CDL Class A (Commercial Driver's License — Class A General Knowledge) — Free Online Mock Test
US Commercial Driver's License Class A · 50-question knowledge test · pass 80% · pre-trip inspection, air brakes, combinations. · Official language: English.
CDL Class A exam at a glance
CDL Class A full-length mock tests
Attempt 50 full-length CDL Class A mock tests, each a distinct question set built on the real 75-question, 90-minute pattern — with instant scoring and section-wise analysis. The first 3 are free.
CDL Class A key facts & eligibility
| Conducting body | Issued by your US state licensing agency under federal standards set by the Federal Motor Carrier Safety Administration (FMCSA) |
|---|---|
| Official website | fmcsa.dot.gov ↗ |
| Mode | A Class A commercial driver’s licence lets you operate combination vehicles (a gross combination weight rating of 26,001 lb or more, towing a unit over 10,000 lb). Since February 2022, first-time applicants must complete Entry-Level Driver Training (theory plus behind-the-wheel) from a provider on FMCSA’s Training Provider Registry before taking the state knowledge and skills tests. |
| Frequency | On demand — tests are scheduled through your state licensing agency. |
| Scoring & marking | A written knowledge test (General Knowledge, plus Combination Vehicles and Air Brakes for Class A) followed by a skills test in three parts — vehicle inspection, basic controls and an on-road drive. Knowledge tests are typically passed at 80% (states follow the AAMVA model); the skills test is scored against defined criteria. |
| Language | English — federal rules require CDL knowledge and skills tests to be conducted in English. |
Who is eligible for CDL Class A?
Generally at least 18 (for intrastate driving) or 21 (for interstate or hazardous-materials), with a valid driver’s licence, a DOT medical certificate, and completed ELDT for the licence class or endorsement you seek.
Last verified July 2026 against FMCSA — Commercial Driver’s License, FMCSA — Entry-Level Driver Training. Always confirm current details on the official website before you register.
CDL Class A section breakdown
The CDL Class A mock test on Wrexa Edge replicates the real exam's section structure — same names, same question count per section, same time limits. No inter-section breaks — the timer runs continuously.
-
General Knowledge (50 Q)
-
Air Brakes Endorsement (25 Q)
CDL Class A scoring & marking scheme
Strategy: CDL Class A has no negative marking. Attempt every question — blank answers cost you potential marks but cannot pull your score down.
Scale: CDL Class A (pass 80%).
How CDL Class A is conducted
- Mode
- Test format
- Backtracking
- Mark for review
CDL Class A time strategy
With 75 questions in 90 minutes, you have about 72 seconds per question on average. Successful candidates aim for the following pacing on each section:
- General Knowledge (50 Q)
- Air Brakes Endorsement (25 Q)
Wrexa Edge's analytics show your actual time-per-question after every mock so you can spot which sections you're losing time on.
CDL Class A topics covered
Across the 50 Wrexa Edge variants of CDL Class A, the following topics appear most often (sample distribution from one variant):
General Knowledge (50 Q)
- CDL — Air Brakes · 10
- CDL — Regulations · 8
- CDL — Driving · 6
- CDL — Combinations · 5
- CDL — Hazardous Conditions · 5
- CDL — Inspection · 4
- CDL — Cargo · 4
- CDL — Space Management · 3
Air Brakes Endorsement (25 Q)
- CDL — Regulations · 5
- CDL — Combinations · 4
- CDL — Driving · 3
- CDL — Cargo · 3
- CDL — Air Brakes · 3
- CDL — Hazardous Conditions · 2
- CDL — Hazmat · 2
- CDL — Emergencies · 2
CDL Class A difficulty calibration
Foundation tier. Foundation-level: covers core concepts taught up to high school. Suitable for first-time test takers.
US Commercial Driver's License Class A · 50-question knowledge test · pass 80% · pre-trip inspection, air brakes, combinations. · Official language: English.
Verified content — Wrexa Edge's CDL Class A bank has been deeply curated with real exam-aligned content (estimated 100% syllabus coverage).
How Wrexa Edge prepares you for CDL Class A
- Real test-day interface
- 50 distinct variants
- Detailed analytics
- Spaced repetition (Notebook)
- Optional proctoring
- Free to start
Expert take: what CDL Class A really tests
A Class A CDL now requires federally-mandated Entry-Level Driver Training before the state tests, then a knowledge test (General Knowledge, Combination Vehicles, Air Brakes) and a three-part skills test. The pre-trip inspection — recited aloud — is where many first-time applicants fail, so it deserves outsized rehearsal.
Preparation tips
- Complete ELDT with a Training Provider Registry provider first; you cannot test without it.
- Rehearse the pre-trip inspection out loud until it is word-perfect — it is the top failure point.
- Study your own state’s CDL manual, since the knowledge questions come straight from it.
Common mistakes to avoid
- Booking the skills test before ELDT is completed and recorded.
- Under-practising the spoken pre-trip inspection and basic-control manoeuvres.
CDL Class A study plan
A phase-by-phase roadmap from your first concept to test-ready. Stretch or compress each phase to fit the time you have before your attempt.
