Smoking while driving can cause **distractions** and **vision problems** due to cigarette smoke. Here we explain why:

- **Distractions**: When smoking, the driver must find the cigarette and light it, which diverts their attention from the road. Additionally, one hand is occupied holding the cigarette, which limits the ability to maneuver the vehicle properly.

- **Vision problems**: The smoke emitted by the cigarette can cloud the driver's view, making it difficult to see the road and surroundings. This can lead to incorrect perception of distances and objects on the road.

- **Air quality**: The smoke also deteriorates the air quality inside the vehicle, which can affect the driver's ability to concentrate and react in time.

For these reasons, smoking while driving increases the risk of accidents, as it interferes with the driver's attention and vision.