Alcohol effects on vision and reaction — Tennessee Permit Test

Alcohol reduces your ability to see clearly at night by more than half.

Night already hides walkers and dark cars. After drinking, you lose more than half of what little you could see.

It reduces the ability to see clearly at night by more than half.

Side vision is reduced by about 30 percent at a BAC of .05 percent.

With less side vision you may miss a car pulling out from a side street or a child stepping off the curb.

Side vision is reduced by about 30 percent at .05 percent BAC.

The eyes provide almost 90 percent of the information used in driving, so any loss of vision can be disastrous.

Almost everything you react to on the road comes in through your eyes. Blur them and your whole drive suffers.

Because the eyes provide almost 90 percent of the information used in driving, any restriction in vision can cause disastrous results.

Reaction time and coordination are impaired by alcohol at a BAC as low as .02 percent.

When a car ahead brakes, a slower foot on the pedal can be the difference between a close call and a crash.

Reaction and coordination are impaired by alcohol consumption as low as .02 percent BAC.

Alcohol, in any concentration, is a depressant, not a stimulant; it slows all nerve impulses and body functions.

The buzz feels like energy, but your brain is actually slowing down. That gap is how drinkers crash while feeling sharp.

Alcohol, in any concentration, is a depressant, not a stimulant.

How much does alcohol reduce your ability to see clearly at night?

By more than half. Night already hides walkers and dark cars. After drinking, you lose more than half of what little you could see. Tennessee Comprehensive Driver License Manual, p.80: “It reduces the ability to see clearly at night by more than half.”