**Permanent directional panels** are devices used to **indicate to drivers the direction they should follow in places where there is a potential danger**. Their main function is to **alert users to a specific danger** on the road.

- These panels are different from other types of signs, such as beaconing signs, which are used to highlight works and obstacles, or panels with changing messages, which provide variable information according to traffic conditions.
- The number of permanent directional panels in a specific area indicates the level of danger: **one panel** suggests moderate danger, **two panels** indicate considerable danger, and **three panels** signal a high level of danger.

Therefore, their main function is to warn drivers about specific dangers on the road, helping them to take appropriate precautions.