KY CDL Air Brakes case studies
KY CDL Air Brakes · Put your knowledge to work in context.
The Kentucky CDL Air Brakes knowledge test is the written endorsement exam a commercial driver must pass before operating a vehicle equipped with air brakes. It applies to drivers seeking or upgrading a Class A or Class B CDL, and to Class C drivers who will operate air-brake-equipped vehicles such as certain buses. In Kentucky, the test is administered through the state driver licensing system as part of the CDL knowledge testing process, and the air brakes endorsement appears on your license only after you pass it and complete the required skills testing in a vehicle with air brakes. The exam is multiple choice and tests understanding rather than memorization of part numbers. The KY CDL Air Brakes case studies are 5 cases and about 2,651 words.
1One Gauge Falling on I-65
You are driving a 2018 Freightliner Cascadia with a 53-foot dry van, grossing 68,000 lb, southbound on I-65 near Elizabethtown at 65 mph. The day is dry and traffic is moderate.
589 words, about 3 min2Pre-Trip Measurements at the Yard
You are doing a pre-trip inspection on a 2015 Kenworth T680 tractor with a 53-foot trailer. The combination has three axles: steer, drive, and trailer.
525 words, about 3 min3Static Test Results on a Tanker Combination
You are running the air brake tests on a 2020 Volvo VNL tractor with a loaded tanker trailer, a combination vehicle. The engine is off and the system is at 120 psi.
497 words, about 2 min4Light Steady Braking on a Wet Downgrade
You are driving a 2019 Peterbilt 579 with a 48-foot flatbed loaded with steel, gross weight 79,000 lb, eastbound on I-64 near Morehead at 60 mph. Light rain is falling.
534 words, about 3 min5Brake Failure with an Escape Ramp Ahead
You are descending a 6% mountain grade in eastern Kentucky with a 2015 International LT and a loaded dump trailer, 78,000 lb GCW. The grade is 4 miles long.
506 words, about 3 min