Official Driving School Segment 1 Practice Test

Why should you stop at least one car length behind the vehicle in front of you?

To improve fuel economy

To increase air distance

To avoid a rear end collision, to be able to get around a stalled vehicle, and to have an escape from carjackers

Keeping a gap of at least one car length behind the vehicle in front creates a safety buffer that gives you time to react and room to stop. If the lead car brakes suddenly, that space lets you begin braking sooner and reduces the risk of a rear-end collision. It also provides room to steer around a stalled vehicle in your lane without curving into oncoming traffic, lowering the chance of a crash. Additionally, having that extra space can help you maneuver to escape a dangerous situation, such as someone trying to block your path, by giving you a path to move or accelerate away. In short, this distance keeps you safer by allowing time, space, and options to handle normal and unexpected events.

To reduce emissions