Overview
One free CDL practice question every day, with the answer explained. By CDL Prep Hero.
Studying for your CDL permit or knowledge test? Click the icon once a day for a new practice question covering general knowledge, air brakes, combination vehicles, hazmat, tank, passenger and permit rules. Pick an answer and you'll see instantly whether you were right, with a short explanation and where the rule comes from (federal 49 CFR rules or the CDL manual). - 25 original questions that rotate daily - Works offline, no account, no data collected - Links to free full-length practice tests at cdlprephero.com and the CDL Prep Hero app for iPhone and Android
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Details
- Version1.0.0
- UpdatedOctober 27, 2026
- Size8.12KiB
- LanguagesEnglish
- DeveloperWebsite
Email
david.alan.shapiro@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes