On a bus equipped with marker lights, in what circumstances is it mandatory to have them on?

Question

DentroTest · Accepted Answer

The marker light, mandatory on vehicles more than 2.10 meters wide (such as buses), complements the position lights to indicate the volume of the vehicle and is lit on the same occasions as they are. The General Vehicle Regulations (Article 15(3)) require the front position lights to be on whenever the low beams, high beams or front fog lights are on; therefore, the marker lights go on together with those lights. In addition, the General Traffic Regulations (Article 99(1)) require position lights and, if the width exceeds 2.10 meters, marker lights between sunset and sunrise, when conditions reduce visibility, and in tunnels and underpasses. It is not accurate that they must be on continuously whenever the vehicle is moving, regardless of the time of day or visibility. Nor is it true that they are mandatory only between sunset and sunrise: that interval leaves out daytime situations of reduced visibility and tunnels, where they must also be used.

On a bus equipped with marker lights, in what circumstances is it mandatory to have them on?

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