- Complete Entry-Level Driver Training with a Training Provider Registry provider
- Study your state CDL manual for General Knowledge, Combination Vehicles and Air Brakes
- Practise the knowledge tests to the ~80% standard
- Memorise and rehearse the pre-trip inspection out loud
- Practise basic vehicle-control manoeuvres (backing, alley dock, offset)
- Learn air-brake checks cold
- Log behind-the-wheel practice for the on-road drive
- Rehearse shifting, lane changes, turns and hazard scanning
- Do a full mock skills test
Where CDL Class A can take you
A strong CDL Class A result opens up these careers and higher-study paths:
- Class A truck driving
- Broadest driving privileges
- In-demand trade
- Endorsement pathway
Best books & official prep for CDL Class A
- Your state’s Commercial Driver License Manual (AAMVA-based) — State DMV / AAMVA
- CDL practice-test apps for Class A endorsements — Various
Official practice: Study your state’s CDL manual and complete ELDT with a registered provider; practise the pre-trip inspection verbally, a common failure point on the skills test.
Previous-year papers: States do not release the live test bank; AAMVA-based practice questions mirror the real knowledge tests.
Frequently asked questions
- What is the CDL Class A exam pattern?
- Commercial Driver's License — Class A General Knowledge contains 75 questions across 2 sections: General Knowledge (50 Q), Air Brakes Endorsement (25 Q). Total duration is 90 minutes (about 72 seconds per question).
- Does CDL Class A have negative marking?
- No — CDL Class A has no negative marking. Each correct answer is worth 1 mark, so attempt every question.
- How is CDL Class A scored?
- Scaled score range: 100 to 1000. CDL Class A (pass 80%).
- How can I practise CDL Class A online for free?
- Wrexa Edge gives you 3 free full-length CDL Class A mock tests — with instant scoring, detailed explanations and analytics — plus 47 more with Pro. Start practising in under a minute, no card required.
- What is the difficulty level of CDL Class A?
- CDL Class A is rated Foundation difficulty on Wrexa Edge. Foundation-level: covers core concepts taught up to high school. Suitable for first-time test takers. US Commercial Driver's License Class A · 50-question knowledge test · pass 80% · pre-trip inspection, air brakes, combinations. · Official language: English.
- How long is the CDL Class A exam?
- CDL Class A runs for 90 minutes total across 2 sections. On Wrexa Edge the timer is enforced exactly as on the real exam — including no inter-section breaks.
- What topics are covered in CDL Class A?
- CDL Class A is split into: General Knowledge (50 Q), Air Brakes Endorsement (25 Q). Each section is timed and weighted separately. US Commercial Driver's License Class A · 50-question knowledge test · pass 80% · pre-trip inspection, air brakes, combinations. · Official language: English.
- What tools or aids are allowed during CDL Class A?
- No special tools are required. Note: real exam is proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow you can enable.
- Is the CDL Class A test adaptive?
- No — CDL Class A is a fixed-form (linear) test. Every candidate sees the same number of questions per section.
- How many CDL Class A mock tests does Wrexa Edge offer?
- Wrexa Edge generates 50 distinct CDL Class A variants — each with different question content, not just shuffled options — the first 3 free for everyone and 47 more with Pro. That's 3750 unique practice questions in the real test-day interface.
- Is there a free CDL Class A test series 2026?
- Yes. The Wrexa Edge CDL Class A test series for 2026 gives you 3 free full-length mock tests (50 in total) plus subject-wise and topic-wise tests — instant scoring and detailed analysis, no card required.
- Are CDL Class A previous year question–style papers included?
- Every CDL Class A mock is modelled on the official exam pattern and the style of previous years' papers — the same 75-question structure, sections and marking — so your practice mirrors the real paper you'll sit.
- Which is the best free CDL Class A mock test online?
- Wrexa Edge's CDL Class A mock test replicates the real exam interface, timing and marking scheme, with instant score, section-wise analysis and 50 fresh variants — a strong free choice for 2026 preparation.
- Can I take the CDL Class A mock test on mobile?
- Yes. CDL Class A mock tests run in any browser on mobile, tablet or desktop — no app or download needed. Start on your phone and your progress and analytics sync when you sign in.
- What is the CDL Class A syllabus?
- The CDL Class A syllabus maps to its 2 sections: General Knowledge (50 Q), Air Brakes Endorsement (25 Q). Wrexa Edge's mock tests cover the complete syllabus topic by topic — see the topics-covered breakdown above — so you practise every area at real exam difficulty.
- What is the eligibility for CDL Class A?
- Generally at least 18 (for intrastate driving) or 21 (for interstate or hazardous-materials), with a valid driver’s licence, a DOT medical certificate, and completed ELDT for the licence class or endorsement you seek. Wrexa Edge focuses on realistic CDL Class A practice: 3 free full-length mocks in the exact exam pattern, ready whenever you are.
- When is the CDL Class A exam and how should I prepare?
- Official CDL Class A exam dates are announced by the conducting body for each cycle — check the latest notification for the current schedule. To be ready, follow a phased study plan and take full-length timed mocks; Wrexa Edge gives you 3 free CDL Class A mocks with instant scoring so you can track your readiness week by week.
Related exams & practice tests
Candidates preparing for CDL Class A also practise these on Wrexa Edge:
Browse more: All Tech & IT Certifications exams → · All United States exams → · Full exam catalog →
Ready to ace CDL Class A?
Join thousands of candidates practising on Wrexa Edge. Free signup, 50 variants per exam, instant scoring.
Start practising free →