Driving at **high speed** can make it **more difficult to control the vehicle** for several reasons:

- **Reaction to unforeseen events**: At higher speeds, it is more challenging to react quickly to unexpected situations, increasing the risk of making dangerous mistakes.

- **Tunnel vision**: When driving fast, the ability to see what is happening on the sides decreases, limiting vision to what is directly in front, as if in a tunnel. This reduces environmental awareness and can lead to incorrect decisions.

- **Fatigue and tension**: Driving at high speed for a long time can cause fatigue and increase aggressiveness, which negatively affects the ability to control the vehicle.

- **Misjudgment of speed**: On well-maintained roads, there can be a false sense of going slower than one actually is, which can lead to underestimating speed and losing control.

For these reasons, it is crucial to maintain an appropriate and constant speed, respecting the limits and adapting to traffic, road, and weather conditions.