Driving at a **speed below the minimum allowed** is dangerous and prohibited for several reasons:

- **Minimum speed**: Each road has an established minimum speed. For example, on highways and expressways, the minimum speed is **60 kilometers per hour**. Driving below this speed without a justified cause is considered abnormally slow.

- **Prohibitions**: It is prohibited to drive below the minimum allowed speed, even if there are no other vehicles on the road. The only exceptions are situations such as heavy traffic, breakdowns, poor road conditions, or if the vehicle is a bicycle, is drawn by animals, or is a special vehicle.

- **Safety**: Driving too slowly can be as dangerous as driving too fast, as it can cause accidents due to the speed difference with other vehicles. Additionally, if a vehicle cannot reach the minimum speed and there is a risk of an accident, the hazard lights should be turned on to alert other drivers.

For these reasons, it is important to respect the minimum speed limits to ensure road safety.