What is the maximum length allowed for a combination of vehicles comprising a lorry and two-axle trailer including load?

The combination of vehicles comprising a lorry and two-axle trailer is subject to specific regulations in Germany, primarily outlined in the Straßenverkehrs-Ordnung (StVO) and the German Vehicle Registration Regulation (FZV).

For a standard combination of a lorry with a two-axle trailer, the maximum length allowed is indeed 20.75 meters. This regulation is important for several reasons:

1. **Safety**: Limiting the length of vehicle combinations ensures better maneuverability on the road, reducing the risk of accidents, particularly in urban environments or on narrow roads.

2. **Traffic Flow**: Maintaining standard vehicle lengths helps to ensure smoother traffic flow, as excessively long vehicles can hinder the movement of other road users.

3. **Infrastructure Compatibility**: Roads, bridges, and tunnels are designed with specific dimensions in mind. By enforcing length restrictions, authorities can protect infrastructure integrity.

Understanding these regulations is crucial for drivers to operate their vehicles legally and safely on German roads.