Free CDL Practice Test 2026

Prepare to pass your Commercial Driver's License exam on the first try. Our free CDL study guide covers every section of the test with practice questions, detailed explanations, and diagrams — updated for 2026 regulations.

All 3 CDL classes covered — Class A, Class B, and Class C

Endorsement prep — hazmat, tanker, doubles/triples, passenger, school bus

Diagrams and visual aids for pre-trip inspection and air brakes

Practice questions modeled after real DMV/DOT exams

Updated for 2026 FMCSA regulations and testing standards

100% free — no hidden fees or sign-up walls

Curriculum

1General knowledge — vehicle inspection, basic control, and safe driving

2Air brakes — components, inspection, and stopping distances

3Combination vehicles — coupling, uncoupling, and rollover prevention

4Hazardous materials — placards, loading rules, and emergency procedures

5Pre-trip inspection — step-by-step walkaround and in-cab checks

6Road signs and signals — regulatory, warning, and guide signs

Frequently Asked Questions

How many questions are on the CDL test?

The general knowledge test typically has 50 questions, and you need to score at least 80% to pass. Endorsement tests vary from 20 to 30 questions depending on your state.

How should I study for the CDL exam?

Start with the general knowledge section, then focus on endorsements you need. Take practice tests repeatedly until you score 90%+ consistently. Study the CDL manual from your state's DMV as well.

What is the CDL pass rate?

First-time pass rates vary by state but average around 50-60% for the written test. With proper preparation using practice tests, most students pass on their first attempt.

Do I need a CDL to drive a truck?

You need a CDL to operate any commercial motor vehicle (CMV) with a gross vehicle weight rating (GVWR) over 26,001 pounds, vehicles designed to transport 16+ passengers, or vehicles carrying hazardous materials.

Full CDL practice tests with timed exam mode are coming soon. Start studying with the resources below.

Start CDL practice Read the 2026 study guide