Colorado: Alcohol and drugs
How alcohol and drugs affect driving, DUI and DWAI, blood alcohol limits, express consent and the penalties in Colorado. Split into 4 shorter tests so you're not stuck in one long quiz.
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Alcohol and drugs — Part 1
Questions in this part include: “Which of these can cause your driving privilege to be suspended, revoked or canceled?”
StartAlcohol and drugs — Part 2
Questions in this part include: “Which of these is a factor that a person's BAC depends on?”
StartAlcohol and drugs — Part 3
Questions in this part include: “What jail time does the handbook’s table of possible penalties for drivers 21 and older list for a second DWAI or DUI?”
StartAlcohol and drugs — Part 4
Questions in this part include: “What does the handbook say about a THC permissible inference level for DWAI?”
StartAll 67 Alcohol and drugs questions with answers
Choose a part above to take a practice test, or study every question and answer here.
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Which of these can cause your driving privilege to be suspended, revoked or canceled?
- Having a passenger who drinks alcohol
- Driving a vehicle with a dirty windshield
- Parking overnight on a public street
- Refusing to be tested for alcohol or drug content
Show answer
Correct answer: Refusing to be tested for alcohol or drug content
Refusing to be tested for alcohol or drug content can cost you your driving privilege.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 2 · Open this page in the manual (Manual page 2)
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Which conviction can lead to the suspension, revocation or cancellation of your driving privilege?
- Driving while under the influence of alcohol or drugs
- Driving a vehicle that has not been washed recently
- Driving with the radio turned up too loudly
- Driving to a different county in the state
Show answer
Correct answer: Driving while under the influence of alcohol or drugs
A conviction for driving under the influence of alcohol or drugs can cost you your driving privilege.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 2 · Open this page in the manual (Manual page 2)
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Which of these convictions is listed as a way you can lose your driving privilege?
- Receiving a parking ticket near a school
- Driving a rental vehicle in another state
- Riding a bicycle without wearing a helmet
- Buying or possessing alcohol while under 21
Show answer
Correct answer: Buying or possessing alcohol while under 21
Being convicted of purchasing or possessing alcohol while younger than 21 is listed among the ways to lose your driving privilege.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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What kind of drug is alcohol?
- A stimulant that speeds up the brain
- A painkiller that sharpens judgment
- A harmless substance with no effect on thinking
- A depressant that reduces brain function
Show answer
Correct answer: A depressant that reduces brain function
Alcohol is a depressant drug that reduces brain function, impairing thinking, reasoning and muscle coordination.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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What may depressants do to a driver?
- Slow reflexes and reaction times
- Speed up reflexes and reaction times
- Improve the ability to make decisions
- Improve muscle coordination
Show answer
Correct answer: Slow reflexes and reaction times
Depressants may slow reflexes and reaction times while reducing the ability to make decisions.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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What happens as the amount of drugs in your body increases?
- Your judgment stays the same but reactions slow
- Your skills improve after a short time
- Your judgment worsens and skills decrease
- Your judgment improves as you adjust
Show answer
Correct answer: Your judgment worsens and skills decrease
As the amount of drugs in the body increases, judgment worsens and skills decrease.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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When you drive while impaired, what are you more likely to do?
- Drive more slowly and cautiously than usual
- Take risks such as speeding or turning abruptly
- Leave extra space behind other vehicles
- Stay in one lane for longer stretches
Show answer
Correct answer: Take risks such as speeding or turning abruptly
The handbook says an impaired driver is more likely to take risks such as speeding or turning abruptly.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Which of these is it unlawful to possess in the passenger area of a motor vehicle on a public road?
- A prescription medication in its original bottle
- A cooler holding soft drinks
- A first aid kit
- An open container of alcohol or marijuana
Show answer
Correct answer: An open container of alcohol or marijuana
Possessing an open container of alcohol or marijuana in the passenger area on a public road is unlawful.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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What does DWAI mean?
