Texas Defensive Driving Written Practice Test 2025 - Free Defensive Driving Practice Questions and Study Guide

Question: 1 / 400

What is the three-second rule used for?

To determine safe driving speeds

To maintain a safe following distance from the vehicle ahead

The three-second rule is a guideline used to help drivers maintain a safe following distance from the vehicle ahead. It is based on the concept that a driver should choose a fixed point on the road, such as a sign or a tree, and begin counting seconds as the vehicle in front passes that point. If you reach the same point before three seconds have elapsed, you are too close to the vehicle in front and should increase your following distance.

By ensuring at least a three-second gap, drivers allow themselves sufficient time to react to sudden changes in traffic situations, such as unexpected stops by the vehicle ahead. This rule is particularly important in preventing rear-end collisions and contributes to overall road safety. Maintaining an adequate following distance allows for safer driving, especially under varying weather conditions or in heavy traffic.

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To calculate fuel efficiency

To measure reaction times

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