CDL Prep: CDL Practice Test
Bilingual study with manuals
About
Prepare for your CDL knowledge test with bilingual study materials. This app offers an exam simulator, section-specific question banks, and a pre-trip inspection trainer. All content is available offline, making it a comprehensive study tool.
What's New in CDL Prep
1.3.2
September 25, 2026
We improved install measurement for White Hat ads on Meta without recording your study activity. We also updated the privacy information and fixed a few stability issues.
MoreDeveloper apps
FAQ
Does CDL Prep have ads?
Yes, CDL Prep is free and supported by ads. You can study offline or decline ads, and the app functions exactly the same.
How does CDL Prep help me learn the material?
CDL Prep uses spaced repetition (Leitner system) to repeatedly ask you questions you miss until you master them. Every question also cites the official manual section it comes from for verification.
Can I use CDL Prep offline?
Yes, everything in CDL Prep works offline, including the question bank, simulator, your progress, and any downloaded manuals.
What languages does CDL Prep support?
The interface and questions are available in English, Spanish, French, Portuguese, Russian, Ukrainian, Chinese, Arabic, and Punjabi. Bilingual mode displays your language and English side-by-side.
Is CDL Prep affiliated with any government agency?
No, CDL Prep is an independent study app and is not affiliated with any government agency, DMV, FMCSA, or AAMVA. It is always recommended to confirm current requirements with your state's licensing agency.
How does the exam simulator in CDL Prep work?
The exam simulator uses your state's real format, including official question counts and passing scores, not generic ones. Answers are shuffled by default to ensure you learn the material, not just the answer position.
What is the readiness score in CDL Prep?
CDL Prep provides a readiness score from 0 to 100 for each section. This score is computed in a way that cannot be fooled, meaning achieving five correct answers in a row does not necessarily indicate readiness.
How often is CDL Prep updated?
The app was last updated on September 25, 2026, with version 1.3.2. This indicates a relatively recent update, suggesting ongoing maintenance and potential improvements.