- The driver is impaired to the slightest degree
- The driver is substantially incapable of safe driving
- The driver's license has been revoked
- The driver refused a toxicological test
Show answer
Correct answer: The driver is impaired to the slightest degree
DWAI (Driving While Ability is Impaired) means the driver is impaired to the slightest degree.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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What does DUI mean?
- The driver is impaired to the slightest degree
- The driver has any alcohol in the vehicle
- The driver is substantially incapable of safe driving
- The driver is under 21 and has been drinking
Show answer
Correct answer: The driver is substantially incapable of safe driving
DUI (Driving Under the Influence) means the driver is substantially incapable of safe driving.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Whether a driver is convicted of DWAI or DUI depends on what?
- The type and age of the vehicle being driven
- The level of the driver's mental or physical impairment
- The time of day when the driver was stopped
- Whether the driver is the owner of the vehicle
Show answer
Correct answer: The level of the driver's mental or physical impairment
A driver may be convicted of either DWAI or DUI depending on the level of the driver's mental or physical impairment.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Impaired driving convictions are not proven only by the driver's BAC. What else are they proven by?
- The driver's age and the class of the license held
- The weather conditions and the time of day of the stop
- The type of vehicle and how old the vehicle is
- The impaired driving behavior and a totality of circumstance
Show answer
Correct answer: The impaired driving behavior and a totality of circumstance
Convictions rest on the impaired driving behavior and a totality of circumstance, not on BAC alone.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Which of these is used to document a driver's impairment?
- Standardized Field Sobriety Tests
- The driver's credit history report
- The age of the vehicle being driven
- The driver's home address on file
Show answer
Correct answer: Standardized Field Sobriety Tests
Impairment is usually documented by observed impairment and the driver's performance on Standardized Field Sobriety Tests.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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A driver may be convicted of DUI per se if the driver's BAC is greater than what?
- 0.10%
- 0.12%
- 0.08%
- 0.06%
Show answer
Correct answer: 0.08%
The handbook says DUI per se applies when the BAC is greater than 0.08%.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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A license may be revoked for a driver under 21 based on a BAC over what?
- .04
- .02
- .06
- .03
Show answer
Correct answer: .02
Licenses may be revoked based on a BAC over .02 if the driver is under 21.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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A license may be revoked for a CDL driver based on a BAC over what?
- .02
- .06
- .10
- .04
Show answer
Correct answer: .04
Licenses may be revoked based on a BAC over .04 for a CDL driver.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Which of these can lead to a license being revoked?
- Refusing a toxicological test
- Failing to signal a lane change
- Driving with a loud muffler
- Driving in a bus lane
Show answer
Correct answer: Refusing a toxicological test
Licenses may be revoked if the driver refuses a toxicological test set forth in Colorado Statute.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Which of these is a factor that a person's BAC depends on?
- The person's driving record
- The color of the person's vehicle
- The time since the last drink
- The person's license class
Show answer
Correct answer: The time since the last drink
A person's BAC depends on the amount consumed, body weight, the time period, time since the last drink and the person's sex.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Two people drink the same amount of alcohol over the same time period. What is true?
- It affects them in exactly the same way
- It can affect them differently
- Only the older person is affected
- Neither is affected until the next day
Show answer
Correct answer: It can affect them differently
Alcohol affects people differently, even if they have consumed the same amount over the same time.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Does it make a difference to the amount of alcohol consumed whether a drink is beer, wine or liquor?
- Yes, liquor always contains far more alcohol than beer or wine
- Yes, beer always contains the least alcohol of any drink
- Yes, wine always contains more alcohol than beer does
- No, standard servings contain about the same amount of alcohol
Show answer
Correct answer: No, standard servings contain about the same amount of alcohol
Standard servings of beer, wine and liquor contain about the same amount of alcohol.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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How is a standard drink defined?
