CDL Practice Written Test

Written-test practice for commercial drivers

CDL Practice Written Test is an Android study app for people preparing for a commercial driver’s license knowledge exam. It suits first-time applicants as well as drivers working toward a different CDL class or an additional endorsement. Practice is organized around the written-test subjects candidates are likely to encounter, giving you a way to review questions before sitting for the DMV exam.

Class, brake, combination, and endorsement topics

The app includes practice material for Class A and Class B general knowledge tests, along with air brakes and combination vehicles. It also covers several endorsement areas, including passenger, bus, hazardous materials, and double or triple trailers. State-specific practice tests are available for CDL preparation across the United States, so the app can be used alongside the requirements for your state.

• Class A and Class B general knowledge practice
• Air brakes and combination vehicle questions
• Passenger and bus endorsement preparation
• Hazmat and double/triple endorsement topics
• State-focused CDL practice tests

A focused way to review

This is a question-led study tool rather than a full driver-training course. Use it to check what you know, identify subjects that need more attention, and repeat practice before the written test. Its scope makes it more useful for targeted exam preparation than for learning commercial driving skills behind the wheel.

App details

Developed by DMV Written Test, the app is listed in Education and has recorded more than 100,000 installs. Its rating is approximately 4.6 out of 5 from 3,774 reviews, providing a useful indication of how existing users have received it.