DOT inspection requirements in Connecticut

The Connecticut DMV's Commercial Vehicle Safety Division enforces truck and bus safety. Connecticut adopts federal rules, covering intrastate vehicles at 18,001 lb, and requires proof of the annual inspection to register qualifying vehicles. Connecticut is on FMCSA's accepted list for its bus inspection program, so buses may need a state inspection.

Need a DOT inspection near you in Connecticut?

Bright Inspect does the federal annual for trucks and trailers where they're parked. Connecticut runs its own inspection program for buses, so we confirm what your vehicle needs before you pay.

Book an inspection in Connecticut

Connecticut at a glance

Connecticut commercial vehicle inspection rules at a glance. Last reviewed: September 11, 2026.
Item	Connecticut
Lead agency	Connecticut DMV, Commercial Vehicle Safety Division
Other agencies	Connecticut State Police; CTDOT for regulated public transportation carriers
Federal rules	Adopted, with a state intrastate threshold
Who's covered intrastate	18,001 lb or more; passenger and placarded hazmat triggers
Annual inspection	Every 12 months; proof needed to register qualifying vehicles
FMCSA-accepted state program	Yes, for buses

Compare Connecticut with other states on the state requirements hub, or see which states run their own inspection programs.

Who regulates commercial vehicles in Connecticut?

The DMV's Commercial Vehicle Safety Division runs roadside and weigh station inspections under the federal MCSAP program; its Motor Vehicle Inspectors are certified law enforcement officers. The Connecticut State Police also enforce commercial vehicle rules, and CTDOT oversees certain public transportation carriers.

Does Connecticut follow federal rules, and what are the intrastate thresholds?

Yes. Connecticut adopts the federal Part 396 inspection rules (Connecticut General Statutes ch. 246, including 14-163c). Connecticut-only vehicles are covered at 18,001 lb or more, using the greater of GVWR, GVW, GCWR or GCW. Passenger vehicles and placarded hazmat are covered under their own triggers.

Who is covered in Connecticut, interstate vs. intrastate. Last reviewed: September 11, 2026.
Operation	Who's covered
Interstate	10,001 lb or more, plus federal passenger and hazmat triggers (49 CFR 390.5)
Intrastate (Connecticut only)	18,001 lb or more; more than 15 passengers including the driver, or more than 8 where covered; placarded hazmat at any weight

What annual or periodic inspections does Connecticut require?

Covered trucks, tractors, trailers and buses need the federal annual every 12 months, and Connecticut asks for evidence of it when you register a qualifying commercial vehicle. FMCSA's 2008 notice lists Connecticut as an accepted state program, citing the Connecticut bus inspection program (73 FR 63040).

Periodic inspections in Connecticut. Last reviewed: September 11, 2026.
Inspection	Applies to	How often	Rule
Federal annual	Every covered CMV and each combination unit	12 months	49 CFR 396.17; CGS 14-163c and 14-163e
Bus and school bus inspection	Buses and student transportation vehicles	Set by the state program	Connecticut DMV vehicle inspections
Public transportation carriers	Carriers under CTDOT jurisdiction	Annual inspection evidence carried in the vehicle	CTDOT Regulatory and Compliance Unit

Every unit counts on its own: see whether each trailer needs its own annual inspection.

Who can perform the inspection, and is a technology-based inspection accepted?

For trucks and trailers, the federal annual can be done by an inspector qualified under 49 CFR 396.19, either a carrier employee or a third party. That's the model Bright Inspect is designed for, and our federal annual is designed to meet FMCSA annual inspection requirements.

Buses and school buses fall under Connecticut's state inspection program, which DMV performs. Our federal annual is not a substitute for it. We're still confirming exactly which buses the state program covers, so check with the Connecticut DMV or ask us before booking a bus.

What records and stickers does Connecticut require?

Keep the annual inspection report 14 months, along with inspector qualification and maintenance records, with proof of inspection on the vehicle. Connecticut doesn't require a separate state sticker for the annual. Have the report ready when registering a qualifying vehicle.

More on how long to keep DOT inspection records.

Rules for tow trucks, school buses and passenger carriers in Connecticut

Special vehicle rules in Connecticut. Last reviewed: September 11, 2026.
Vehicle	Rule
School buses	Inspected by Connecticut DMV; school districts oversee transportation contracts and operational safety
Buses and public transportation	State bus inspection program; CTDOT-regulated carriers must carry annual inspection evidence in the vehicle
Tow trucks	We're still confirming Connecticut-specific inspection rules for tow trucks. Check with the Connecticut DMV Commercial Vehicle Safety Division directly

See school bus inspection requirements and rules for motorcoaches, party buses and charter buses.

What happens if your inspection is expired at a roadside stop in Connecticut?

DMV Motor Vehicle Inspectors and State Police inspect trucks and buses at weigh stations and on the highway. Federal rules let an officer cite you under 49 CFR 396.17(c) when proof of a current annual inspection isn't on the vehicle; it carries a CSA severity weight of 4. The officer gives the driver an inspection report. The carrier must certify that listed violations were corrected and return it within 15 days, and keep a copy for 12 months (49 CFR 396.9). Fines are set by state law. Connecticut asks carriers to email the corrected report to MCSAP.Reports@ct.gov within 15 days; late returns can lead to fines or a registration suspension (Connecticut DMV).

We're still confirming roadside fines for a missing annual inspection in Connecticut. Check with the Connecticut DMV Commercial Vehicle Safety Division directly.

Stopped without proof of a current annual? See what to do when your inspection expired or failed at roadside and what happens if your annual inspection is expired. Nobody can promise to remove a violation or change a safety score; what fixes the problem going forward is a current inspection and a complete record.

Connecticut DOT inspection FAQs

For trucks and trailers, you don't need a station. A qualified inspector can do the federal annual anywhere, and Bright Inspect does it where your truck is parked. Buses and school buses go through Connecticut's state inspection; ask us before booking those.

Yes, for qualifying commercial vehicles. Connecticut requires evidence of the federal annual inspection at registration, so keep a current report on hand.

Usually not under Connecticut's intrastate rules, which start at 18,001 lb, unless it carries placarded hazmat or passengers that trigger coverage. Interstate trucks are covered from 10,001 lb.

Yes, for trucks and trailers under the federal annual model. Not for buses covered by Connecticut's state inspection program. We'll tell you before you pay.

Official sources for Connecticut

Last reviewed: September 11, 2026

Annual DOT inspection in Connecticut