**Intersections** are places where different roads or highways cross, and they are considered **dangerous both inside and outside urban areas**. This is due to several factors:

- **Crossings with signals**: At intersections, it is crucial to follow the instructions of traffic signals. If there are no clear lines indicating the entrance to the crossing, you must wait and yield from a place where you can clearly see the crossing and the approaching vehicles. This helps prevent accidents by ensuring that drivers do not enter the crossing without being sure it is safe to do so.

- **Risk of getting trapped**: You should never enter an intersection, pedestrian crossing, or cyclist crossing if there is a possibility that your vehicle could get trapped in the middle, which could disrupt traffic and increase the risk of collisions.

- **Obstacles in the crossing**: If you find yourself stopped at a traffic light in an intersection and your vehicle becomes an obstacle for other drivers, you must safely exit the crossing to avoid blocking the way.

These points highlight the importance of being cautious at intersections, as they are places where the risk of accidents is significant due to the convergence of different traffic flows and the need to make quick and safe decisions.