Free CDL preparation

CDL practice tests

Prepare for your CLP knowledge tests and CDL endorsements with immediate feedback, flashcards, and realistic exam simulation.

50 states3 learning modes9 categories

Select your state

View state practice tests →

Browse all 50 states

Alabama Alaska Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming

Choose a test

What are you studying?

Select a state above or begin with the nationwide federal topics below. Your best scores are saved on this device without requiring registration.

Required for every CDL applicant

General Knowledge

Core commercial-driving rules, safe operation, emergencies, cargo, communication, and vehicle control.

Choose learning mode →AB

For vehicles equipped with air brakes

Air Brakes

Air-brake components, inspections, warning devices, stopping, and safe brake operation.

Choose learning mode →CV

For Class A tractor-trailer applicants

Combination Vehicles

Coupling, uncoupling, trailer control, rollover prevention, and combination-vehicle inspection.

Choose learning mode →HM

For the H endorsement

Hazardous Materials

Hazard classes, shipping papers, placards, loading rules, emergencies, and secure transportation.

Choose learning mode →TN

For the N endorsement

Tanker Vehicles

Liquid surge, outage, smooth control, inspection, and safe operation of tank vehicles.

Choose learning mode →PV

For the P endorsement

Passenger Vehicles

Passenger safety, loading, prohibited practices, emergency equipment, and vehicle inspection.

Choose learning mode →SB

For the S endorsement

School Bus

Student loading, danger zones, warning systems, railroad crossings, and emergency procedures.

Choose learning mode →DT

For the T endorsement

Doubles & Triples

Converter dollies, coupling order, inspections, handling, and preventing trailer rollover.

Choose learning mode →PT

Prepare for the vehicle inspection test

Pre-Trip Inspection

Engine compartment, cab checks, brakes, lights, coupling, tires, suspension, and safety equipment.

Choose learning mode →

ELDT preparation

Sample ELDT practice tests

Preview the type of knowledge covered during ELDT theory training.

Class ACombination vehicle theory →Class BStraight truck and bus theory →HazMatHazardous materials theory →

Study responsibly

Practice. Review. Repeat.

These original study materials cover common federal CDL topics. State-specific pages help students organize their preparation, but users should always review the current official CDL manual published by their state.

After earning your permit and completing ELDT theory, explore hands-on CDL training with Patriot CDL.