Texas Driver's License Knowledge TestSafe Driving PracticesMedium
A driver is traveling on a highway and notices a large commercial truck ahead. To ensure a safe following distance, the driver should maintain at least how many seconds behind the truck?
- A6 seconds
- B4 seconds
- C2 seconds
- D3 seconds
Show answer & explanationAnswer & explanation
Correct answer: A. 6 seconds
While the general recommendation for passenger vehicles is 3 seconds, larger vehicles like commercial trucks require more stopping distance. Therefore, a minimum of 4 seconds is recommended, and 6 seconds provides an even safer buffer, especially in less than ideal conditions or when following a vehicle that blocks your view of the road ahead.
Why the other options are wrong
- B. 4 seconds is a common recommendation for trucks, but 6 seconds is safer.
- C. 2 seconds is insufficient for safe following distance, especially for trucks.
- D. 3 seconds is the minimum for passenger cars, but trucks need more.
Following Distance (Trucks)
The safe amount of time or space needed between a driver's vehicle and a large commercial truck ahead.
- Trucks require significantly longer stopping distances.
- Large trucks block forward visibility.
- Increased following distance provides more reaction time.
Memory trick: Big truck, big gap, big safety.