Colorado CDL Class B Practice Exam 2026

Planning to drive straight trucks, buses, or large delivery vehicles? This Colorado Class B CDL practice test targets the single-vehicle end of the commercial world and prepares you for the written exam behind that license. Doubling as a class B license test and a class B license exam rehearsal, it covers the General Knowledge material every Class B applicant must know.

So what is a Class B, and how does it fit the classes of CDL drivers license? A Class B covers a single vehicle rated over 26,001 pounds, or one towing a trailer under 10,000 pounds, which puts dump trucks, box trucks, and many buses in this category. A Class C commercial driver's license, by contrast, is for smaller vehicles hauling placarded hazmat or carrying 16 or more passengers. Whichever you pursue, the written portion is identical: the full Colorado CDL general knowledge test is 50 questions with an 80 percent passing score. Class B trucks handle much of the local freight and municipal work around Denver and the Front Range.

Repeat this cdl class b test until the classifications and safety fundamentals are solid, and lean on the Colorado CDL Manual throughout your 2026 preparation.

Keep going:

• Colorado Class A CDL Practice Test
• Colorado CDL Practice Test
• Colorado Air Brakes Practice Test
• Colorado CDL Combination Practice Test
• Colorado CDL Pre-Trip Inspection Practice Test
• Colorado Hazmat Practice Test
• Colorado CDL Practice Test

Every question traces back to the Colorado CDL Manual - skim the right-of-way and signs chapters before your retake.