**Alcohol** negatively affects a person's reaction time at the wheel. This means that after consuming alcohol, a person needs **more time** to respond to situations on the road, such as braking at a red light.

- Reaction time is the interval between perceiving a stimulus and responding to it. Under normal conditions, this time is from half a second to a second. However, alcohol is one of the factors that **increases** this reaction time.

- The consumption of alcohol causes you to need **more time to react** due to its effects on the brain and vision. This can lead to making poor decisions or not knowing how to execute them correctly.

- Additionally, alcohol affects **coordination of movements** and the ability to see the surroundings properly, which increases the risk of accidents.

For these reasons, it is crucial to avoid alcohol consumption before driving to maintain an adequate reaction time and ensure road safety.