CT · CDL Class A

Connecticut Class A CDL Practice Questions and Study Guide

Use these 100 Connecticut Class A CDL practice questions to review the subjects represented in the saved bank, including general knowledge, air brakes, combination vehicles, doubles and triples, tank vehicles, hazardous materials, passenger vehicles, and school buses. Each item includes four answer choices and an explanation, but this practice format is not the official Connecticut exam format or question count. Connecticut requires the Class A combination test in addition to general knowledge, while air-brake and endorsement-specific testing applies only when the vehicle, equipment, cargo, or intended operation makes it relevant. Applicants should confirm current CLP identity, medical, self-certification, Clearinghouse, ELDT, and skills-test requirements before relying on any study aid.

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Every test draws only from the Connecticut CDL Class A question bank.

20questionsStart Class A test → 40questionsStart Class A test → 60questionsStart Class A test → 80questionsStart Class A test →

LICENSING GUIDE

What to know before you test

Use this overview together with the latest official guidance linked below.

Confirm that Class A matches the combination you plan to drive

Connecticut Class A authorizes qualifying combinations of vehicles with a gross vehicle weight rating of 26,001 pounds or more when the vehicle being towed has a GVWR over 10,000 pounds. Connecticut's current testing chart requires the Combination Vehicles test for Class A in addition to the general knowledge test. Air Brakes is required when the vehicle is equipped with air brakes. Passenger, school bus, tank, hazardous-materials, and doubles/triples testing applies only when the applicant seeks the corresponding operation or endorsement. This mixed practice bank intentionally includes those conditional modules so you can study a broad Class A scope without assuming that every applicant needs every specialty test.

Meet the Connecticut CLP identity, medical, and age requirements

Connecticut requires a commercial learner's permit before the CDL. The DMV says an applicant must be at least 18 for intrastate commercial driving and at least 21 for interstate operation or hazardous-material hauling. Current CLP instructions require a valid Connecticut driver license, REAL ID documentation, a Social Security number, proof of legal presence, two proofs of Connecticut residence, self-certification, and the commercial-license application. CLP and CDL applicants must also have a valid medical examiner certificate on file; beginning June 16, 2025, Connecticut obtains that information electronically from the National Registry rather than accepting the paper MCSA-5876 from applicants. DMV also checks Drug and Alcohol Clearinghouse status for CDL and CLP transactions.

Prepare for the knowledge tests and complete ELDT when required

Connecticut's current general knowledge test has 50 questions and requires 40 correct answers. For Class A, the Combination Vehicles test is also required; Connecticut lists 20 questions with 16 correct for the combination test. The state lists separate counts and passing scores for air brakes and endorsement tests, including hazardous materials, tanker, passenger, school bus, and doubles/triples. First-time Class A applicants and drivers upgrading from Class B to Class A are subject to federal Entry-Level Driver Training requirements before the Class A skills test. Use the Connecticut Commercial Driver License Manual that DMV identifies for testing on and after July 1, 2025, and match your study plan to the tests that actually apply to your vehicle and endorsements.

Prepare for the three-part skills evaluation and test vehicle rules

Connecticut's CDL skills-test page evaluates applicants on pre-trip inspection, a static course, and on-road driving. Bring the representative vehicle for the class sought, a qualified CDL driver who can legally operate it to and from the test, your valid Connecticut driver license, your valid commercial instruction permit, the validated CDL application, and any required medical-waiver documentation. The test vehicle and equipment matter because the vehicle must represent the class and privileges sought. If any part of the skills test is failed, Connecticut treats the entire skills test as failed; the applicant must submit a new application, pay the test fee again, and wait at least seven days before another skills test.

REQUIREMENTS OVERVIEW

Connecticut CDL Class A requirements

Requirements depend on the applicant and can change. Verify each item with the cited agency.

age

Connecticut Class A CLP/CDL applicants

Connecticut requires applicants to be at least 18 years old for intrastate commercial driving and at least 21 to operate interstate or haul hazardous materials.

documents

Connecticut applicants seeking a Class A commercial learner permit

Current CLP instructions require a valid Connecticut driver license, REAL ID identity documentation, Social Security number, proof of legal presence, two Connecticut-residence documents, self-certification, and the commercial-driver application. A valid medical examiner certificate must be on file, and DMV checks Clearinghouse status.

tests

Connecticut Class A applicants and applicants seeking equipment- or endorsement-specific privileges

Class A applicants must pass the general knowledge test and the Combination Vehicles test. Air Brakes applies when the vehicle is air-brake equipped; passenger, school bus, tank, hazardous-materials, doubles/triples, and other endorsement tests apply when the intended operation requires them. Applicants then complete the required CDL skills test.

passing

Connecticut CDL applicants taking current knowledge tests

Connecticut lists 50 questions with 40 correct required for the general knowledge test. It lists 20 questions with 16 correct for the Combination Vehicles, school bus, passenger, tanker, and doubles/triples tests; 25 with 20 correct for Air Brakes; and 30 with 24 correct for Hazardous Materials.

applicability

Connecticut Class A applicants using this mixed 100-question practice bank

The saved bank covers eight modules. General knowledge and combination-vehicle material are core Class A preparation; air-brake and endorsement-specific modules are conditional on the vehicle, equipment, cargo, or service. The 100-question bank is a study tool and does not represent one official Connecticut exam blueprint.

OFFICIAL REFERENCES

Sources for this guide

Open the current source before relying on licensing details.

How to get a commercial learner’s permit in CTAge, CLP documents, medical certificate, Clearinghouse, ELDT, knowledge tests, test counts and passing scoresOpen source ↗ CDL classes, endorsements, and restrictionsClass A definition and endorsement scopeOpen source ↗ Take the CDL skills test commercial driversRepresentative vehicle, required items, pre-trip, static course, on-road test, retest waiting periodOpen source ↗ Get a commercial driver’s licenseConnecticut CDL process and ELDT guidanceOpen source ↗ Connecticut Commercial Driver License Manual - Modernized Testing SystemCommercial knowledge and skills subjects, including Class A and endorsement materialOpen source ↗ Entry-Level Driver Training (ELDT)Federal ELDT applicability for first-time Class A/Class B, Class B-to-A upgrades, and first-time S/P/H endorsementsOpen source ↗