopping you should leave 2-3 metres from the vehicle ahead, which lets you warn them if they roll back, pass them if they stay stopped, and avoid hitting them if you are rear-ended.