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.
Foundation
United States
Tech & IT Certifications
75 questions
90 min
50 distinct variants
Start free practice test →
CDL Class A exam at a glance
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.
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General Knowledge (50 Q)
50 questions · 60 minutes · ~72 sec/question
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Air Brakes Endorsement (25 Q)
25 questions · 30 minutes · ~72 sec/question
CDL Class A scoring & marking scheme
100–1000
Scaled score range
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
Proctored — Wrexa Edge mirrors this with a webcam-based proctoring flow (face detection, room scan, fullscreen lock, tab-switch detection).
Test format
Linear / fixed-form — every candidate sees the same number of questions per section.
Backtracking
Allowed — you can revisit and change answers within a section.
Mark for review
Available — flag tough questions and return to them before submitting the section.
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)
Target ~72 sec/question. If a question takes more than 108 seconds, mark for review and move on.
Air Brakes Endorsement (25 Q)
Target ~72 sec/question. If a question takes more than 108 seconds, mark for review and move on.
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
Sample CDL Class A questions
A preview of real practice questions from the Wrexa Edge CDL Class A bank — the same style, phrasing and difficulty you'll face on test day. Full solutions unlock free inside the mock.
General Knowledge (50 Q) · CDL — Regulations
Q1. Hours-of-Service rules exist to:
Why: Correct answer: D — Limit driving time and require rest to reduce fatigue-related crashes. Topic: CDL — Regulations.
Air Brakes Endorsement (25 Q) · CDL — Hazardous Conditions
Q2. Black ice is dangerous because it is:
Why: Correct answer: A — A thin, clear layer of ice that makes the road look wet. Topic: CDL — Hazardous Conditions.
General Knowledge (50 Q) · CDL — Combinations
Q3. Before driving, the trailer is properly coupled when:
Why: Correct answer: A — The kingpin is locked in the fifth wheel and the connection is visually inspected. Topic: CDL — Combinations.
Air Brakes Endorsement (25 Q) · CDL — Hazardous Conditions
Q4. If your vehicle starts to hydroplane, you should:
Why: Correct answer: B — Release the accelerator and not brake hard; let the vehicle slow. Topic: CDL — Hazardous Conditions.
General Knowledge (50 Q) · CDL — Regulations
Q5. When approaching a railroad crossing with a commercial vehicle carrying hazardous loads, you must:
Why: Correct answer: B — Stop, look, and listen before proceeding. Topic: CDL — Regulations.
Air Brakes Endorsement (25 Q) · CDL — Space Management
Q6. The "no-zones" of a large truck refer to:
Why: Correct answer: C — The blind spots where other vehicles disappear from view. Topic: CDL — Space Management.
These are a handful of the 3750 unique CDL Class A questions across all 50 Wrexa Edge variants — start a free mock to attempt the full set with instant scoring.
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
Our cert skin mirrors the actual CDL Class A testing software — same timer, palette, tools, and navigation.
50 distinct variants
3750 unique practice questions, each variant a fresh test — not just shuffled options.
Detailed analytics
Scaled score, section accuracy, topic-wise heatmap, time-per-question — see where to focus after every attempt.
Spaced repetition (Notebook)
Wrong answers and flagged questions flow into an SM-2 spaced-repetition deck so you actually retain what you learn.
Optional proctoring
Browser-based face-api detection (no install) — turn it on to simulate real CDL Class A test-day conditions.
Free to start
No credit card. Sign up, pick a variant, and your first CDL Class A mock starts in under a minute.
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.
1
Phase 1 — Learn the syllabus
Weeks 1–4
- Work through every section — General Knowledge (50 Q), Air Brakes Endorsement (25 Q) — from your core study material
- Make short notes and a formula/fact sheet you can revise quickly
- Attempt topic questions right after finishing each area
2
Phase 2 — Practice & sectionals
Weeks 5–8
- Solve previous-year and practice questions section by section
- Time yourself on General Knowledge (50 Q) and your weakest areas
- Keep an error log and revisit every mistake weekly
3
Phase 3 — Full-length mocks
Weeks 9–12
- Take full-length CDL Class A mocks in the real test interface
- Analyse accuracy, time per question and silly mistakes after each mock
- Revise from notes and re-attempt only weak-topic questions
Where CDL Class A can take you
A strong CDL Class A result opens up these careers and higher-study paths:
Cloud, DevOps & security roles
A recognised certification unlocks engineer, administrator and architect roles at product and services firms.
Salary & promotion boost
Certified professionals command higher pay and are prioritised for internal promotions and project leads.
Remote & freelance work
In-demand skills open global remote roles and independent consulting opportunities.
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 10 free full-length CDL Class A mock tests — with instant scoring, detailed explanations and analytics — plus 40 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 10 free for everyone and 40 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 10 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?
- Eligibility for CDL Class A — age, qualification and number of attempts — is set by the official conducting body and can change each cycle, so always confirm the current official notification before applying. Wrexa Edge focuses on realistic CDL Class A practice: 10 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 10 free CDL Class A mocks with instant scoring so you can track your readiness week by week.
Ready to ace CDL Class A?
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