**Speed** directly influences the driver's **anticipation ability**. At higher speeds, this ability decreases for several reasons:

- **Tunnel vision**: When driving fast, the field of vision is reduced, meaning the driver can only see what is directly in front of them, as if they were in a tunnel. This limits the ability to detect situations on the sides that might require an anticipatory reaction.

- **Reaction distance**: At higher speeds, the vehicle covers more distance in the same amount of time, which reduces the time available to react to an unforeseen event. This means the driver will reach the danger more quickly without having had enough time to anticipate and react appropriately.


- **Defensive driving**: This technique involves anticipating the movements and reactions of other drivers to react in time. However, at high speeds, it is more difficult to maintain this anticipation due to the reduced reaction time and limited vision.

In summary, driving at high speed decreases the driver's anticipation ability, which can increase the risk of accidents.