Access permitted only to certain motorcycles

Sign **R-103** indicates **no entry for motor vehicles**, but establishes a **clear exception**:

- **It does allow access** to:
- **Two-wheeled motorcycles**
- **Three-wheeled vehicles assimilated to motorcycles** (due to their technical and construction characteristics)

- **It does not allow access** to the rest of **motor vehicles**:
- Passenger cars
- Lorries
- Vans
- Buses
- Mopeds with more than three wheels or other motor vehicles not assimilated to motorcycles

In summary, this sign restricts passage for most **motor vehicles**, but **authorizes exclusively** **two-wheeled motorcycles** and **three-wheeled vehicles that are considered motorcycles**.