General Knowledge CDL Practice Test

General Knowledge is not an actual CDL test. General Knowledge is incorporated into the tests for CDL A, CDL B, and CDL C. Our CDL practice test covers the general knowledge subjects. The general knowledge section of the CDL license test covers:


Vehicle Inspection

Basic Control of Your Vehicle

Shifting Gears



Controlling Your Speed

Managing Space

Seeing Hazards

Distracted Driving

Aggressive Drivers and Road Rage

Driving at Night

Driving in Fog

Driving in Winter

Driving in Very Hot Weather

Railroad and Highway Crossings

Mountain Driving

Driving Emergencies

Antilock Braking Systems

Skid Control and Recovery

Accident Procedures


Alcohol, Other Drugs, and Driving

Hazardous Materials Rules

The general knowledge CDL exam contains knowledge and safe driving questions that all commercial drivers should know. You must pass a test on general knowledge to receive a CDL. The exam does not have specific questions on air brakes, combination vehicles, doubles, or passenger vehicles. Those subjects are covered in separate tests. Pre-trip inspection is also covered in a separate test. The general knowledge test does include basic information on hazardous materials that all drivers should know. Our CDL practice test covers the subjects listed above and much more.

Free CDL Practice Tests – More Free CDL Practice Tests – Class A, Class B, or Class C CDL