Alberta Class 1 Knowledge Practice Test 2026: Practice test 3

Practice test 3 of 5 for the Alberta Class 1 Knowledge Practice Test: 20 more questions with answers and explanations.

Commercial vehicle
Alberta
130 questions
Checked October 10, 2026

Question 1 of 20
The lights at a highway scale or inspection station are flashing. Which vehicles must report?
- Only vehicles over 30,000 kg
- All vehicles, including cars
- Vehicles over 4,500 kg
- Only buses
Show answer
Answer: C. Vehicles over 4,500 kg
Vehicles over 4,500 kg must report to the scale when its lights are flashing.
Question 2 of 20
Which national standard sets the cargo securement rules for trucks over 4,500 kg?
- The Canada Labour Code
- National Safety Code Standard 10
- The Fire Code
- National Safety Code Standard 13
Show answer
Answer: B. National Safety Code Standard 10
Cargo securement for trucks registered over 4,500 kg follows NSC Standard 10.
Question 3 of 20
What must cargo securement prevent?
- The receiver opening the trailer doors at delivery
- Cargo leaking, spilling, blowing off, falling or shifting
- The cargo being seen or counted by other drivers
- Cargo getting wet or dirty in rain or snow
Show answer
Answer: B. Cargo leaking, spilling, blowing off, falling or shifting
Cargo must not leak, spill, blow off, fall or shift enough to affect the vehicle's stability.
Question 4 of 20
What should you check before backing a tractor under a trailer?
- That the landing gear is fully raised off the ground
- That the trailer is chocked and the fifth wheel jaws are open
- That the air lines are already connected to the trailer
- That the trailer brakes are released so it can roll
Show answer
Answer: B. That the trailer is chocked and the fifth wheel jaws are open
Chock the trailer, make sure the jaws are open, and inspect the apron, kingpin and collar.
Question 5 of 20
While backing under the trailer, why do you stop just before contact?
- To lower the landing gear to the ground
- To check that the trailer is at the right height
- To rest and update your logbook
- To drain the air tanks before coupling
Show answer
Answer: B. To check that the trailer is at the right height
Stop before contact and check that the heights match before coupling.
Question 6 of 20
How do you confirm the fifth wheel is locked after coupling?
- Drive away fast and brake hard once
- Listen for the click, then drive away
- Ask someone to push the trailer from behind
- Do a firm tug test, then look to see the jaws are locked
Show answer
Answer: D. Do a firm tug test, then look to see the jaws are locked
Do a firm tug test, then visually confirm the jaws are locked.
Question 7 of 20
When uncoupling a trailer, what do you do before unlocking the fifth wheel?
- Release the tractor and trailer parking brakes
- Lower the landing gear and disconnect the lines
- Drive forward quickly to free the kingpin
- Raise the landing gear fully off the ground
Show answer
Answer: B. Lower the landing gear and disconnect the lines
Park straight, set the brakes, chock, lower the landing gear and disconnect the lines before unlocking the fifth wheel.
Question 8 of 20
When making up a combination with two trailers of different weights, where should the heaviest trailer go?
- In the middle of three trailers
- It does not matter
- Directly behind the tractor
- At the very back
Show answer
Answer: C. Directly behind the tractor
Always hook the heaviest trailer directly to the tractor, with the lightest one furthest back.
Question 9 of 20
What following distance does the Commercial Driver's Guide recommend for large vehicles in good conditions?
- At least four seconds
- At least one second
- At least two seconds
- At least ten seconds
Show answer
Answer: A. At least four seconds
Use the four-second rule for large vehicles, and double it in poor conditions.
Question 10 of 20
About how long is the air brake lag time?
- There is no lag
- About 0.04 seconds
- About 0.4 seconds
- About 4 seconds
Show answer
Answer: C. About 0.4 seconds
Air brakes take about 0.4 seconds to apply after you press the pedal, on top of perception and reaction time.
Question 11 of 20
How should you apply air brakes in a normal stop?
- By pressing hard and releasing fully, again and again
- By pumping the pedal quickly to build pressure
- With the trailer hand valve only, to save the tractor brakes
- With even pressure, easing off as you slow, without pumping
Show answer
Answer: D. With even pressure, easing off as you slow, without pumping
Apply with even pressure, ease off as the vehicle slows, and do not pump air brakes, which wastes air.
Question 12 of 20
Before going down a long hill, what should you do?
- Turn off the engine brake to save the engine
- Downshift before the crest and test your brakes
- Shift to neutral at the top to save fuel
- Speed up so the descent takes less time
Show answer
Answer: B. Downshift before the crest and test your brakes
Downshift before the crest, use engine compression and test the brakes before descending.
Question 13 of 20
Why should you not rely on the trailer hand valve alone to slow down?
- It is illegal to touch it while moving
- It uses too much fuel
- It turns off the trailer lights
- It can cause brake imbalance and a jackknife
Show answer
Answer: D. It can cause brake imbalance and a jackknife
Using only the trailer brakes, especially on hills, can unbalance braking and lead to a jackknife.
Question 14 of 20
Above what weight must a trailer have brakes that the driver can control?
- 2,300 kg
- 500 kg
- 4,600 kg
- 910 kg
Show answer
Answer: A. 2,300 kg
Do not tow a trailer over 2,300 kg unless it has brakes the driver controls.
Question 15 of 20
How should you enter a curve in a heavy truck?
- In neutral, so the trailer can roll freely
- Faster than normal, to keep your momentum
- At the posted speed, braking hard in the middle
- Slowly enough that you do not need to brake in the curve
Show answer
Answer: D. Slowly enough that you do not need to brake in the curve
Enter curves at a speed that needs no braking. Too much speed can cause skids, rollovers or jackknifes.
Question 16 of 20
When parking on a hill with a curb, how close to the curb must your wheels be?
- No more than 1 m
- No more than 50 cm
- Touching the curb
- No more than 2 m
Show answer
Answer: B. No more than 50 cm
Park with your wheels no more than 50 cm from the curb.
Question 17 of 20
Before reversing a large vehicle, what should you do?
- Back up at normal speed to clear traffic fast
- Rely on other drivers to stop and wave you back
- Sound the horn and back slowly, checking your mirrors
- Turn off your mirror heaters and back up quickly
Show answer
Answer: C. Sound the horn and back slowly, checking your mirrors
Reverse slowly, check mirrors and sound the horn before reversing. Get out and look when you need to.
Question 18 of 20
This diagram shows a tractor-trailer's no-zones. Where can a car be completely hidden from the driver?
- Two lanes to the left, well ahead
- Far ahead of the truck in the same lane
- Beside the trailer on the right side
- Parked on a side street
Show answer
Answer: C. Beside the trailer on the right side
The right-side no-zone is the largest and can hide a car beside the trailer.
Question 19 of 20
Your truck breaks down outside an urban area in daylight. Where do you place warning devices?
- About 30 m in front of and behind the vehicle
- On the roof of the cab, where they can be seen
- Right beside the truck, on the traffic side only
- About 500 m behind the truck only
Show answer
Answer: A. About 30 m in front of and behind the vehicle
Turn on the hazard lights and place an approved warning device about 30 m in front and behind.
Question 20 of 20
What is the maximum speed for a long combination vehicle (LCV) in Alberta?
- 110 km/h on divided highways
- 90 km/h on all roads, whatever is posted
- The posted limit plus 10 km/h
- 100 km/h, or the posted limit if lower
Show answer
Answer: D. 100 km/h, or the posted limit if lower
LCVs may not go faster than 100 km/h or the posted limit, whichever is lower.

Related tests