Use of Public Roads
What is the minimum safety distance in a tunnel for general vehicles?
Reviewed on 17 Jul 2026
- A 50 metres or 2 seconds
- B 75 metres or 3 seconds
- ✓ 100 metres or 4 seconds
- D 150 metres or 6 seconds
Why this is the correct answer
In a tunnel, the minimum safety distance between general vehicles is 100 metres or 4 seconds.
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