Drive Safe Online Practice Exam

Your car can lose traction in how many inches of water?

4 inches 6 inches 8 inches 12 inches

Correct Answer:

6 inches

Explanation:

Water between the tire and the road creates a slick layer that reduces friction, so the tire loses grip and can slide or skid. This phenomenon, often called hydroplaning, becomes likely around six inches of standing water for many passenger cars at typical driving speeds, making it hard to steer or brake effectively. Because traction can disappear even in shallower water if you’re going fast, the safe rule is to avoid driving through water deeper than about six inches. If you must cross, go slowly and steadily in a low gear, avoid sudden acceleration or braking, and test your brakes gently once you’re back on dry pavement. If the depth is uncertain, it’s best to turn around and find a safer route.

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