CDL General Knowledge
Free practice for the CDL General Knowledge exam. Original questions in English, 中文 and Español, covering the official content areas — with a full timed mock exam.
The CDL General Knowledge exam is about 50 questions, 80% to pass. Practice by topic here, then take the full timed mock exam to gauge your readiness. Free, no signup.
▶ Practice questions
Learn by topic with instant explanations. Free, no signup.
🎯 Full timed mock exam
A 50-question, 60-minute simulation to test your readiness.
What the CDL General Knowledge exam covers
27%
Safe Driving
23%
Vehicle Inspection
18%
Control & Operation
17%
Emergencies & Hazards
15%
Regulations & Health