CDL Test Prep: Practice Exam

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About this app

The most complete CDL test prep and study guide for Android in 2025. Over 1,053 practice questions — fully audited against official CDL handbooks — covering every category truck drivers need to pass their written exam.

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📚 1,053 QUESTIONS. 9 CATEGORIES.
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• General Knowledge
• Air Brakes
• Combination Vehicles
• Tanker
• Doubles & Triples
• Hazardous Materials (HazMat)
• Passenger Transport
• School Bus
• Pre-Trip Inspection

Every question includes a plain-English explanation backed by the official CDL manual — not just the answer, but the why.

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🧪 TWO WAYS TO STUDY
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Practice Mode — work through questions at your own pace, review explanations as you go, and flag anything you want to revisit.

Exam Mode — timed, simulated CDL written test that mirrors the real format. See your score, pass/fail status, and a full breakdown when you're done.

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📊 TRACK YOUR READINESS
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Your home screen shows a live readiness score based on your actual performance — per category, not just overall. Know exactly which endorsement needs more work before test day.

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🎯 BUILT TO HELP YOU PASS
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✔ Questions verified against official CDL handbooks
✔ Detailed explanations for every answer
✔ CDL study guide and manual reference built in
✔ Progress tracking per category
✔ Bookmark questions to review later
✔ Study streak to keep you consistent
✔ Daily reminder notifications
✔ 5 color themes + dark/light mode
✔ Adjustable text size

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📋 ABOUT CDL TESTING
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Getting your Commercial Driver's License requires passing a General Knowledge written exam plus separate exams for any endorsements you need. Whether you're a first-time truck driver or upgrading your CDL, this app covers all of them in one place.

Questions are based on Federal Motor Carrier Safety Administration (FMCSA) guidelines and official state CDL handbooks. Updated for 2025–2026.

Sources:
• FMCSA CDL Model Driver Manual (PDF): https://www.fmcsa.dot.gov/sites/fmcsa.dot.gov/files/docs/2005%20CDL%20Driver%20Manual%20-July%202014%20-%20FINAL.pdf
• eCFR Title 49, Part 383 — CDL Standards: https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-383

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⚠️ DISCLAIMER
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This app is an independent study tool and is not affiliated with any state DMV, the FMCSA, or any government agency. Always refer to your official state CDL handbook as the authoritative source for your exam.

What’s new

Your CDL written exam is standing between you and your license.
This app makes sure you're ready.

1,053 questions. Every category. Every endorsement. Plain-English
explanations so you understand the why — not just the answer.

Practice at your pace or simulate the real exam. Know exactly
which categories need work before test day.