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C1Difficulty 3/5

A conventional diesel lorry with two single axles carries 12 tonnes on its driven axle. Under what conditions may it be driven?

Correct answer

If it respects its MAM and all technical and regulatory limits; the general total limit is 18 tonnes.

The current limit for a single driven axle is 12 tonnes. A conventional two-axle lorry has a general overall limit of 18 tonnes. Therefore, 12 tonnes on the driven axle does not by itself prevent circulation, but actual total mass must respect the authorised MAM and regulatory limit, and each axle must respect its technical and regulatory limits.

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  • It may be driven regardless of total mass because the driven axle does not exceed 12 tonnes.

  • If it respects its MAM and all technical and regulatory limits; the general total limit is 18 tonnes.

  • It cannot be driven because the driven axle exceeds a current limit of 11.5 tonnes.

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