Outside a city, where should a bus stop to load or unload passengers if possible?
MPI Class 4 Knowledge Test Practice
Free practice questions on the Class 2 and Class 4 section of the MPI manual: bus and school bus classes, emergency vehicles, bus driving, passenger safety and bus inspections.
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In Manitoba a Class 4 licence covers ambulances and other emergency vehicles, buses seating 10 to 24 and school buses seating 10 to 36 while carrying passengers; Class 2 covers larger buses and school buses. You need at least a Class 5I or 5A licence, age 18 and an approved medical. MPI's Class 2 and Class 4 knowledge tests have a 30-minute limit, are offered in English and French, and are based on the Professional Driver's Manual.
This page draws on Section 4 of the manual, the extra information for Class 2 and Class 4 drivers, plus the bus items from the trip inspection section: which class each bus needs, school bus stops at railway crossings, the rules for emergency vehicles on a call, bus turns and leaving the curb, passenger safety, refusing passage, and checks on emergency exits, door interlocks and wheelchair lifts. Pair it with our general topics, because Section 2 applies to every class.
All 26 questions in this test
Every question and its answer choices. The correct answers and explanations appear when you take the test above.
Outside a city, where should a bus stop to load or unload passengers if possible?
- Right at a railway crossing
- On the opposite side of the road
- Clear of the travelled part of the highway
- In the centre of the driving lane, with flashers on
On a bus with loading lights and a stop arm, what fault must be reported?
- A stop arm painted red and white
- Lamps not alternating or arm not fully out
- The stop arm extending whenever the door is opened
- Lamps that are brighter than headlights
A defect develops mid-trip that makes it unsafe to continue. What should the bus driver do?
- Finish the route as planned and report it afterward
- Drive slower and keep the passengers aboard
- Stop, and not carry on with passengers until fixed
- Ask the passengers to vote on continuing
When may an emergency vehicle go through a red light on a call?
- Whenever its headlights are on
- Any time it is on duty in its own service area
- Only between midnight and 6 a.m.
- Only while using a siren and flashing red lights
A visually impaired passenger boards with a guide dog. What applies?
- Animals are never allowed on buses
- The dog must ride in the baggage compartment
- The dog may board only if muzzled
- The licensed animal may ride with them
During a bus inspection, what must be checked about the emergency exits?
- They are covered to keep out the cold
- Only the roof hatch needs to be checked
- They are locked so passengers cannot open them
- They work, with a buzzer, from inside and out
Passing a line of parked cars, which clue warns that one may pull out?
- A parking ticket on the window
- Exhaust coming from its tailpipe
- A clean windshield
- Its headlights being off
A school bus seats 40 occupants including the driver. What class is needed while carrying passengers?
- Class 5 with an S endorsement
- Class 4 or higher
- Class 2 or higher
- Class 3 or higher
What is required when refuelling a public passenger vehicle?
- Passengers seated with windows closed
- Engine running so passengers stay warm
- The nozzle held just above the opening
- Engine off, nozzle kept in contact and grounded
After stopping at the tracks, what must a school bus driver do before crossing?
- Open the service door, look and listen both ways
- Turn on the stop arm and alternating lights
- Ask a student to watch from the rear window
- Turn off the engine and wait one minute
For a sharp right turn with a bus, how far from the curb should you position on the approach?
- Right against the curb
- Three to four metres
- One to two metres
- In the middle of the left lane
An empty school bus approaches a railway crossing. Must it stop?
- Only on provincial highways
- No, only when carrying students
- Only if the crossing has no signals
- Yes, whether or not it carries passengers
What is the bus driver's first consideration?
- Collecting every fare
- Passenger entertainment
- Safe operation of the vehicle
- Keeping to the published schedule
A passenger van seats 15 occupants including the driver and carries paying passengers. What class is needed?
- Class 2 or higher
- Class 4 or higher
- Class 5
- Class 1 only
Why must you take care pulling away from the curb in a bus with rear overhang?
- The rear doors may open while turning
- The overhang drags on the road surface as you pull out
- The overhang can swing into poles or people
- The rear wheels may lift off the road
How far from the nearest track must a Manitoba school bus stop at a railway crossing?
- Between 5 m and 15 m
- Between 1 m and 3 m
- Between 15 m and 30 m
- Exactly 10 m
Where may passengers not sit while you drive?
- To the left of the driver
- Beside a window
- At the rear of the bus
- In the first row behind the driver
What should you check about a bus's service door control?
- That the door and any brake interlock work
- That it is disconnected in winter
- That it stays open while driving
- That it only opens from outside the bus
Before leaving the curb with a bus, what should you do besides checking the side mirror?
- Glance over your left shoulder
- Open the door to look back
- Sound the horn twice
- Flash your four-way lights
What must be checked on a bus wheelchair lift during inspection?
- Only that the lift is clean
- That it lifts more than 500 kg
- It completes its cycle and its safety devices work
- That it is folded, locked away and cannot be used
Turning left with a bus, when do you begin turning?
- As soon as the front wheels pass the stop line at the corner
- When the cross street's curb shows in the front left window
- When the rear wheels reach the crosswalk
- When oncoming traffic slows for you
What must an emergency vehicle driver still consider when responding to a call?
- Nothing, because all other drivers must yield to it
- Only the patient's condition
- Only the posted speed limit
- The road, the traffic and how the vehicle is used
How must baggage be carried on a public passenger vehicle?
