CDL Requirements in Connecticut (2026): Steps, Cost & Testing

Requirements verified July 20, 2026 against Connecticut Department of Motor Vehicles (DMV)

Connecticut issues CDLs through the Department of Motor Vehicles (DMV). You hold a regular Connecticut license, self-certify your driving type online, register with the FMCSA Drug and Alcohol Clearinghouse, then get a Commercial Learner's Permit for $20 (general knowledge test $16). After completing ELDT and holding the CLP at least 14 days, you pass a three-part skills test in a truck you supply, scheduled through the DMV's Driver Examination unit. The CDL costs $70 and is valid four years.

Connecticut handles CDLs through its Department of Motor Vehicles. The process is standard — a regular license first, an online self-certification of your driving type, FMCSA Drug and Alcohol Clearinghouse registration, a $20 Commercial Learner's Permit, ELDT, a 14-day CLP hold, then a three-part skills test — but Connecticut charges separately for each test rather than bundling them into one application fee.

State fees are modest: about $20 for the CLP, $16 for the general knowledge test (plus $5 for air brakes, combination, and each endorsement), $30 for the skills test, and $70 for the four-year CDL. The larger expense is ELDT tuition, surveyed near $5,000–$10,000 for a private Class A program in Connecticut, plus a DOT physical and, for hazmat, the TSA fingerprint fee.

Skills tests are run by the DMV's Driver Examination Unit — you schedule by emailing Form R-405 after your 14-day CLP hold and bring your own representative truck. Unlike the eight TSA self-managed states, Connecticut sends hazmat applicants through the standard federal Universal Enrollment/IdentoGO screening rather than fingerprinting them at the DMV.

Eligibility and documents in Connecticut

• Age: at least 18 for intrastate driving; 21 to drive interstate or haul hazmat.
• A valid Connecticut driver's license
• REAL ID-compliant proof of identity
• Proof of Social Security number
• Proof of legal presence in the United States
• Proof of Connecticut residence (two separate documents)
• Completed Application for Commercial Driver's License (Form R-229a)
• Printed confirmation of your online CDL self-certification
• A valid medical examiner's certificate on file (self-cert categories that require one)

How to get your CDL: step by step

1. Get your Commercial Learner's Permit (CLP). Pass the required knowledge tests: General Knowledge (all applicants) — 50 questions, 40 correct to pass; Air Brakes (if the vehicle has air brakes) — 25 questions, 20 correct to pass; Combination Vehicles (Class A) — 20 questions, 16 correct to pass; Passenger (P) — 20 questions, 16 correct to pass; School Bus (S) — 20 questions, 16 correct to pass; Hazardous Materials (H) — 30 questions, 24 correct to pass.
2. Complete ELDT training. For a first Class A/B CDL or a first hazmat, passenger, or school-bus endorsement, you must train with a provider on the FMCSA Training Provider Registry. Connecticut verifies your ELDT completion against the federal FMCSA Training Provider Registry (TPR) before letting you take the CDL skills test (or, for hazmat, the knowledge test). Connecticut has no separate state training portal — you must use a provider listed on the federal registry, and the provider submits your completion certification to FMCSA. ELDT has been required since February 7, 2022 for entry-level drivers seeking a first Class A/B CDL, a B-to-A upgrade, or a first P, S, or H endorsement. Drivers who held the applicable CDL or endorsement before that date are grandfathered. ELDT is not required merely to hold a CLP.
3. Hold your permit 14 days. Federal rules require at least 14 days before the skills test.
4. Pass the skills test. It has 3 parts: Pre-trip / vehicle inspection, Basic control skills (static/off-road course), On-road driving test. Connecticut's official CDL pages describe skills testing administered by the DMV's Driver Examination / Testing Unit (DETU), not third-party testers. After holding your CLP at least 14 days, submit Form R-405 by email to dmv-detu@ct.gov (the DMV provides a test date within about three business days) — some materials also list a scheduling line at (860) 263-5096. If Connecticut has approved any third-party skills examiners, confirm directly with the DMV.
5. Get your CDL issued. Pay the license fee, submit your medical self-certification, and receive your license (valid 4 years). A Connecticut CDL is valid four years and renews on/near the operator's birthday (the DMV mails a courtesy notice about 60 days out; you may renew up to a year early). Upgrading class or adding a passenger, school-bus, or hazmat endorsement can require additional ELDT, a new/updated CLP with the 14-day hold, and the applicable $5 knowledge test(s) plus a $30 skills test where a road test is needed. Confirm the exact upgrade path for your class with the Connecticut DMV.

