Free 3-question preview
Free CDL General Knowledge Practice Test
Take a free CDL general knowledge practice test with instant explanations, then unlock the full MyCDLClass course in English.
Prepare for General Knowledge
The CDL general knowledge test checks the safety information every commercial driver needs before operating a commercial motor vehicle. It commonly covers vehicle inspection, basic control, shifting, speed and space management, cargo safety, emergencies, and hazardous driving conditions.
Use this short exam-style preview to find a weak area quickly. Each answer includes a plain-language explanation. When you are ready for more practice, continue with the complete MyCDLClass General Knowledge course.
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Frequently asked questions
What is covered on the CDL general knowledge test?
The test generally covers safe operation, inspections, vehicle control, shifting, communication, speed and space management, cargo, emergencies, and hazardous conditions. Your state manual is the final authority.
What score is normally required to pass?
Most state CDL knowledge tests require at least 80 percent, but candidates should confirm the current requirement with their state licensing agency.
Is this an official DMV or DDS test?
No. MyCDLClass provides independent exam-style study questions based on common CDL manual topics and is not a government agency.
More CDL practice
MyCDLClass is an independent CDL study resource and is not affiliated with or endorsed by any state licensing agency or the FMCSA. Always check your current state CDL manual.