- 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of distilled spirits
- 16 ounces of beer, 8 ounces of wine, or 3 ounces of distilled spirits
- 8 ounces of beer, 3 ounces of wine, or 1 ounce of distilled spirits
- 24 ounces of beer, 10 ounces of wine, or 4 ounces of distilled spirits
Show answer
Correct answer: 12 ounces of beer, 5 ounces of wine, or 1.5 ounces of distilled spirits
A standard drink is 12 ounces of beer, 5 ounces of wine or 1.5 ounces of distilled spirits, all with the same amount of alcohol.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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Once alcohol is in the bloodstream, what will make a person sober?
- Drinking black coffee
- Taking a cold shower
- Only the passage of time
- Eating a large meal
Show answer
Correct answer: Only the passage of time
Only time makes a person sober, as the body eliminates alcohol through normal bodily processes.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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On average, by how much does a person's BAC drop per hour?
- 0.15%
- 0.015%
- 0.05%
- 0.025%
Show answer
Correct answer: 0.015%
On average, a person's BAC drops by 0.015% per hour.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 3 · Open this page in the manual (Manual page 3)
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In the handbook’s table of possible penalties for drivers 21 and older, what blood alcohol content is listed for a first DWAI conviction?
- 0.02%
- 0.04%
- 0.08%
- 0.05%
Show answer
Correct answer: 0.05%
The handbook’s table of possible penalties for drivers 21 and older lists 0.05% for a 1st DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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In the handbook’s table of possible penalties for drivers 21 and older, how many points toward suspension does a first DWAI conviction carry?
- 8
- 4
- 6
- 10
Show answer
Correct answer: 8
The handbook’s table of possible penalties for drivers 21 and older lists 8 points toward suspension for a 1st DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What fine does the handbook’s table of possible penalties for drivers 21 and older list for a first DWAI conviction?
- $600-$1,000
- $100-$300
- $200-$500
- $600-$1,500
Show answer
Correct answer: $200-$500
The handbook’s table of possible penalties for drivers 21 and older lists a $200-$500 fine for a 1st DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What jail time does the handbook’s table of possible penalties for drivers 21 and older list for a first DWAI conviction?
- 5-365 days
- 2-180 days
- 10-365 days
- 60-365 days
Show answer
Correct answer: 2-180 days
The handbook’s table of possible penalties for drivers 21 and older lists 2-180 days in jail for a 1st DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How many hours of public service does the handbook’s table of possible penalties for drivers 21 and older list for a first DWAI conviction?
- 48-96 hours
- 48-120 hours
- 12-24 hours
- 24-48 hours
Show answer
Correct answer: 24-48 hours
The handbook’s table of possible penalties for drivers 21 and older lists 24-48 hours of public service for a 1st DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How long is the license revocation the handbook’s table of possible penalties for drivers 21 and older lists for a first DUI conviction?
- 9 months
- 6 months
- 1 year
- 2 years
Show answer
Correct answer: 9 months
The handbook’s table of possible penalties for drivers 21 and older lists a revocation of 9 months for a 1st DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What fine does the handbook’s table of possible penalties for drivers 21 and older list for a first DUI conviction?
- $200-$500
- $600-$1,500
- $600-$1,000
- $1,000-$2,000
Show answer
Correct answer: $600-$1,000
The handbook’s table of possible penalties for drivers 21 and older lists a $600-$1,000 fine for a 1st DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What jail time does the handbook’s table of possible penalties for drivers 21 and older list for a first DUI conviction?
- 2-180 days
- 5-365 days
- 10-365 days
- 60-365 days
Show answer
Correct answer: 5-365 days
The handbook’s table of possible penalties for drivers 21 and older lists 5-365 days in jail for a 1st DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How many hours of public service does the handbook’s table of possible penalties for drivers 21 and older list for a first DUI conviction?
- 24-48 hours
- 48-120 hours
- 96-150 hours
- 48-96 hours
Show answer
Correct answer: 48-96 hours
The handbook’s table of possible penalties for drivers 21 and older lists 48-96 hours of public service for a 1st DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How long is the license revocation the handbook’s table of possible penalties for drivers 21 and older lists for a second DWAI or DUI?
