iOS · Templebit
CDL Knowledge Assist — Your Commercial Licence Coach
1,200 practice questions for every CDL knowledge test, with written explanations for all of them.
The app covers the written CDL knowledge tests. It does not cover the skills test, the pre-trip inspection road exam, or the driving portion.
Download on the App StoreKnowledge tests covered
- General knowledge
- Air brakes
- Combination vehicles
- Hazardous materials
- Tanker, doubles/triples, and passenger endorsements
How you study
- Written explanations for every question, not just a right answer
- Timed practice runs that mirror knowledge-test conditions
- Flashcards for fast review of signs, limits, and procedures
- Spaced repetition that returns you to what you keep missing
- Per-topic progress so you know which knowledge test you're ready for
- Fully offline — works entirely on-device
CDL Knowledge Assist is an independent study aid. It is not affiliated with, endorsed by, or connected to FMCSA, AAMVA, or any state licensing agency.