⚡ CDL Quick Facts
| Test Length | Varies by endorsement |
|---|---|
| Sections | General Knowledge + Endorsement Tests + Skills Test |
| Scoring | 80% to pass (most states) |
| Cost | $50–$100 for license (varies by state) |
| Format | Written tests + driving skills test |
| Who Takes It | Anyone seeking a commercial driver's license |
What is the CDL?
Getting your CDL (Commercial Driver's License) involves both written knowledge tests and a driving skills test. The written portion covers general knowledge, plus any endorsement tests you need (hazmat, tanker, doubles/triples, passenger, school bus). Every state follows federal FMCSA standards, but testing fees and procedures vary.
Test Format & Sections
The CDL covers the following areas: General Knowledge + Endorsement Tests + Skills Test. Each section is designed to test specific competencies required for Anyone seeking a commercial driver's license.
Scoring
Check the official CDL website for current scoring information and what constitutes a competitive score for your goals.
📖 Best CDL Prep Books 2025–2026
We reviewed the top-rated prep books and picked the ones actually worth your money. No sponsored picks.
View on Amazon →How Long Should You Study?
Most students study for 2-4 months for the CDL. Start with a diagnostic test, focus on weak areas, and take multiple practice tests before the real exam.
Top Study Tips
- Take a practice test first. Know where you stand before you start studying.
- Focus on weak areas. Don't waste time on sections you've already mastered.
- Use official materials. Third-party questions don't always match the real test style.
- Time yourself. Practice under real test conditions.
Free Practice Resources
- Check the official CDL website for free practice materials and study guides.
Best CDL Prep Books
We reviewed the top-rated CDL prep books and picked the ones that are actually worth your money. No sponsored recommendations — just honest reviews based on content quality, practice questions, and real student feedback.
📖 Best CDL Prep Books 2025–2026
We reviewed the top-rated prep books and picked the ones actually worth your money. No sponsored picks.
View on Amazon →