- 1 year
- 9 months
- 2 years
- 6 months
Show answer
Correct answer: 1 year
The handbook’s table of possible penalties for drivers 21 and older lists a revocation of 1 year for a 2nd DWAI or DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What fine does the handbook’s table of possible penalties for drivers 21 and older list for a second DWAI or DUI?
- $200-$500
- $600-$1,000
- $600-$1,500
- $1,000-$2,000
Show answer
Correct answer: $600-$1,500
The handbook’s table of possible penalties for drivers 21 and older lists a $600-$1,500 fine for a 2nd DWAI or DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What jail time does the handbook’s table of possible penalties for drivers 21 and older list for a second DWAI or DUI?
- 2-180 days
- 10-365 days
- 5-365 days
- 60-365 days
Show answer
Correct answer: 10-365 days
The handbook’s table of possible penalties for drivers 21 and older lists 10-365 days in jail for a 2nd DWAI or DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How many hours of public service does the handbook’s table of possible penalties for drivers 21 and older list for a second DWAI or DUI?
- 24-48 hours
- 48-96 hours
- 96-150 hours
- 48-120 hours
Show answer
Correct answer: 48-120 hours
The handbook’s table of possible penalties for drivers 21 and older lists 48-120 hours of public service for a 2nd DWAI or DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How long is the license revocation the handbook’s table of possible penalties for drivers 21 and older lists for a third or subsequent DWAI or DUI?
- 2 years
- 9 months
- 1 year
- 5 years
Show answer
Correct answer: 2 years
The handbook’s table of possible penalties for drivers 21 and older lists a revocation of 2 years for a 3rd or subsequent DWAI or DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What jail time does the handbook’s table of possible penalties for drivers 21 and older list for a third or subsequent DWAI or DUI?
- 2-180 days
- 5-365 days
- 60-365 days
- 10-365 days
Show answer
Correct answer: 60-365 days
The handbook’s table of possible penalties for drivers 21 and older lists 60-365 days in jail for a 3rd or subsequent DWAI or DUI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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A driver younger than 21 convicted of DUI or DWAI for the first time is subject to license revocation if they do what?
- Do not renew the driver license before it expires
- Fail to complete a court-ordered evaluation or program
- Drive a vehicle owned by one of their parents
- Carry a passenger who is younger than 21 years
Show answer
Correct answer: Fail to complete a court-ordered evaluation or program
A first conviction leads to revocation if the driver fails to complete a court-ordered evaluation or program.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What happens to a driver younger than 21 who gets a second or third DUI or DWAI conviction?
- A warning letter only
- A fine with no license action
- Revocation only if a program is not completed
- Mandatory revocation of the license
Show answer
Correct answer: Mandatory revocation of the license
A second or third conviction is a mandatory revocation of the license.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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Must a person younger than 21 convicted of buying or possessing alcohol have been driving to lose their driving privilege?
- No, it applies even if driving is not a factor
- Yes, only if the alcohol was in a vehicle
- Yes, only if they were stopped for speeding
- Yes, only if their BAC was over .02
Show answer
Correct answer: No, it applies even if driving is not a factor
Revocation of the driving privilege applies even if driving is not a factor.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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How are penalties for driving while impaired by drugs, including prescription and over-the-counter medications, compared with alcohol?
- They are lighter than those for driving impaired by alcohol
- They apply only to illicit drugs, not to medications
- They are the same as for driving while impaired by alcohol
- There is no penalty if the drug is legal to use
Show answer
Correct answer: They are the same as for driving while impaired by alcohol
Driving while impaired by drugs is illegal and subject to the same penalties as driving while impaired by alcohol.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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Is using marijuana for medicinal purposes a defense for DUI or DWAI?
- Yes, it is a defense for DUI only
- No, it is not a defense
- Yes, if a physician recommended it
- Yes, it is a defense for DWAI only
Show answer
Correct answer: No, it is not a defense
Medicinal use of marijuana or other drugs is not a defense for DUI or DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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Which of these can impair safe driving skills, according to the handbook?
