To ensure road safety, it is **prohibited to change the direction of travel** if this can **endanger or obstruct other road users**. This prohibition applies in various situations:

- **Reduced visibility**: You should not change direction on curves or hilltops where visibility is limited, as this could surprise other drivers and cause accidents.

- **Adverse weather conditions**: In situations of fog or heavy rain, visibility and vehicle control may be compromised, increasing the risk of collisions.

- **Specific locations**: It is prohibited to perform this maneuver at level crossings, tunnels, highways, and expressways, unless there are designated areas for it. These locations present additional risks due to speed and constant traffic flow.

- **One-way streets**: Changing direction on these roads can cause confusion and dangerous situations for other drivers who do not expect to encounter vehicles going the opposite way.

In summary, the priority is always the **safety of all road users**. Changing the direction of travel should only be done when it does not pose a danger or obstruct others.