Texas DMV Written Driving Practice Test

How many seconds should you let pass when you are following a car?

1. 2

2. 4

3. 6

4. 8

The correct answer is: 6

You should let at least 6 seconds pass when following a car. This is known as the "2-second rule" and is recommended by the National Highway Traffic Safety Administration. This allows enough time for you to react and stop if the car in front of you suddenly brakes. Option A is too short, as it only gives you 2 seconds to react. Option B is slightly better, but still not enough time to react in some situations. Option D is too long, as it gives you 8 seconds to react, which is excessive and could cause traffic congestion. Overall, option C is the best choice as it strikes the right balance between safety and efficient driving.