To determine the **circulation width** of an agricultural tractor, it is important to consider both the vehicle and its load. According to the regulations, the **maximum permitted width** for a vehicle includes the load it carries. This means that, when calculating the circulation width, the total space occupied by the vehicle along with any load it transports must be taken into account.

- **Vehicle width**: The regulations establish that the maximum permitted width for a vehicle is 2.55 meters, and this includes the load. Therefore, when considering the circulation width, the load that the vehicle carries must be included.


- **Preference in narrow areas**: In situations where it is necessary to decide which vehicle has preference to pass, the total width of the vehicle, including the load, is considered to determine which can pass first if there are doubts.

Therefore, the circulation width for an agricultural tractor is that of the stationary vehicle **including the load**.