**Alcohol** and **drugs** are always dangerous for driving, regardless of the amount consumed.

- **Alcohol**: It affects the brain and vision, which can lead to traffic accidents. Even small amounts can be dangerous, as alcohol is distributed throughout the body via the bloodstream.

- **Drugs**: All drugs have negative effects that can endanger driving. For example:
- **Cannabis**: It can alter color perception, make it difficult to judge distances, and reduce concentration.
- **Cocaine**: It increases impulsivity and aggressiveness, and decreases the perception of danger.
- **Ecstasy**: It can cause hallucinations and increase sensitivity to light.
- **LSD**: It causes hallucinations and can trigger anxiety or panic.
- **Amphetamines**: They can lead to impulsive and violent behaviors, and a false sense of alertness that suddenly disappears, causing extreme fatigue.

- **Prohibition**: It is prohibited to drive under the influence of any drug, unless they are prescribed medications that do not affect driving ability. One in ten people who die in traffic accidents had consumed drugs.

For these reasons, both alcohol and drugs are always dangerous for driving.