When overtaking a truck, it is important to know when to return to the right lane. The **general rule** is that you should return to your lane as soon as possible after overtaking, but without forcing other drivers to change their speed. This means you should not return immediately if you plan to continue overtaking, unless there is a vehicle behind you traveling at a higher speed.

- **Returning to the right lane**: After overtaking, you should turn on the appropriate lights to indicate your intention to return to the right lane. However, it is not necessary to do so immediately if you plan to overtake another vehicle, unless a faster vehicle is approaching from behind.

- **Traffic situations**: If a vehicle is rapidly approaching from behind, it is important to facilitate its passage by returning to the right lane so as not to hinder its progress.

In summary, the priority is to maintain traffic safety and flow, allowing faster vehicles to overtake without problems.