Driving at an **inappropriate speed** increases the risk of a traffic accident for several reasons:

- **Environmental conditions:** Even if the speed is within the permitted limits, it may not be appropriate if the driver's conditions, weather, road conditions, or vehicle circumstances are not optimal. For example, driving at 70 km/h on an icy road can be dangerous because the vehicle may skid.


- **Reaction to unforeseen events:** Driving at excessive speed makes it difficult to react quickly to unexpected situations, increasing the likelihood of making mistakes that can be fatal.

- **Limited vision:** At high speeds, the ability to see what is happening on the sides is reduced, a phenomenon known as **tunnel vision**, which limits environmental perception and increases the risk of accidents.

- **Fatigue and aggressiveness:** Driving fast for a long time can cause fatigue and aggressiveness, negatively affecting the ability to make safe decisions.

- **Misjudgment of speed:** On roads in good condition, it is easy to underestimate the actual speed at which one is driving, which can lead to dangerous situations.

For these reasons, it is crucial to adjust speed to environmental conditions to minimize the risk of accidents.