General Knowledge
115 original practice questions across 23 topics. Every answer comes with a written explanation and a citation to the actual federal regulation, not just an answer key.
Study by topic
Frequently asked questions
What does the General Knowledge CDL test cover?
The General Knowledge knowledge test covers 23 required topics, including Vehicle Inspection, Basic Control of Your Vehicle, and Shifting Gears. These are the required knowledge areas under 49 CFR 383.111(a). Practicing by topic here lets you see exactly which areas you're weak on before test day.
How many practice questions does the General Knowledge section have?
This section has 115 original practice questions across 23 topics, each with its own written explanation and a citation to the actual regulation behind it. Your state's real test uses its own question count; Washington, for example, uses 50 questions for its General Knowledge test.
Are these the real General Knowledge CDL test questions?
No. These are original practice questions, not the actual General Knowledge exam questions used by any state. They're derived from the federal knowledge requirements in 49 CFR 383.111(a), never copied from a real test or a competitor's practice test, and each comes with its own written explanation.
Is the General Knowledge test required for every CDL applicant?
Yes. Every CDL applicant must pass the General Knowledge test, regardless of vehicle class or endorsement, under 49 CFR 383.111(a). Every other knowledge test is required only if it applies to your specific vehicle class or endorsement, but this one applies to everyone.