Impaired driving — Colorado Permit Test

Impaired driving on the Colorado permit test — 5 rules, each with the reason behind it and a question on it while it is fresh.

The rules

Alcohol is a depressant drug that reduces brain function, impairing thinking, reasoning and muscle coordination.

People think of drink as something that loosens them up. It is slowing the parts of you that decide when to brake.

Alcohol is a depressant drug that reduces brain function, which impairs thinking, reasoning, and muscle coordination

Colorado Driver Handbook, p.3

Depressants slow reflexes and reaction times and reduce the ability to make the decisions needed to operate a motor vehicle safely.

Driving is one decision after another, taken in less than a second. Alcohol takes time off the front of every one of them.

Depressants may slow reflexes and reaction times while reducing your ability to make the decisions necessary to safely operate a motor vehicle

Colorado Driver Handbook, p.3

As the amount of drugs in the body increases, judgment worsens and skills decrease.

The driver who has had the most is the one least able to tell. Judgment is one of the first things to go, so the warning system fails first.

As the amount of drugs in your body increases, your judgment worsens and skills decrease

Colorado Driver Handbook, p.3

When you drive while impaired you are more likely to take risks such as speeding or turning abruptly.

Impairment does not just slow you down, it changes what you are willing to try. The two together are what fills the crash reports.

When you drive while impaired, safe driving is not possible and you are more likely to take risks such as speeding or turning abruptly

Colorado Driver Handbook, p.3

It is unlawful to possess an open container of alcohol or an open container of marijuana in the passenger area of a motor vehicle on a public road.

An open container within reach is a drink halfway to being drunk. The law puts the line at the container rather than at proving who drank from it.

It is unlawful for someone to either possess an open container of alcohol or possess an open container of marijuana while in the passenger area of a motor vehicle that is on a public road

Colorado Driver Handbook, p.3

On the test

What kind of drug is alcohol?

A depressant that reduces brain function. People think of drink as something that loosens them up. It is slowing the parts of you that decide when to brake. Colorado Driver Handbook, p.3: “Alcohol is a depressant drug that reduces brain function, which impairs thinking, reasoning, and muscle coordination”

How this works

Most practice tests hand you a bank of questions and leave the manual somewhere else. This one puts them together.

You read one law and the reason behind it, then answer a question on that law while it is still fresh. Get it right and you move on; get it wrong and you have found the gap while it is cheap to fix, not on the morning of the exam.

Learning one rule at a time, and proving it immediately, is what turns a manual you skimmed into something you actually know — and it makes studying feel like getting somewhere rather than like waiting to find out.

What it costs

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  • Do the work, fail the real exam, and we refund you.

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Where these come from

Every rule here is checked against Colorado Driver Handbook, published by the Colorado Division of Motor Vehicles, and against the state code itself. Last checked 2026-09-16.