# CDL Permit Prep: Practice Test — Air Brakes, Hazmat & Class A > CDL practice test app with explanations and pre-trip inspection trainer. (iPhone/iPad app by Surabhi Agnihotri.) - Source: https://appshunter.io/ios/app/cdl-permit-prep-practice-test/id6801415326 (this page in markdown: same URL + `.md`) - Developer: [Surabhi Agnihotri](https://appshunter.io/developer/6788820308) - Category: Education, Reference - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 26.0 · 99 MB - Languages: American English, European Spanish - Released: 2026-09-06 - Data updated: 2026-10-15 - Monetization: free ## What is CDL Permit Prep? Study commercial learner's permit and CDL knowledge topics with CDL Permit Prep. The app's question bank contains 1,310 multiple-choice practice questions: 943 with national scope and 367 focused on state-specific topics. These are counts in the app, not the length or question count of any state's exam. Topics include General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Tanker, Doubles/Triples, Passenger, School Bus, Hours of Service, and Pre-Trip Inspection. REVIEW QUESTIONS AND SOURCES Read an explanation after each answer and open its source reference. Study the federal topics and state-specific material included in the app, then check your state's current CDL manual and licensing-agency guidance for requirements that apply to you. PRACTICE YOUR PRE-TRIP CHECKS Use the trainer to identify vehicle components, describe the checks you would make, and explain safety concerns. Follow your state's current CDL manual and test instructions. The trainer does not require a script; examples are optional prompts, so use your own words. Trainer feedback is for practice and is not an official test score. STUDY BY CDL CLASS AND ENDORSEMENT Choose the class and topics you want to study. Review missed questions and practice the included CDL subjects at your own pace. Some CDL question translations are still under review and may appear in English with a notice. This app is study material, not an ELDT course and not a substitute for training required by FMCSA rules. Practice is not the exam. Check your state's current commercial driver handbook and official licensing-agency information. For support, visit https://cdlpermitprep.org/support. CDL Permit Prep is an independent study product and is not an official licensing-agency service. ## Key features - 1,316 practice questions - National and state-specific topics - Explanations and source references - Pre-trip inspection trainer - Study by CDL class and endorsement - Review missed questions ## Is CDL Permit Prep safe? Not enough ratings yet to assess CDL Permit Prep. ## Is CDL Permit Prep legit? CDL Permit Prep: Practice Test appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for CDL Permit Prep is 65 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about CDL Permit Prep ### What topics does CDL Prep. cover? CDL Prep. covers a wide range of topics including General Knowledge, Air Brakes, Combination Vehicles, Hazmat, Tanker, Doubles/Triples, Passenger, School Bus, Hours of Service, and Pre-Trip Inspection. ### How many practice questions are available in CDL Prep.? The app features a question bank of 1,316 multiple-choice practice questions, with 956 of national scope and 360 focused on state-specific topics. ### Does CDL Prep. offer explanations for answers? Yes, CDL Prep. provides an explanation after each answer, allowing users to understand the reasoning and refer to source references for further study. ### Can I practice pre-trip inspections with CDL Prep.? Yes, CDL Prep. includes a trainer specifically for practicing pre-trip checks, where you can identify components, describe checks, and explain safety concerns. ### Is CDL Prep. an official licensing-agency service? No, CDL Prep. is an independent study product and is not an official licensing-agency service. It is study material and not a substitute for required training. ### What is the update frequency for CDL Prep.? The latest version of CDL Prep. is 1.0.6, which was last updated on September 29, 2026. Specific update frequency is not detailed, but it is actively maintained. ### What devices is CDL Prep. available on? CDL Prep. is available on iPhone and iPad devices, catering to users who prefer to study on Apple's mobile platforms. ### Does CDL Prep. have ads? No, CDL Prep. does not contain advertisements, providing an uninterrupted study experience for users. ## Version history (last 5 releases) ### 1.0.11 — 2026-10-12 Updated practice questions: hundreds of questions now have stronger wrong answers, clearer wording and corrected answers, checked against the FMCSA manual, state guides and federal rules. Duplicate questions were replaced with new ones, and every state permit practice test is available. ### 1.0.10 — 2026-10-08 Fixed: your study profile now saves to your CDL Permit Prep account. ### 1.0.9 — 2026-10-06 Fixed: password reset emails now arrive. Account links now open cdlpermitprep.org. ### 1.0.8 — 2026-10-05 Your baseline diagnostic now counts: see your baseline score on your plan and progress, and review every mistake you made. The handbook source no longer gives away the answer before you choose. Fewer pop-ups after your first quiz, clearer results, and small fixes. ### 1.0.6 — 2026-09-29 Updated CDL practice questions and study content. ## More apps by Surabhi Agnihotri - [DMV Practice Test: DMV Prep](https://appshunter.io/ios/app/dmv-practice-test-dmv-prep/id6788820306) - [Real Estate Exam Prep:Freehold](https://appshunter.io/ios/app/real-estate-exam-prepfreehold/id6792956348) - [RES Exam Prep: Freehold](https://appshunter.io/ios/app/res-exam-prep-freehold/id6801366531) All apps by Surabhi Agnihotri: https://appshunter.io/developer/6788820308 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-15.*