This sign indicates a mandatory carriageway for...
Signage: Vertical signs
This sign (R-404) indicates a carriageway that must be used by motor vehicles, but it explicitly excludes two-wheeled motorcycles and three-wheeled vehicles that are treated as motorcycles.
Explanation
Mandatory carriageway for motor vehicles, except certain motorcycles
Sign **R-404** indicates that the **carriageway is for the mandatory use of motor vehicles**, but with clear exceptions:
- It is **mandatory** to drive on that carriageway for **motor vehicles**.
- It **does not** apply to **two-wheeled motorcycles**.
- It also does not apply to **three-wheeled vehicles treated as motorcycles**.
In short, this sign obliges **drivers of motor vehicles** (except for the indicated motorcycles) to use the **carriageway** where the sign is placed.
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