Alberta Air Brake (Q) Knowledge Test study plan
Alberta Air Brake (Q) Knowledge Test · Give each week a clear focus.
8 weeks · About 6 hours per week
Air brake system fundamentals and component identification & Compressed air supply, compressor and governor operation
Label every major component of a tractor-trailer air brake system from memory (compressor, governor, reservoirs, foot valve, relay valve, chambers, slack adjusters)
Explain in your own words how air moves from compressor to brake chamber during a brake application and release
Describe the governor's cut-in and cut-out function and state typical pressure settings
Distinguish between service, parking and emergency circuits using your own diagram
Your checkpoint
A hand-drawn, fully labelled system diagram with a one-paragraph written explanation of the apply/release air path, scored against the domain 1 and 2 checklists
Air brake system fundamentals and component identification & Compressed air supply, compressor and governor operation & Brake chambers, slack adjusters and foundation brakes
Trace the function of each valve and reservoir in the system and predict the symptom if any one fails
Identify the parts of a brake chamber and explain the stroke that occurs during application
Define pushrod travel and state why excessive stroke reduces braking force
Explain how a slack adjuster converts chamber stroke into brake shoe movement
Your checkpoint
A 20-item self-quiz on components and air supply written and answered closed-book, with any missed items logged on a weak-spot list
Brake chambers, slack adjusters and foundation brakes
Identify automatic and manual slack adjusters and describe the adjustment procedure for each
Explain the correct pushrod angle and the effect of an incorrect angle on braking
Describe how foundation brake components (shoes, drums, cam, rollers) wear and what inspection reveals
Compare the consequences of an over-stroked chamber versus a dragging brake
Your checkpoint
A written slack adjuster adjustment procedure in numbered steps, plus a table of five foundation brake faults with the symptom each produces
Air pressure buildup, leakage and low-pressure warning tests
State the required pressure buildup time from a fully depleted system and explain why it matters
List the standard leakage test pressures and the maximum allowable pressure loss for each test
Describe when and how the low-pressure warning device must activate
Sequence the static leakage test steps for a tractor-trailer in correct order
Your checkpoint
A one-page leakage and low-pressure warning test procedure card with all pressure values and limits written from memory
Parking brakes and emergency/spring brake systems & Air pressure buildup, leakage and low-pressure warning tests
Explain how a spring brake chamber works and why it applies when air pressure is lost
Describe the correct procedure to release and re-apply spring brakes for a vehicle move
Identify the conditions that cause a spring brake to fail to release
Re-run the pressure loss and warning tests and interpret the results against the limits
Your checkpoint
A written emergency-stop scenario walkthrough describing exactly what happens to the spring brakes at each pressure drop, checked against the limit values from week 4
Pre-trip inspection and daily air brake checks
Build a complete pre-trip air brake inspection sequence from walk-around to in-cab checks
Perform and record the applied and released leakage tests, low-pressure warning test and pressure buildup test in order
List the defects that must place a vehicle out of service
Describe how to check slack adjuster and pushrod travel during a walk-around
Your checkpoint
A completed mock inspection checklist with recorded readings for every air brake test, plus a pass or fail verdict with reasoning
Driving with air brakes: stopping, brake fade and downhill control & Compressed air supply, compressor and governor operation
Explain brake fade and the difference between mechanical and air-related fade causes
Describe the correct gear and braking technique for a long descent
Explain how compressor duty cycle and governor cut-in affect repeated brake applications on a grade
Apply the threshold braking and stopping-distance concepts to three worked scenarios
Your checkpoint
Three written downhill driving scenarios with your chosen gear, braking plan and justification for each
Air brake system fundamentals and component identification & Brake chambers, slack adjusters and foundation brakes & Air pressure buildup, leakage and low-pressure warning tests & Parking brakes and emergency/spring brake systems & Pre-trip inspection and daily air brake checks & Driving with air brakes: stopping, brake fade and downhill control
Re-test every weak-spot item logged during weeks 1 to 7
Complete at least two full-length timed practice tests under exam conditions
Re-derive all pressure limits, buildup times and leakage values from memory
Review any domain scoring below 85 percent and rewrite the missed concepts in your own words
Your checkpoint
A final scorecard showing per-domain practice test accuracy with all domains at or above 85 percent
Milestones
Week 2: Draw and label the complete air brake system from memory with no reference material, and pass a 20-question closed-book component quiz at 85 percent or better
Week 4: Recite all pressure buildup, leakage and low-pressure warning values from memory and complete the written test procedure card without notes
Week 6: Complete a full mock pre-trip inspection with every air brake test recorded and correctly judged pass or fail
Week 8: Score 85 percent or higher in every domain on two timed full-length practice tests