It is possible to have an accident even if driving below the maximum legal blood alcohol levels. This is because **alcohol negatively affects driving ability** in several ways, even in small amounts.

- **Effects on behavior:** Alcohol can create a **false sense of security**, leading to taking more risks and committing more infractions that can cause accidents. It can also make drivers act more aggressively or impulsively.

- **Effects on environmental perception:** Alcohol consumption affects the **ability to see traffic signs and lights**, correctly calculate distances, and perceive what is happening on the sides of the vehicle. Additionally, it increases the likelihood of being dazzled by the lights of other vehicles and of becoming distracted.

- **Effects on movements and decisions:** Alcohol impairs **coordination of movements** and increases the time needed to react. It also raises the probability of making poor decisions or not knowing how to execute them correctly.

For these reasons, even if one is below the legal blood alcohol limit, the risk of an accident remains due to the impairments in driving ability.