CDL 상업용 운전면허 in Iowa

Iowa DOT, Motor Vehicle Division

Real written-test languages: English

Testing agency: Iowa DOT
Written-test languages: English
To pass: 80% (General Knowledge 40/50; may miss 10)
Fee: No separate knowledge-test fee; CLP $12 (1 yr), CDL $8/year (8-yr)
Retake policy: To confirm (no official knowledge-test wait/attempt limit published)
Languages note: Iowa's 19-language knowledge-test program is the operator (non-commercial) test only; commercial testing is English only (federal). HazMat endorsement English only. FMCSA 49 CFR 391.11 requires English proficiency to drive commercially.

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).