Keentune is a private study app, not affiliated with, endorsed by, or acting for the FMCSA, any state DMV, or any government agency. It cannot issue a permit or license, schedule a test, or process an application; for those, use your state’s official DMV website.
Inspection, space, speed, and safe truck operation
The general-knowledge foundation of the commercial driver’s license exam, written from the federal CDL regulations (49 CFR) every state test sits on. Vehicle inspection, basic control and shifting, communicating and managing space, speed and stopping distance, night and winter driving, mountain grades and escape ramps, railroad crossings, cargo basics and weight distribution, and the rules that end careers — hours-of-service limits and disqualifying offenses. Every explanation states the rule, names the classic trap, and gives a memory hook for test day. Original questions in Keentune’s own words — never copied from the AAMVA model manual or a state manual, and never real exam items. Keentune is a private study app, not the DMV, not affiliated with FMCSA, AAMVA, or any state DMV, and never guarantees a pass.
• Meets you at your level — never too easy, never too hard.
• Adapts every question to how you’re doing.
• Tracks your level over time. Skill practice, not a test.
All exam, test, and product names and trademarks are the property of their respective owners and are used here for identification and reference only. Keentune is independent study practice — not affiliated with, authorized, or endorsed by any of these organizations.