Oregon CDL Practice Test: Class A - Test 7 2023
Based on 2023 OR CDL Handbook
Instruction: When applying for this license, applicants must pass a 50-question test. And applicants must score 80% to pass the test. The following questions are based on the details provided in the OR CDL Handbook. Endorsements that may be used with a Class A CDL include Hazardous Materials, Passenger, Double and Triples, HazMat and Tanker, Air Brakes and School bus. If you need additional information, please contact your local DMV office. You can find your nearest DMV office at Oregon DMV locations.
2. The emergency brakes will come on __________.
Whenever air pressure in the emergency line is lost.
Only during the winter.
When water and oil are expelled for the air tank.
If the driver honks the horn.