This sign makes it mandatory to drive on the road...
Signage: Vertical signs
Sign R-404 indicates a carriageway mandatory for motor vehicles, but it specifically excludes two-wheeled motorcycles and three-wheeled vehicles treated as motorcycles, which are not required to use that carriageway.
Explanation
Obligation to drive on a specific carriageway
Sign **R-404 “Carriageway compulsory for motor vehicles, except two-wheeled motorcycles”** indicates that there is an **obligation to drive on the carriageway** where the sign is located.
This obligation applies to:
- **Motor vehicles**,
- **Except for**:
- **Two-wheeled motorcycles**,
- **Three-wheeled vehicles treated as motorcycles**.
That is, drivers of motor vehicles (except the motorcycles indicated) **must use that carriageway** and may not drive on other parts of the road that are not authorised for them.
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