When driving a truck whose maximum authorized mass (MAM) is above 3,500 kg, does the sign prohibiting overtaking by trucks (R-306) apply to you?

Question

DentroTest · Accepted Answer

Sign R-306 prohibits trucks whose maximum authorized mass (MAM) exceeds 3,500 kg from overtaking motor vehicles traveling on the roadway, even when the maneuver does not involve encroaching on the zone reserved for oncoming traffic. Since 1 July 2025 (Royal Decree 465/2025) the sign no longer has an exception for motorcycles. Therefore, for anyone driving a truck of more than 3,500 kg MAM, the sign applies directly.

When driving a truck whose maximum authorized mass (MAM) is above 3,500 kg, does the sign prohibiting overtaking by trucks (R-306) apply to you?

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