What is meant by a space cushion in driving?

A space cushion refers to the open area of space surrounding a vehicle, allowing for safe and adequate room for movement in traffic. This concept is integral to safe driving practices, as it provides a buffer zone that can help prevent collisions by ensuring that drivers have sufficient space to maneuver, react to sudden stops, or change lanes as necessary.

Maintaining a space cushion helps in several ways: it allows for greater visibility of the road and surrounding vehicles and gives drivers the time they need to react to unexpected situations. It encompasses not just the distance to the vehicle in front, but also the sides and rear, ensuring that drivers feel comfortable and safe while driving.

The other choices do not accurately describe the concept of space cushions. For instance, having a full gas tank pertains to a vehicle's operational capability rather than safety margins, parallel parking is a specific maneuver unrelated to surrounding spaces, and the distance between traffic lights is not about maintaining a safe buffer zone around a vehicle. Understanding the importance of maintaining a proper space cushion can significantly enhance driving safety and efficiency.