When a vehicle is traveling at a **speed higher than the maximum allowed**, it is said to be traveling **with excessive speed**. This means that the driver is exceeding the speed limit set for that particular road. For example, if the maximum allowed speed is 90 kilometers per hour and the vehicle is going at 100 kilometers per hour, it is exceeding the limit.

Excessive speed is dangerous because:

- It **hinders reaction** to unforeseen events, increasing the risk of making mistakes that can result in serious accidents.
- It **reduces lateral vision capacity**, creating an effect known as **tunnel vision**, where the driver only sees what is directly in front, as if they were in a tunnel.

- It can cause **fatigue and aggressiveness** due to the tension of driving at high speeds.
- On roads in good condition, it can give a **false sense of security**, making the driver think they are going slower than they actually are.

For these reasons, it is crucial to respect speed limits to ensure the safety of everyone on the road.