For which vehicles are clearance lights mandatory?
Lighting
Explanation
The **marker lights** are essential to indicate the **total width** of a vehicle. These lights are placed on the outer edges and at the highest part of the vehicle to ensure they are visible. They are especially important for wide vehicles, as they help other drivers correctly perceive the size of the vehicle on the road.
- **Obligation**: Marker lights are mandatory for vehicles that measure more than **2.10 meters in width**. This includes cars, trailers, and semi-trailers that exceed this measurement. For vehicles that have a width between **1.80 meters and 2.10 meters**, the use of these lights is optional.
- **Function**: These lights are used in the same situations as position lights, ensuring that the vehicle is visible and its size is clear to other road users.
Therefore, the correct answer is that marker lights are mandatory for vehicles that measure more than **2.10 meters in width**.
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