It is possible to have an accident with a blood alcohol level below the legal limit because **alcohol affects the brain and vision**, even in small amounts. This can decrease reaction capacity and increase the risk of traffic accidents.

- **Alcohol is distributed throughout the body via the bloodstream**, primarily affecting the brain and vision, which can cause accidents.

- Although the law allows certain blood alcohol levels, the only completely safe level for driving is **0.0**, meaning no alcohol consumption.

- **Personal factors** such as weight, gender, age, and personal circumstances can influence how alcohol affects each individual, meaning that even with a low level, the effects can be significant.

Therefore, even if one is below the legal limit, the risk of an accident remains due to the effects of alcohol on the body.