Where are the end-outline marker lights fitted on a special vehicle?

Correct answer

At the highest and widest part of the vehicle

On special vehicles, the end-outline marker lights must be fitted at the highest and widest part of the vehicle to indicate its upper and lateral limits. This clearly defines its actual outline, helping other road users assess its height and width at crossings, bridges or during manoeuvres at night. They mark the upper corners to improve perception of the vehicle's volume. They help prevent scraping and impacts in narrow or poorly lit passages. They supplement the other compulsory lights without replacing them. Key point: placing them at the highest and widest point maximises the vehicle's visibility and reduces risks.