- Only on the roof of the vehicle
- Beside the driver for supervision
- So it cannot block exits or fall on passengers
- Stacked in the aisle for quick access
A bus seats 30 occupants including the driver and is carrying passengers. What licence class is needed?
- Class 5 with a medical
- Class 2 or higher
- Class 3 or higher
- Class 4 or higher
Which practice causes preventable passenger injuries on buses?
- Turning slowly at intersections
- Sudden stops or starts with standees
- Stopping close to the curb at a loading zone
- Closing the doors before moving
A person at a scheduled stop offers the fare. When may you refuse to carry them?
- When they are carrying a large bag or a suitcase
- When all seats are full, or they are disorderly
- When they want to stand
- When the bus is running late
FAQ
MPI Class 4 knowledge test: common questions
Do ambulance drivers need a Class 4 licence in Manitoba?
Yes. Class 4 includes ambulances and other emergency vehicles, as well as buses seating 10 to 24 and school buses seating 10 to 36 while carrying passengers.
How many questions are on the MPI Class 4 test?
MPI does not publish the number of questions or a pass mark for Class 4. The test has a 30-minute limit and is offered in English and French.
What if I fail the MPI Class 4 knowledge test?
You may retake a Class 1, 2, 3, 4 or air brake knowledge test on the next working day, and only one knowledge test per class is allowed each day.
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Practice by topic
- Licence classes, testing and medical rulesWhat Class 1 to 4 licences allow in Manitoba, minimum age and Class 5 stage needed, Authorized Instruction and supervising drivers, MELT, knowledge and road test rules, medical and vision standards, US commercial driving and the air brake endorsement.
- Impairment, fatigue and safety equipmentImpaired driving sanctions, carbon monoxide, emotions, fatigue and sleep debt, hours of service, airbags and seatbelts, distractions, warning reflectors, fire fighting and extinguishers.
- Fuel-smart driving, night driving and vehicle controlsFuel efficiency habits, starting and warming up, night driving distances and dimming, hand position, clutch and double-clutching, engine rpm and gear changes, shifting before hills, curves and railway crossings, lane use.
- Speed, following distance and brakingSpeed, weight and stopping force, the danger zone, the four-second rule and length-based count, traffic tempo, tailgaters, the 90 m rule, slow-moving vehicles, snubbing and control speed, retarders, ABS and runaway lanes.
- Tires, wheels, passing and intersectionsTread depth limits, retreads, tire pressure and heat, wheel fasteners and failures, passing and being passed, lane changes, curves and intersection rules for large vehicles.
- Backing, parking and railway crossingsBacking rules and guides, leaving alleys and lanes, securing an unattended vehicle, and Manitoba railway crossing distances, prohibitions and when you may cross with lights flashing.
- Weather, winter roads, skids and jackknifingIce and snow, reduced visibility, black ice, Manitoba winter and ice roads, strong winds, hydroplaning, wet brakes, the causes of skids, skid recovery and jackknifing.
- Trip inspections and road test vehicle rulesWho must do a daily trip inspection, what the report contains, major and minor defects, the road test inspection and vehicle requirements, tread, mud flap and reflective tape rules, hydraulic brake checks, in-service, post-trip and pre-hill inspections.
- Turning, backing and coupling (Class 1 and 3)Off-tracking, right and left turns with button hook, extended approach and lane straddling, backing a tractor-trailer, the Class 1 straight line backing test, draw-bar rules, and Manitoba's coupling and uncoupling steps.
- Dimensions, weights and loads (Class 1 and 3)Height, width and length limits, permits, utility approvals, escort and pilot vehicles, weight rules and spring restrictions, weigh stations, load distribution, securement, projections, night oversize lights and farm equipment.
- Dangerous goods, special loads, highway trains and tow trucksDangerous goods duties, classes and placards, documents and spill reporting, livestock, hanging meat, bulk and tank loads, highway trains and rear amplification, and tow truck rules.
- Buses, school buses and emergency vehicles (Class 2 and 4)Which licence class each bus and school bus needs, school bus stops at railway crossings, emergency vehicle exemptions and duties, and the extra trip inspection items for buses.
- Driving a bus and passenger safety (Class 2 and 4)Bus right and left turns, leaving the curb, parked-vehicle clues, passenger safety, interior lights, defects and breakdowns, fuelling, baggage, loading passengers, the driver's vision, standing passengers and refusing passage.
- Air brake basics and the air supplyThe air brake endorsement and learner rules, how air brakes differ from hydraulic brakes, the compressor and governor, normal pressure range, supply and dual tanks, draining, air dryer, alcohol evaporator, gauges, safety valve and low-pressure warnings.
- Service brakes and spring brakesThe brake pedal and dual circuits, brake chambers, pushrod stroke and adjustment limits, who may adjust brakes, spring brake chambers, caging, the yellow parking control, automatic spring application and DD3 chambers.
- Trailer brake subsystemSupply and service lines, gladhands and colour codes, cross-connected lines, the trailer hand valve, the red trailer supply valve, the tractor protection valve and system, automatic trailer spring brakes and spring or service brake priority.
- Foundation brakes, brake demands and complianceS-cam, disc and wedge brakes, how speed and weight change stopping distance, brake heat and fade, why adjustment matters, ABS, and the law on operating vehicles with defects.
- Air brake inspections, tests and brake adjustmentInspecting linings, chambers, drums, lines, tanks and compressors, the low air warning, build-up, governor, leak, tractor protection and spring brake tests, tug tests, draining, measuring pushrod stroke, long-stroke chambers and the S endorsement.