What statute defines DUI in Connecticut?

Conn. Gen. Stat. § 14-227a is the controlling DUI statute in Connecticut. You can read the current text on the official code site at cga.ct.gov.

What is the Connecticut implied-consent law?

Conn. Gen. Stat. § 14-227b is the implied-consent provision. It sets out the consequences of refusing a chemical test after a lawful DUI arrest.

Connecticut DUI Statutes: The Code Sections That Control Your Case

The statutes that control Connecticut DUI cases

DUI in Connecticut is defined by Conn. Gen. Stat. § 14-227a, and the chemical-testing rules sit in Conn. Gen. Stat. § 14-227b. Both are published in the official state code at cga.ct.gov, which is the only version that governs — summaries elsewhere, including ours, can lag amendments.

Connecticut official code — DUI statute

Statutory text, definitions, BAC thresholds and sentencing ranges.

Implied-consent provision

What refusing a breath, blood or urine test costs you.

Statute at a glance

Connecticut DUI law at a glance

Sourced from the Connecticut code and state agency sites. Verify current text before relying on it.

Offense name: DUI (Connecticut)
Controlling statute: Conn. Gen. Stat. § 14-227a
Implied consent: Conn. Gen. Stat. § 14-227b
Per se BAC limit: 0.08 (0.04 CDL, 0.02 or lower under 21)
Prior-offense lookback: 10 years
First-offense fine: $500–$1,000
First-offense jail exposure: up to 6 months
Licence suspension: 45 days
Ignition interlock: Required on a first offense in most cases
Trial court: the Superior Court
High-risk filing: SR-22 for 3 years

A first offense brings a 45-day suspension followed by an interlock period.

First-offense exposure under Conn. Gen. Stat. § 14-227a: $500–$1,000, up to 6 months of jail exposure, and a 45 days licence suspension. A first offense brings a 45-day suspension followed by an interlock period.

What Conn. Gen. Stat. § 14-227a actually says

Conn. Gen. Stat. § 14-227a(a)(1) — operating a motor vehicle while under the influence of intoxicating liquor, drugs, or both.
Conn. Gen. Stat. § 14-227a(a)(2) — operating a motor vehicle with an elevated blood alcohol content of 0.08 percent or more.
Conn. Gen. Stat. § 14-227a treats impairment and elevated BAC as alternative ways of proving the same offense.

Charging documents cite the exact subsection, so check which one appears on your citation. The posted text on cga.ct.gov carries an effective date — amendments passed after it are not yet reflected.

Other Connecticut sections that control the case

Conn. Gen. Stat. § 14-227b

Implied consent and the per se suspension procedure.

Connecticut ZIP codes covered

These Connecticut ZIP-code pages carry the local court, filing and licensing detail for the area, and each one links back to this resource page.

Counties and cities using these Connecticut resources

Other Connecticut official resources

Connecticut DUI Courts: Where Your Case Is Heard Connecticut Driver Licensing After a DUI: Hearings, Reinstatement & SR-22

Frequently asked questions

What statute defines DUI in Connecticut?: Conn. Gen. Stat. § 14-227a is the controlling DUI statute in Connecticut. You can read the current text on the official code site at cga.ct.gov.
What is the Connecticut implied-consent law?: Conn. Gen. Stat. § 14-227b is the implied-consent provision. It sets out the consequences of refusing a chemical test after a lawful DUI arrest.