California cdl Class B Knowledge Test - 1
Number of questions: 50
Passing score: 80%
Acceptable number of errors: 10
This license is required for driving a single vehicle with a GVWR of more than 26,000 pounds, a 3-axle vehicle weighing over 6,000 pounds, a bus (except a trailer bus), with endorsement or any farm labor vehicle, with endorsement. To receive this license, applicants must pass a 50-question test. Each question has three answer choices. To pass, applicants must answer 40 questions correctly. Test questions come from the California Commercial Driver Handbook. Questions come from chapters covering: Introduction, Driving Safely, Transporting Cargo Safely, Air Brakes (if applicable), Combination Vehicles, Pre-Trip Vehicle Inspection Test, Basic Vehicle Control Skills Test and On-Road Driving. Endorsements that may be used with a Class B CDL are: Hazardous materials, Tank, Passenger, HazMat and Tank, Air Brakes and School bus.
To DMV Handbooks21. If asked by a law enforcement officer to take a test to determine your blood alcohol concentration (BAC):
You can refuse to take the test without a penalty.
You can refuse taking the test but will be required to pay a $50 fine.
You will lose your CDL if you refuse to take the test.