At an intersection, it is important for drivers to observe the **traffic lights with additional lights** to avoid following a direction that is not convenient for them. These traffic lights may have arrow-shaped lights indicating where the vehicle should be directed.

- **Square traffic lights for vehicles**: They only affect vehicles traveling in the lane where they are placed.
- **Green light in the shape of a downward arrow**: Allows driving in the lane, but other present signals must be obeyed.
- **White or yellow light in the shape of a downward arrow**: Indicates that the lane must be changed because the current one will close.
- **Red light in the shape of a cross**: Prohibits occupying the lane and requires leaving it quickly.

- At intersections, it is crucial to follow the instructions of the signals to avoid getting trapped and blocking the passage of other vehicles. If a vehicle becomes an obstacle, it must exit the intersection wherever possible, as long as there is no oncoming traffic.

- **Signals to the right and left** are also important. Signals to the right must be obeyed, but if you wish to turn left or go straight and there are no signals to the right, you must follow the signals to the left.

Observing and correctly following these signals helps drivers avoid unwanted directions and maintain a safe and efficient traffic flow.