- Only illegal drugs and alcohol, but never medications
- Only drugs that are taken by injection or smoking
- Only drugs that were taken without a prescription
- Prescription painkillers and over-the-counter cold medicine
Show answer
Correct answer: Prescription painkillers and over-the-counter cold medicine
Prescription drugs such as tranquilizers and painkillers and over-the-counter medications for allergies and colds can impair safe driving skills.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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Like alcohol, impairment from other drugs is what?
- Dose dependent and varies among individuals
- The same for every person who takes it
- Dependent only on the age of the driver
- Unrelated to the amount that was taken
Show answer
Correct answer: Dose dependent and varies among individuals
Impairment from drugs is dose dependent and varies among individuals.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What must drivers do before driving after taking a medication?
- Drive only in daylight until the effects are known
- Take the medication only after the trip
- Check the medication label for warnings about its effects
- Let a friend decide whether it is safe
Show answer
Correct answer: Check the medication label for warnings about its effects
Drivers must check medication labels for warnings about the medication's effects before driving.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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What should you do if a medication label is missing or unclear?
- Assume the medication is safe and drive as you normally would
- Check with your doctor or pharmacist about possible side effects
- Take a smaller dose than usual before you start driving
- Ask a passenger to read the ingredients out loud to you
Show answer
Correct answer: Check with your doctor or pharmacist about possible side effects
If the label is missing or unclear, check with your doctor or pharmacist about possible side effects.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 4 · Open this page in the manual (Manual page 4)
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Which of these is named in the handbook as a psychomotor effect of marijuana impairment?
- Reaction time
- Taste sensitivity
- Color vision
- Sense of smell
Show answer
Correct answer: Reaction time
The handbook lists coordination, reaction time, motor skills and tracking as psychomotor effects of marijuana impairment.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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According to the handbook, what does the degree and duration of marijuana impairment depend upon?
- The type of vehicle being driven
- The time of day the driver last ate
- The method of consumption
- The class of the driver license
Show answer
Correct answer: The method of consumption
The handbook says the degree and duration of marijuana impairment depend upon the method of consumption.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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Unlike with alcohol, what is the relationship between the THC level in a driver's blood, breath or saliva and the degree of impairment?
- The level shows the exact degree of impairment
- There is no correlation between them
- Impairment only appears above a fixed level
- Impairment is always greater in blood than in saliva
Show answer
Correct answer: There is no correlation between them
The handbook states there is no correlation between THC levels and the degree of individual impairment.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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A permissible inference that a driver was DUI exists if the driver’s blood contained how much THC?
- 1 nanogram per milliliter
- 10 nanograms per milliliter
- 20 nanograms per milliliter
- 5 nanograms per milliliter
Show answer
Correct answer: 5 nanograms per milliliter
The handbook sets the permissible inference for DUI at 5 ng/ml of THC in the blood.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What does the handbook say about a THC permissible inference level for DWAI?
- It is 2 nanograms per milliliter
- It is the same as for DUI
- There is none
- It is half the DUI level
Show answer
Correct answer: There is none
The handbook says there is no THC permissible inference level for DWAI.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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On what are most marijuana impaired drivers convicted, according to the handbook?
- Behavioral symptoms as well as blood THC levels
- A blood THC level taken alone as proof
- The result of a roadside written quiz
- A review of the driver’s medical history
Show answer
Correct answer: Behavioral symptoms as well as blood THC levels
Convictions rest on behavioral symptoms as well as blood THC levels.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What is polydrug impairment?
- Impairment caused by one illegal drug used for many days
- Impairment from alcohol that lasts more than one day
- Impairment that only affects drivers on long trips
- Impairment caused by using two or more drugs simultaneously
Show answer
Correct answer: Impairment caused by using two or more drugs simultaneously
Polydrug impairment comes from using two or more drugs at the same time, in any combination.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What can mixing drugs do, according to the handbook?
- Cancel out the effects of each drug
- Increase the substance’s effects
- Make each drug leave the body faster
- Make impairment easier to notice
Show answer
Correct answer: Increase the substance’s effects
The handbook warns that mixing drugs can increase the substance’s effects.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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According to Colorado’s data in the handbook, polydrug impairment is more common than impairment by any single drug other than which one?
