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Connecticut driving lesson · Impairment, Distraction & Aggressive Driving

Alcohol, BAC and Connecticut's DUI penalties

A 3-minute lesson from the Connecticut course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.

Read time
3 minutes
Course unit
Impairment, Distraction & Aggressive Driving
Checkpoint questions
6
Source pages
35

Alcohol is involved in more than 40 percent of fatal traffic crashes. It dulls exactly the skills you need to drive — and it clouds your judgment first, so you can't tell when you've had too much. Connecticut backs this up with quick suspensions and ignition interlocks.

40+ percent

Share of traffic crashes in which someone is killed that involve alcohol

Handbook p. 35 ↗

Know the rule

No one can drink and drive safely, even with years of experience. New drivers are more affected by alcohol than experienced drivers because they are still learning to drive.

Handbook p. 35 ↗

Alcohol:

  • Affects the parts of the brain that control judgment and skill
  • Slows your reflexes and reaction time
  • Reduces your ability to see clearly and makes you less alert
  • Makes it hard to judge distances, speeds and the movement of other vehicles
  • Makes it hard to control your vehicle
Handbook p. 35 ↗

One alcohol drink equals

One alcohol drink equals
DrinkAmount
80-proof liquor, straight or mixed1.5 oz (one shot glass)
Beer12 oz (regular can, bottle, mug or glass)
Wine5 oz glass
Handbook p. 35 ↗

Know the rule

Specialty drinks can hold more alcohol — the same as several normal drinks. People under 21 could be considered impaired after only one drink.

Handbook p. 35 ↗

Know the rule

There is no way to sober up quickly. Coffee, fresh air, exercise or cold showers won't help; only time sobers you up.

Handbook p. 35 ↗

Zero tolerance

For drivers under 21, penalties apply for any measurable alcohol, defined as .02% or more, on both public roads and private property.

Handbook p. 35 ↗

Know the rule

If arrested for DUI, you'll be asked to take a blood, breath or urine test showing your blood alcohol content (BAC). Penalties come from both the courts and the Commissioner of Motor Vehicles.

Handbook p. 35 ↗

Administrative penalties

Administrative penalties
SituationLicense suspensionIgnition interlock (IID)
Fail the BAC testAt least 45 daysAt least 6 months
Under 21, test .02% or higherAt least 45 daysAt least 1 year
Refuse the test (any age)At least 45 daysAt least 1 year
Handbook p. 35 ↗

Know the rule

Installing and maintaining an ignition interlock device is a condition of reinstatement; it may be required longer depending on prior offenses on your record.

Handbook p. 35 ↗

Know the rule

If you'll be drinking socially, go with two or more people and agree who won't drink — rotate the designated driver — or use public transportation or a cab.

Handbook p. 35 ↗

Put it into practice

A 19-year-old has one beer at a party, then drives home and is stopped. Tested at .02%, he loses his license for at least 45 days and must use an ignition interlock for at least one year once reinstated.

Check your understanding

Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.

Under Connecticut's zero-tolerance law, what blood alcohol level makes a driver under 21 subject to penalties?
  1. .08% or more
  2. .02% or more
  3. .05% or more
  4. Any level above .10%

Answer: .02% or more

Drivers under 21 are subject to zero tolerance: any measurable amount defined as .02% or more is a violation.

Handbook p. 35 ↗
If a driver fails a chemical alcohol test, for how long is the operator's license suspended at minimum?
  1. At least 1 year
  2. At least 45 days
  3. At least 10 days
  4. At least 6 months

Answer: At least 45 days

If you fail the test, your operator's license will be suspended for at least 45 days.

Handbook p. 35 ↗
What device must a driver install and maintain as a condition of license reinstatement after a failed alcohol test?
  1. An ignition interlock device
  2. An engine speed governor
  3. A GPS speed tracker
  4. A dashboard camera

Answer: An ignition interlock device

You will be required to install and maintain an ignition interlock device (IID) as a condition of reinstatement.

Handbook p. 35 ↗
A driver under 21 tests at .02% BAC after arrest. For how long must they maintain an ignition interlock device?
  1. At least six months
  2. At least two years
  3. At least 45 days only
  4. At least one year

Answer: At least one year

For a driver under 21 testing at .02% or higher, the IID will be required for at least one year or more depending on prior offenses.

Handbook p. 35 ↗
What happens to your license if you refuse to take a chemical alcohol test after arrest, regardless of age?
  1. Exactly 10 days
  2. At least 45 days
  3. At least 6 months
  4. No suspension, only a fine

Answer: At least 45 days

Regardless of age, if you refuse to take a test, your operator's license will be suspended for at least 45 days.

Handbook p. 35 ↗
According to the handbook, how much wine counts as one alcohol drink?
  1. A 12 oz. glass
  2. A 5 oz. glass
  3. A 1.5 oz. glass
  4. An 8 oz. glass

Answer: A 5 oz. glass

One drink is 1.5 oz. of 80-proof liquor, 12 oz. of beer, or a 5 oz. glass of wine.

Handbook p. 35 ↗
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