The CDL general knowledge test has a 40–50% fail rate. Don't be a statistic. Study smart. Pass the first time.
The CDL written test isn't just a formality. Failing has real financial consequences that add up fast.
CDL knowledge test fees vary by state but typically range from $150–$300 per attempt. In some states, you pay every time you retake.
Most states require a waiting period between test attempts. That's 2–4 weeks of lost driving income and delayed job start dates.
CDL drivers earn $55,000–$85,000/year. Every week you're not driving is money left on the table. Failing sets back your career.
Most states require an 80% passing score on the CDL general knowledge test. That means you can only miss 4 out of 20 questions on the real exam.
Try 10 free questions to see how we work. When you're ready to pass — go full access.
Start with 10 free questions right now — no signup required. See where you stand and what topics you need to study.
Use our comprehensive domain-by-domain study guide to lock in the numbers, rules, and facts you'll see on test day.
Take the full 60-question timed practice exam as many times as you need. Repeat until you're consistently hitting 85%+.
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Everything you need to know before you start
Our CDL practice test includes 60 General Knowledge questions with a 46-minute timer, matching the format and difficulty of the actual CDL written exam.
The complete CDL bundle — including the 60-question practice test, full study guide, 50 flashcards, and printable cram sheet — is $97 one-time with 6 months of access.
The CDL General Knowledge exam covers driving safely, shifting gears, backing safely, seeing hazards, communicating, space management, speed management, night driving, and pre-trip inspections.
Yes. The first 10 questions are completely free with no account or credit card required.