What does the position occupied on the carriageway by a special vehicle depend on?
Special vehicles
The position occupied by a special vehicle on the roadway depends on its maximum authorized mass, as this determines its priority in narrow areas and its ability to circulate safely and orderly.
Explanation
The **position on the roadway** that a **special vehicle** must occupy depends on its **maximum authorized mass**. This is because special vehicles that do not exceed **3,500 kilograms** must travel on the **shoulder** if there is no specific lane for them. However, if a special vehicle exceeds this weight, it is not required to travel on the shoulder and can occupy the lane on the roadway.
Therefore, the **maximum authorized mass** is the determining factor for deciding whether a special vehicle must travel on the shoulder or can use the lane on the roadway.
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