Free Colorado CDL Permit Practice Test: General Knowledge 2025

Welcome! You’re probably here because you want to pass the official General Knowledge test on commercial driving theory, which you must do to obtain a Commercial Learner’s Permit (CLP). We hope you’ve been reading the official Colorado Commercial Driver License Manual (Colorado CDL Handbook 2025) because the official knowledge test questions are based on it. But are you also looking for some additional help to further improve your chances of passing the test?

Well, that’s what we’re here for! We’ve helped thousands of aspiring car drivers and commercial drivers pass their respective knowledge exams, and we’re going to help you too.

This free Colorado CDL permit practice test, one of several we offer, is based on the official manual, just like the official General Knowledge test. The practice test is up to date as of December, 2025. As you practice answering questions about the stuff you’ve been reading in the manual, that material will get easier to remember, increasing your chances of passing the official exam. To make your studying easier, each of the 50 practice questions comes with a helpful hint and an explanation of the correct answer. The practice questions on this test will assess your knowledge of such topics as basic vehicle maneuvers, cargo management, emergency preparedness, and pre-trip inspections. If you need help to answer a question, our automated assistant can give you a hint. If you still miss the question, the assistant can provide you with an explanation of the correct answer.

Once you obtain a Commercial Learner’s Permit (CLP), you can start practicing for the official skills test. Passing the skills test is a necessary step toward obtaining a Commercial Driver’s License (CDL).

Once you hold a CDL, you can start earning real money as a licensed commercial driver. Economic sectors in Colorado’s diversified economy include agriculture (hay, corn, wheat, and beef), high-tech industries such as aerospace, manufacturing, and gold mining and production. All these sectors need truck drivers to transport their products. High-tech industries also need truck drivers to deliver equipment and supplies to them. Bus drivers are employed by public transportation services, both intra-city and inter-city. The state’s tourism industry also employs bus drivers to transport visitors to ski resorts and on tours through mountain towns.

You’ll soon become familiar with Colorado’s major commercial routes. Interstate 25, heavily used by truckers, runs from Wyoming through Denver and then to New Mexico. Interstate 70 runs from Utah to Maryland. Interstate 76 and U.S. Route 285 are used by truckers to transport agricultural products.