To determine the **circulation width** of special vehicle combinations, it is important to consider the traffic regulations and the permitted dimensions for these vehicles.

- **Special vehicle combinations**: These vehicles have specific characteristics that may exceed the standard permitted dimensions. In situations where the circulation width must be determined, the **greatest individual width** of the vehicles making up the combination should be considered. This ensures that the combination can circulate smoothly on the roads, especially in narrow areas.

- **Traffic regulations**: Special vehicles that exceed standard dimensions have priority in certain situations, such as in narrow areas. This reinforces the importance of considering the greatest individual width to ensure that the vehicle can pass without obstructions.

- **Permitted dimensions**: The maximum permitted width for a vehicle, including its load, is 2.55 meters. However, special vehicles may have dimensions that exceed these regulations, which justifies the need to consider the greatest individual width for their circulation.

In summary, when determining the circulation width for special vehicle combinations, the **greatest of all individual widths** should be taken into account to ensure safe and trouble-free transit.