Overtaking other vehicles is a maneuver that requires **good visibility** to ensure the safety of all road users. Specifically, overtaking is prohibited when there is **insufficient forward visibility**. This includes situations such as:

- **Sharp curves** where the road ahead cannot be clearly seen.


- **Crests**, which are elevations in the road that prevent seeing what is on the other side.

- Adverse weather conditions such as **dense fog, heavy rain** or when the **sun dazzles**, as these situations reduce visibility and increase the risk of accidents.

- Overtaking behind another vehicle that is also overtaking, as this can obstruct the view of the road and force entry into the opposite lane without sufficient visibility.

These restrictions are designed to avoid dangerous situations where oncoming traffic or any obstacle on the road cannot be clearly seen. Therefore, **insufficient forward visibility** is a key reason for prohibiting overtaking.