CDL Study Path
Work through 10 focused modules in order, from the rules that appear most often to the details that complete your test-day readiness.
Your path to passing
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Core · Every CDLThe knowledge every commercial driver is tested on, plus the tests your license class adds.
1CDL Foundations
Start with general knowledge, safety, and emergency judgment. 4 videos.
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2Inspection & Pre-Trip
Cover the inspection flow and what to catch before rolling. 4 videos.
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3Air Brakes
Master the system that decides whether a loaded truck stops. 3 videos.
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4Combination Vehicles
Couple a tractor and trailer, then handle them as one vehicle. 2 videos.
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Endorsements & specialtiesOnly the ones you are applying for. The rest stay here for when you add them.
5Doubles & Triples
Every input amplifies as you add trailers behind the tractor. 1 video.
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6Hazardous Materials
Learn what changes when the cargo itself is the hazard. 1 video.
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7Tanker Vehicles
Handle the surge, stability, and stopping challenges of liquid loads. 1 video.
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8Passenger Transport
Put passenger safety at the center of every operating decision. 1 video.
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9School Bus
Protect students in the danger zone, at the stop, and at railroad crossings. Questions ready.
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10Longer Combination Vehicles
Federal training for two or three trailers over 80,000 pounds. Questions ready.
Review what you've studied
A mixed drill drawn from the modules you've practiced, weighted toward your weakest topics. Just starting? Take the quick diagnostic instead.
The free app adds offline study and native reminders — no account, no paywall, no ads.
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Your state's handbook
We do not copy official handbooks. Pick your state, open that agency's real handbook, then use the chapter map to drill the chapter you just read.
| Handbook chapter | Practise it here |
|---|---|
| General Knowledge, Safe Driving, Emergency, Hours of Service, Trip Planning, Communications on the Job, Driver Rights, Coercion and Whistleblower Protection, Basic Vehicle Control, Shifting and Transmissions, Fatigue and Wellness, After a Crash, Drug and Alcohol Rules, Medical Qualification | CDL Foundations |
| Vehicle Inspection, Pre-Trip Inspection, Roadside Inspections, Vehicle Maintenance and Repair, Vehicle Systems and Malfunctions | Inspection & Pre-Trip |
| Air Brakes, Vehicle Systems and Malfunctions | Air Brakes |
| Combination Vehicles, Weight Distribution, Backing and Docking | Combination Vehicles |
| Doubles and Triples | Doubles & Triples |
| Hazardous Materials, Environmental Compliance | Hazardous Materials |
| Tank Vehicles, Environmental Compliance | Tanker Vehicles |
| Passenger Transport | Passenger Transport |
| School Bus | School Bus |
| Longer Combination Vehicles | Longer Combination Vehicles |
How this path works
Use the focused guide and the lesson videos to understand the rule.
Answer the module's questions and turn each mistake into a specific repair.
Complete the module check, scheduled review, and realistic simulations here on the web.
