If you are driving a bus on a road with three lanes in the same direction of travel, are you permitted to overtake a truck from the vertical No overtaking sign (R-305) onward?

Question

DentroTest · Accepted Answer

The R-305 sign (No overtaking) prohibits all vehicles from overtaking motor vehicles traveling on the roadway, but only when the maneuver involves encroaching on the zone reserved for oncoming traffic (Sign Catalog, Royal Decree 465/2025, since 1 July 2025; there is no longer an exception for motorcycles). With three lanes in the same direction, the bus can overtake the truck by moving into an adjacent lane of the same direction, without encroaching on the oncoming direction, so the sign does not prevent it. Nor is there a rule that prevents it from occupying the left lane: an automobile of more than 3,500 kg, such as a bus, normally drives in the lane to its right, but it may use the rest of the lanes in its direction when traffic or road circumstances make it advisable, without obstructing those following (General Traffic Regulations, Article 31(1)). Saying that the sign prohibits overtaking any motor vehicle in all cases is no longer what the Catalog says.

If you are driving a bus on a road with three lanes in the same direction of travel, are you permitted to overtake a truck from the vertical No overtaking sign (R-305) onward?

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