Division 2.3 gases are:
Alberta Class 1–4 Mock Exam 3
Same format as the real test. Answers stay hidden until you submit. The official time limit is not published; the timer is a practice setting.
- No sign-up
- Every answer explained
- Independent · not a government site
- 30 questions
- untimed
- Pass mark 25/30
All 30 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Division 2.3 gases are:
- Flammable
- Toxic
- Non-flammable and non-toxic
- Corrosive
When should a bus driver shift gears during a turn?
- Whenever the engine labours
- At the start of the turn
- Halfway through the turn
- Never during the turn
By what pressure should the low air warning come on as pressure drops?
- 20 psi
- 40 psi
- 60 psi
- 90 psi
During a trip you find a defect that would endanger others. What does the maintenance rule require?
- Report it at the next annual inspection
- Tell the carrier and do not drive the vehicle
- Fix it yourself and report nothing
- Finish the trip, then report it
What must you check before raising the box near a site?
- Overhead wires
- The radio frequency
- Only the tire pressures
- The fuel gauge
Which steering method does the guide recommend for turning a large vehicle?
- Palming the wheel with one hand
- Using the spinner knob
- Hand-over-hand, using both hands
- Shuffle steering with one hand
How should you hold a parked tractor-trailer?
- Trailer hand valve and low gear
- Tractor parking brake and wheel chocks
- Transmission in gear only
- Trailer hand valve and chocks
You park a single-unit dump truck uphill on the right side of a road with no curb. Which way do the front wheels go?
- Straight ahead
- Toward the centre line
- To the right
- To the left
Why may a Class 1 applicant get knowledge test questions from any chapter of the guide?
- Air brake questions are added at random
- Other classes skip chapter 4
- A Class 1 holder may drive other vehicle types too
- Class 1 knowledge tests always have 50 or more questions
What is the longest semi-trailer box allowed?
- 16.2 m (53 ft)
- 17.4 m (57 ft)
- 14.6 m (48 ft)
- 18.3 m (60 ft)
The bus has an automatic transmission. Before opening the door to unload, what should you do?
- Shift to neutral and release the brakes
- Leave it in drive and hold the brake pedal
- Park, park brake, foot on the brake
- Turn off the engine and red lights
In an urban area, which reversing move is illegal?
- Backing slowly on a quiet street
- Backing into an intersection
- Backing into a marked parking stall
- Backing with a guide standing behind
What causes high-speed off-tracking?
- A heavy load at the front
- Centrifugal force pushing the rear outward
- Low tire pressure on the steering axle tires
- Turning the wheel too slowly
While filling propane, how do you know the tank has reached its maximum?
- The engine warning light turns on
- The hose becomes warm
- The pump shuts itself off automatically
- Liquid mist leaves the bleeder valve
A yard worker inspected your truck and signed the report. Who is legally responsible for that report?
- The person who signed it
- The carrier's safety manager
- The driver who takes the truck
- Nobody until it is filed
Since September 1, 2022, when may a driver operate a school bus without an S endorsement?
- With two passengers at most, none of them students or minors
- Whenever the whole trip is shorter than 50 kilometres
- When a teacher rides on the bus
- On weekends, holidays and other days without classes
How should you control speed on a long, steep downgrade?
- Use the trailer hand valve only, to spare the tractor
- Ride the brakes lightly all the way down the hill
- Downshift before the crest and use the engine
- Shift to neutral and brake firmly
Your governor cuts out at 125 psi. Where should it cut in?
- About 100 to 105 psi
- About 85 to 90 psi
- About 115 to 120 psi
- About 60 psi
A bus breaks down on a rural highway in daylight. Where do the warning devices go?
- 75 m ahead of and behind the bus
- 30 m ahead of and behind the bus
- 150 m ahead only
- 10 m behind the bus only
Under the regulation, when is a vehicle being used "for hire"?
- Whenever passengers share gas costs
- When someone is paid for the service the vehicle provides
- Whenever the vehicle is commercially registered
- Only when a taxi meter is used
If a school bus has a strobe lamp, when must it be on?
- Only while students cross
- Only on gravel or snowy roads
- Only at night on rural roads
- In fog, blizzards or smoke
You hold a Class 5 GDL (probationary) licence. Can you apply for a Class 3 licence now?
- No, not while you are a probationary GDL driver
- Yes, once you have passed the knowledge test
- Only for farm-registered trucks
- Yes, as long as you are at least 18 years old
Which class covers corrosives that eat into metal and skin?
- Class 9
- Class 4
- Class 6
- Class 8
A backing alarm is required around workers on foot. What must be true of it?
- It can be switched off on quiet sites
- It must be louder than the horn
- It only sounds in low light
- It is automatic and has no shut-off switch
A driver passes your stopped school bus while its red lights flash. What can you do?
- Follow the vehicle to get its details
- Sound the horn and chase it
- Note the licence plate and report it to police
- Nothing; only police can see it
A dangerous goods inspector asks to see proof of training. What must the driver show?
- The bill of lading only
- The driver's medical report
- The training certificate
- The vehicle registration
A stop sign just past the tracks would leave your trailer over the rails. How long may you block the crossing?
- As long as the light at the stop sign is red
- Not at all, under any condition
- Up to two minutes if traffic is heavy
- 20 seconds at most, once clear of trains
A carrier operates only in Alberta. Which trucks need trip inspection reports?
- Every truck, whatever its weight
- Trucks registered at 11,794 kg or more
- Only trucks with air brakes
- Trucks registered at 4,500 kg or more
How often must trucks and trailers registered at 11,794 kg or more be inspected under the Vehicle Inspection Program?
- Every 12 months
- Every two years
- Every 24 hours
- Every six months
What is the minimum tread depth for a tire on the steering axle?
- 3.2 mm
- 4.8 mm
- 1.6 mm
- 2.4 mm
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