AB Air Brake Test 9
- Perfect for first-time and renewal commercial applicants, and those adding endorsements
- Based on 2024 AB commercial driver's licence manual
- Triple-checked for accuracy
- Updated for December 2024
questions
correct answers to pass
passing score
- To what are Hydraulic Driveline Retarders comparable?
- Antilock Brake Systems (ABS) are managed by sensors, modulators and a computer. An ABS modulator is NOT positioned
- What would a heavy weight at the trailer's front cause the drive axles to possess?
- In the use of runaway lanes, which of these is false?
- Brake management systems are efficient, when should drivers trust them?
- From which year have ABS brakes been compulsory on all air-brake trucks, buses, and trailers?
- To safely descend in rural areas, which statement is incorrect?
- What extra steps does a driver need to take with a vehicle equipped with a Stability Control System?
- During the pre-hill inspection, which essential brake inspection must be performed at the very least?
- Ideally, when should en-route inspections be performed?
- Which system is replaced by the Stability Control System?
- If wheel spin is detected by the ATC system, what is the response?
- What is not part of an in-service brake check?
- When should your brakes be inspected when going down a steep hill?
- During a vehicle inspection, can a vehicle be operated even if it has a minor defect?
- During an on-route air brake inspection during the shift, which statement is incorrect?
- What is tested when the engine is running?
- The ATC dashboard light illuminates under certain circumstances. What does a flashing light imply?
- During the Tractor Protection System test, the trailer air supply valve should pop out at what pressure?
- During the air brake inspection in the daily inspection, when should the trailer be inspected?
- Regulations govern the legal requirements for vehicle inspections. How often do industry best practices require vehicles to be inspected?
- What unusual vehicle behaviour does the Stability Control System correct?
- When are carriers required to receive the commercial vehicle inspection report?
- Which systems has technological advancement significantly improved?
- The Air Brake Practical Test form's procedure primarily serves as what?
- At what point during the pre-trip inspection is the air system examined for leaks?
- Which statement about testing the automatic feature of the park control valve is incorrect?
- Which statement is incorrect regarding the pre-hill brake inspection?
- What is considered a minor flaw in the air brake system?
- At how many psi should the low air pressure warning turn on during the Tractor Protection System test?
- What needs to be done if new components have been added to the vehicle after the daily inspection?
- Which statement is false regarding the purpose of the Commercial Vehicle Safety Regulation of the Traffic Safety Act?
- The trailer air supply valve can be automatically tripped by the park control valve. How can you do this?
- Which is not considered a major defect in the air brake system?
- Which statement is false about conducting a post-trip air brake inspection?
- When should the inspection report be available for peace officers?
- When are drivers required to incorporate the air brake pre-trip inspections?
- What is a consequence of brake lining failure?
- How many psi should the governor cut out at during a check?
- When checking the air compressor, at what psi should you stop timing when the engine is running at 1200 rpm?
- Within the commercial vehicle industry, what does "CVSA" stand for?
- What is the objective of the system leaks procedure?
- Which air line is not filled during the air systems leaks procedure?
- What leads to chafed air lines?
- What occurs once a plastic air line becomes kinked?
- How would you confirm that the brake chamber has been securely mounted?
- Is blocking off the air lines that supply the failed component an acceptable way to deal with air system failures?
- What leads to the widening of cracks in the brake drums, eventually causing the drum to come apart?
- What could cause the clevis pins to slowly dislodge?
- In the case of any visible damage or corrosion in brake chambers or clamp rings, who is competent enough to carry out the repair work?