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CDL — Commercial Driver's License in Colorado
Colorado DMV (Dept. of Revenue)
📋 Exam facts
Real Colorado exam administration — from the official source
- Practice questions (this site)
- 1281
- Testing agency
- Colorado DMV
- Real written-test languages
- English · Spanish
- To pass
- 80% (federal minimum; General Knowledge 40/50, HazMat 24/30)
- Fee
- Knowledge retest fee reported ~$11.50 (official fee page not machine-readable — to confirm)
- Retake policy
- Same-day retake if an appointment slot is available; specific wait tiers to confirm
- Languages note
- CDL knowledge test in English and Spanish; the HazMat knowledge test is English only. CLP valid 1 year, not renewable.
✍️ Reviewed by the PassPrep editorial team · How we verify →
Languages, fees and rules change — confirm with the official source linked for each state. 待核 / 'To confirm' = not yet confirmed from an official source (shown honestly, never guessed). The 2025 federal English-Language-Proficiency action is roadside out-of-service enforcement, not a state test-language mandate; states set their own written-test languages (Texas and Florida moved to English-only in 2026).