Not affiliated with any state DMV or AAMVA. Original questions based on the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, revised March 2026).
CDL general knowledge test: practice test with original questions from a state CDL handbook
Practice for the commercial driver's license (CDL) general knowledge test with 67 original questions written from a state CDL handbook based on the national model manual (Texas DL-7C, revised March 2026), in English and Spanish.
These 67 practice questions were written from Texas Commercial Motor Vehicle Drivers Handbook (DL-7C) (Revised March 2026) and checked against it on Oct 28, 2026.
67 questions · Modes: Study, Topic drill, Daily 5
Guide: CDL General Knowledge Test: What to Study from the Model Handbook
About this test
Practice for the CDL general knowledge test with original questions written from the Texas Commercial Motor Vehicle Drivers Handbook (DL-7C, revised March 2026), which follows the national AAMVA model CDL manual used by most states. Every correct answer is backed by a passage of the handbook and checked by two independent verifiers.
- Study: every question with a short explanation.
- Topic drills: vehicle inspection, basic control and shifting, seeing, space and speed, hazards, emergencies and night driving, cargo and fitness to drive.
- Mock test: not offered, because the handbook states the 80% pass mark but not the number of questions.
The questions are written in our own words in English and Spanish; this is not any state's question bank. State-specific rules (such as Texas commercial rules) and endorsement tests are not covered.
Topics
- ABS indicator light · 1
- ABS malfunction · 1
- Aiming a fire extinguisher · 1
- Air pressure buildup · 1
- Backing speed and gear · 1
- Backing toward the driver's side · 1
- Backing with a helper · 1
- Bridges freeze first · 1
- Cargo fire in a van · 1
- Cargo van height · 1
- Checking cargo covers · 1
- Convex mirrors · 1
- Dealing with tailgaters · 1
- Definition of a hazard · 1
- Dimming headlights · 1
- Distraction defined · 1
- Double clutching · 1
- Downshifting before a curve · 1
- Drive wheels spinning · 1
- Drowsiness · 1
- Drugs that hide fatigue · 1
- Effects of overloading · 1
- Empty truck braking · 1
- En-route cargo securement check · 1
- Equivalent drinks · 1
- Exhaust system defects · 1
- Following distance rule · 1
- Front tire tread depth · 1
- Front-wheel skid · 1
- Gear before a downgrade · 1
- Hand-held phone disqualification · 1
- How far ahead to look · 1
- Hydroplaning · 1
- Left turns · 1
- Livestock loads · 1
- Loading heavy cargo low · 1
- Loose wheel nuts · 1
- Minimum tie-downs · 1
- Moving injured people · 1
- Out of service · 1
- Racing a train · 1
- Radiator cap safety · 1
- Re-checking cargo · 1
- Required emergency equipment · 1
- Retarders on slippery roads · 1
- Right turns · 1
- Road rage · 1
- Sealed loads · 1
- Securing the vehicle before walk-around · 1
- Signs of ice on the road · 1
- Sobering up takes time · 1
- Speed and braking distance · 1
- Speed and visible distance · 1
- Speed reduction on wet and snowy roads · 1
- Steering grip · 1
- Stopping distance components · 1
- Stuck on the tracks · 1
- Testing hydraulic brakes · 1
- Texting risk · 1
- Tie-down count by length · 1
- Tire failure response · 1
- Triangle placement on divided highway · 1
- Warning devices timing · 1
- Water on fires · 1
- Weight on the steering axle · 1
- Wet brakes · 1
- Work zone speed · 1
Sources and version
- Texas Commercial Motor Vehicle Drivers Handbook (DL-7C)Covers: Revised March 2026
Covers: Texas DL-7C, revised March 2026 · Verified current as of Oct 28, 2026
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How this page was made
Built from the sources listed above and reviewed before it was published. Where the source licence allows it the questions keep the source wording; otherwise they are original questions based on the source. Every answer shows its source. This is not legal, immigration, medical or financial advice.