When overtaking on a motorway, it is crucial to be careful with the **blind spot**. This is an area around the vehicle that cannot be directly seen through the rearview mirrors.

- **Defensive driving**: It is important to maintain an adequate distance and stay out of the blind spot of other vehicles to avoid collisions. This is especially relevant when changing lanes or overtaking, as other drivers may not see you if you are in their blind spot.

- **Overtaking safely**: When overtaking, you must ensure that there are no vehicles in your blind spot before changing lanes. This involves looking over your shoulder to check that the road is clear.

- **Completing the overtaking**: Once you have overtaken, return to your lane as soon as possible, ensuring that there are no vehicles in your blind spot and without forcing other drivers to change their speed.

Paying attention to the blind spot is essential for safe overtaking and avoiding accidents on the motorway.