- Alcohol
- Marijuana
- Prescription medications
- Heroin
Show answer
Correct answer: Alcohol
Polydrug impairment is more common than impairment by any single drug other than alcohol.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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How can illegal drugs such as LSD, methamphetamine and heroin affect a driver?
- They always make a driver more careful and cautious
- They only affect drivers who take them with a meal
- They can give a false sense of alertness
- They improve reaction time in simple situations
Show answer
Correct answer: They can give a false sense of alertness
The handbook says these drugs can give a false sense of alertness and self-confidence or cause drowsiness.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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Drivers are routinely convicted of Colorado’s impaired driving laws regardless of what?
- Whether the driver was stopped at night
- The drug causing it and its level in blood or saliva
- Whether the driver has a clean record
- Whether the vehicle was registered in Colorado
Show answer
Correct answer: The drug causing it and its level in blood or saliva
Convictions happen regardless of the drug causing the impairment and regardless of the drug level found.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What does Colorado’s express consent law mean?
- You agree to let officers search your vehicle
- You agree to attend a class after any traffic ticket
- You agree to take a written test every year
- You agree to a chemical test for alcohol and/or drugs
Show answer
Correct answer: You agree to a chemical test for alcohol and/or drugs
Driving in Colorado means you agree to take a chemical test for alcohol and/or drugs.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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If a driver is suspected of driving while impaired, which test can law enforcement officers require?
- A hair sample test
- A sweat patch test
- A urine test
- A fingernail test
Show answer
Correct answer: A urine test
Officers can require a chemical test of blood, breath, saliva or urine.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What happens to your driver license if you refuse to take the chemical test or do not comply with being tested?
- It is revoked for one year
- It is suspended for 30 days
- It is revoked for six months
- It is revoked for three years
Show answer
Correct answer: It is revoked for one year
Refusing the test or not complying leads to a one-year revocation.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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After refusing a chemical test, for how long must you have an ignition interlock device on any vehicle you drive?
- Six months
- One year
- Five years
- Two years
Show answer
Correct answer: Two years
The handbook requires an ignition interlock device for two years after a refusal.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What does an ignition interlock device require from the driver?
- A fingerprint scan at the start of each month
- Breath samples before starting and while driving
- A blood sample whenever an officer stops you
- A signed driver form before every single trip
Show answer
Correct answer: Breath samples before starting and while driving
The device requires a breath sample before the engine starts and periodic samples while driving.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What happens when an ignition interlock device detects an elevated alcohol concentration level?
- The vehicle will not start
- The horn sounds until the driver stops
- The device turns off for one hour
- The license is cancelled on the spot
Show answer
Correct answer: The vehicle will not start
The handbook says the vehicle will not start if the device detects an elevated alcohol concentration.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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If other suspensions or revocations come from the same incident as a test refusal, how are they handled?
- They run at the same time as the revocation
- Only the longest one is kept
- They are added onto the end of the revocation
- They are cancelled after the first year
Show answer
Correct answer: They are added onto the end of the revocation
Other suspensions or revocations from the same incident are added consecutively onto the end of the revocation.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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Which penalties can alcohol or drug related violations include, according to the handbook?
- A written warning letter and nothing more
- Jail, fines and suspension of driving privileges
- Community service and no other penalties
- A small fine paid by the registered vehicle owner
Show answer
Correct answer: Jail, fines and suspension of driving privileges
The handbook says the penalties are very tough and can include jail, fines and suspension.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)
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What does Colorado law say about plea bargaining an alcohol or drug related driving offense?
- It is allowed for a first offense
- It is allowed if you complete a class
- It is allowed if you were not driving at night
- The law does not allow you to plea bargain out of it
Show answer
Correct answer: The law does not allow you to plea bargain out of it
Colorado law does not allow you to plea bargain out of an alcohol or drug related driving offense.
Source: Colorado Driver Handbook (DR 2337, January 2025), page 5 · Open this page in the manual (Manual page 5)