NE CDL Air Brakes study guide
NE CDL Air Brakes · Work through your exam, one topic at a time.
The Nebraska CDL Air Brakes knowledge test is the written knowledge exam a commercial driver must pass to have the air brake restriction removed from a Nebraska commercial driver's license. It matters to anyone who will operate a vehicle equipped with air brakes - tractor-trailers, straight trucks, buses, and other heavy commercial vehicles - because a CDL issued without passing this test carries an air brake restriction and does not authorize driving air-braked equipment. The NE CDL Air Brakes study guide has 4 sections and about 1,585 words.
01Air Brake System Components and Operation
The Air Brake System Components and Operation domain tests whether you can name the parts that make air brakes work and explain what each one does under normal conditions. Expect questions on the compressor and governor, the reservoirs, valves, foundation brakes, and the two pressure gauges.
371 words, about 2 min02Air Brake System Inspection and Maintenance Checks
The Inspection and Maintenance Checks domain tests the in-cab air brake test and the visual checks a driver must make before a trip. Exam questions often turn on the order of the test and the exact pressure limits.
406 words, about 2 min03Air Brake System Malfunctions and Warning Signals
The Malfunctions and Warning Signals domain tests whether you can read the gauges and warning devices and decide what a failure means. The exam favors questions about what happens at specific pressures and which device signals which problem.
400 words, about 2 min04Air Brake System Emergency Features and Safe Braking Practices
The Emergency Features and Safe Braking Practices domain tests the equipment that stops you when air pressure is lost and the driving techniques that prevent brake fade and runaway. Exam questions often present a downgrade or a brake-failure scenario and ask for the correct action.
408 words, about 2 min