CDL Prep Exam 2026: Permit
Prepare for your commercial driver's license knowledge test with focused practice, realistic mock exams and a study plan.
About CDL Prep Exam 2026: Permit
Highlights
Every core CDL topic
General Knowledge, Air Brakes, Combination and more
Endorsement practice
HazMat, Tank, Doubles and Triples, Passenger, School Bus
Timed mock exams
Build confidence before the test
Clear explanations
Read why after each answer
Review your mistakes
Focus on your weak topics
A study plan for your date
Daily targets and reminders
What CDL Prep Exam 2026: Permit does
CDL permit test prep with practice tests, timed mock exams, flashcards and a study plan, covering General Knowledge, Air Brakes, Combination Vehicles, HazMat, Tank Vehicles, Doubles and Triples, Passenger Vehicles, School Bus and Pre-Trip Inspection.
- Best for: US drivers studying for a commercial driver's licence knowledge test.
- Worth knowing: An independent study tool, not affiliated with the FMCSA, any state DMV or a government agency. It has no actual or official exam questions, and the state CDL manual remains the official source.
- Price: Free to download, with optional Premium.
Common questions
Are these the real CDL exam questions?
No. The app does not contain actual, leaked or official exam questions. It is practice for the same topics.
Is it an official DMV app?
No. It is an independent study tool, not affiliated with the FMCSA, any state DMV or a government agency. Always check your state's latest CDL manual.
Which endorsements does it cover?
HazMat, Tank Vehicles, Doubles and Triples, Passenger Vehicles and School Bus, along with General Knowledge, Air Brakes, Combination Vehicles and Pre-Trip Inspection.
Guides for CDL Prep Exam 2026: Permit
CDL Practice Test 2026: All 9 Exams Explained
The nine CDL exams explained: which ones you need, what each covers, and how they are scored.
GuidesCDL Pre-Trip Inspection: What Examiners Want to Hear
The pre-trip is graded on what you say — the three-part script examiners listen for at every item.
How-ToA CDL Study Plan That Works: 20 Questions a Day
A two-week CDL study plan: twenty questions a day, subject by subject, and when to book the test.
GuidesDo You Need a Doubles, Triples or Tanker Endorsement?
What counts as a tank vehicle, when doubles need the T endorsement, and which require a driving test.
How-ToCDL Backing and Coupling, Step by Step
The six backing rules and the full coupling and uncoupling sequence, straight from the CDL manual.
GuidesCDL Cargo Securement: How Often You Must Re-Check
The cargo re-check intervals, tiedown counts and working load limit rules the CDL test asks about.
How-ToCDL Following Distance and the No-Zone, Explained
The one-second-per-10-feet following distance rule, worked through, plus the four no-zones.
GuidesCDL Night Driving and Hours of Service Rules
The night driving and hours of service rules the CDL test asks about, with the exact numbers.
GuidesCDL Railroad Crossings: Who Must Always Stop?
Which vehicles must stop at every railroad crossing, how far from the rail, and why you never shift.
GuidesCDL Skid Recovery and Emergency Manoeuvres
Correct a drive-wheel skid, stop a trailer jackknife, and handle brake fade on a long downgrade.
GuidesCDL Weight Limits: 80,000 lbs, Axles and the Bridge Formula
The 80,000 lb gross, 20,000 lb axle and 34,000 lb tandem limits, and what the bridge formula does.
GuidesCDL Road Signs and Signals You Must Know
The shape and color system behind US road signs, and the ones that matter most in a heavy vehicle.