How much room, at the very least, should the driver of the blue car leave behind the red car?

Answer options

Why

A gap of at least 3 seconds is the usual minimum: pick a fixed point, and once the red car passes it, the blue car should take three seconds or more to reach it. Allow more space when weather or road conditions are poor, and remember that a 1-second gap leaves almost no time to react.

About this question

Topic: Following distance   License: Car permit

Part of these practice sets:

• District of Columbia: State Practice Set

Where it applies: Used in practice sets for:

• District of Columbia

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This question is part of State Practice Set (21 questions). Take the full set and check your score.

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