Medical certification in Connecticut

Self-certify your driving type through the DMV's online self-certification system, print the email confirmation, and bring it to your DMV appointment. A valid medical examiner's certificate from a provider on the National Registry of Certified Medical Examiners must be on file. Under the National Registry II changes phased in during 2025, certified examiners transmit exam results to the state electronically rather than you handing in a paper card. Verify the current submission method with the Connecticut DMV.

If your card lapses: Keep a valid medical card on file continuously. If your certificate lapses, your CDL is subject to a downgrade to a non-commercial license. The DMV checks your Drug and Alcohol Clearinghouse status before any CLP or CDL transaction as well.

Every CDL holder must self-certify one operating category. The categories offered here:

• NI — Non-excepted Interstate (operates in and outside Connecticut; medical card required)
• EI — Excepted Interstate
• NA — Non-excepted Intrastate (operates only within Connecticut; medical card required)
• EA — Excepted Intrastate

New to the DOT physical? See our DOT physical guide and CDL medical card explainer.

What a CDL costs in Connecticut

Connecticut charges per test — $16 general knowledge and $5 each for air brakes, combination, and endorsements — plus a $30 skills test and $70 CDL, on top of the $20 CLP. The biggest cost is ELDT tuition. For hazmat, add the TSA/IdentoGO fingerprint fee (about $85.25, confirm with TSA). Fees confirmed against the CT DMV CLP/CDL pages 2026-07-20.

See the full national breakdown on our CDL cost guide.

Skills testing in Connecticut State-administered testing

Connecticut administers CDL skills tests through the state; approved public third-party testing is limited or unavailable. Skills testing is by appointment through DETU and the appointment system is updated in real time; specific wait times vary by location and season and are not published — confirm current availability with the Connecticut DMV.

Your test vehicle: You must supply your own representative commercial vehicle for the class you're testing for; the DMV does not provide a test vehicle. The vehicle cannot carry loaded cargo, cannot bear farm/transporter/dealer/repairer plates, cannot use a truck-tractor to represent a Class B, and a trailer cannot exceed 48 feet.

Endorsements available in Connecticut

Connecticut offers the standard federal endorsements. Adding one usually means an extra knowledge test (and a skills test for passenger and school bus). Tap an endorsement for the full federal process and cost:

• HHazmat — Connecticut is NOT one of the eight TSA self-managed hazmat states, so hazmat uses the standard federal process: pass the hazmat knowledge test, then complete the TSA Security Threat Assessment (fingerprints/background check) through the Universal Enrollment Services vendor (IDEMIA/IdentoGO) at universalenroll.dhs.gov — not at the DMV. The published TSA application and fingerprint fee is about $85.25 (confirm current amount with TSA/IdentoGO). Minimum age 21.
• NTanker — Tank vehicle endorsement — $5 knowledge test.
• XHazmat + Tank — Combined hazmat + tank; requires the hazmat TSA screening.
• PPassenger — Passenger endorsement; requires ELDT for first-timers and a passenger-vehicle skills test.
• SSchool Bus — School bus endorsement; requires the P endorsement plus school-bus ELDT and testing.
• TDoubles/Triples — Double/triple trailers (Class A); knowledge test only, no separate skills test.

CDL disqualifications

Disqualifying offenses are set by federal law (49 CFR 383.51) and apply in every state — including offenses in your personal vehicle. Connecticut applies the federal 49 CFR 383.51 disqualification framework (major offenses, serious traffic violations, railroad-crossing and out-of-service violations), carried into Connecticut General Statutes Title 14. Connecticut also checks your FMCSA Drug and Alcohol Clearinghouse status before issuing or upgrading a CLP or CDL, so an unresolved Clearinghouse prohibition will block the transaction.

Full federal detail: CDL disqualifications explained.

Military skills-test waiver

Connecticut participates in the federal Military Skills Test Waiver program, which lets qualifying service members and recent veterans with heavy-vehicle experience skip the CDL skills test if they still meet all FMCSR criteria and pass the required knowledge tests. Confirm the current application form and eligibility window with the Connecticut DMV.

Connecticut CDL FAQ