What specific lighting device is mandatory on buses that exceed 2.10 meters in width?

Question

DentroTest · Accepted Answer

According to the General Vehicle Regulations (Annex X), marker lights are mandatory on vehicles more than 2.10 meters wide (and optional between 1.80 and 2.10 meters). There are two at the front and two at the rear, placed as high as the vehicle allows, and their function is to indicate the overall width: the front ones are white and the rear ones are red. Reversing those colors, with red at the front and white at the rear, does not comply with the regulations. The amber side position lights are not the lighting required by width: they are mandatory because of length, from 6 meters.

What specific lighting device is mandatory on buses that exceed 2.10 meters in width?

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