Question 3987
In a tunnel, what minimum safe following distance must a passenger car keep from the vehicle ahead if it does not intend to pass?
- 200 meters or a 10-second interval.
- 50 meters or a 3-second interval.
- 100 meters or a 4-second interval.
Show answer and explanation
Correct answer: 100 meters or a 4-second interval.
In a tunnel, if you do not intend to pass, you must stay at least 100 meters or 4 seconds behind the vehicle ahead. This applies to passenger cars and any vehicle with a maximum authorized mass up to 3,500 kg. Those over 3,500 kg need 150 meters or 6 seconds.