Using a **mobile phone** while driving significantly increases the risk of an accident. This risk is **four times greater** than if the phone is not used. The reasons include:

- **Distraction**: Attention is focused more on the conversation than on the road, which can lead to missing signals or misjudging distances.
- **Driving errors**: There may be road departures or invasion of opposite lanes due to lack of attention.
- **Difficulty in handling**: Holding the phone in the hand or shoulder makes it difficult to control the steering wheel.
- **Disorientation**: One can lose track of time and orientation.

Although the use of **hands-free** is legal, it is also dangerous because part of the attention remains focused on the conversation and not on driving. Therefore, the risk of an accident is still higher than if the phone is not used at all.