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BDifficulty 2/5

In a tunnel, a car not exceeding 3,500 kg maximum authorised mass does not intend to overtake. What minimum separation must it maintain from the vehicle ahead?

Correct answer

100 metres or an interval of 4 seconds.

At least 100 metres or a minimum four-second interval under Article 95.6. Vehicles exceeding 3,500 kg maximum authorised mass require at least 150 metres or six seconds, which the question excludes. These minima do not replace adapting distance to speed, grip and visibility; increase the margin where needed. The rule also applies to underpasses.

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  • 50 metres or an interval of 3 seconds.

  • 200 metres or an interval of 10 seconds.

  • 100 metres or an interval of 4 seconds.

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