Class 4 Mock Test
#1. What is the purpose of an antilock braking system (ABS)?
ABS does not have much effect on your everyday driving. It does not affect your braking capability or shorten your stopping distance. It just helps you keep control of your vehicle by activating when your wheels are about to lock
#2. A vehicle that is twice the weight of a car and is travelling at twice the speed of that car requires how much braking power to stop in the same distance?
The kinetic energy of a moving object is directly proportional to the object’s weight. A vehicle that is twice as heavy has twice the kinetic energy. The kinetic energy of a moving object increases as the square of the object’s speed. Doubling the speed quadruples the kinetic energy (i.e., multiplies it by four). Brakes use friction to convert the kinetic energy of a moving vehicle into heat. Thus, if you double a vehicle’s weight and double its speed, it will take 2 × 4 = 8 times as much braking power to stop the vehicle.
#3. To qualify for a commercial driver’s licence in British Columbia, you must meet which of the following requirements?
To qualify for a commercial driver’s licence in British Columbia, you must have a rather clean driving record: fewer than four offences that carry penalty points in the last two years; no motor-vehicle-related Criminal Code convictions in the past three years; and no outstanding fines or debts owed to the Court, the Government or ICBC. Also, you must already hold a full-privilege driver’s licence from British Columbia or another province. Either a Class 5 car licence or a Class 6 motorcycle licence (or the equivalent from another province) is acceptable.
#4. After working 120 hours in a 14-day cycle, drivers must take ____ consecutive hours of off-duty time before taking 70 hours of on-duty time.
Drivers working on Cycle 2 must not drive after completing 120 hours in 14 days, and they must take at least 24 consecutive hours off duty before accumulating the next 70 hours of on-duty time.
#5. Under ideal driving conditions in City, passenger cars and light trucks should maintain a following distance of at least ________ behind the vehicle ahead.
Drivers of passenger cars and light trucks should maintain a following distance of at least two seconds behind the vehicle ahead. Drivers of buses, trucks, or other heavy vehicles should maintain a following distance of at least five seconds. If driving conditions are less than ideal, they should increase their following distance still further.
#6. Why should you adjust your head restraint so its top is at least level with the top of your head?
Head restraints (also called headrests) can help prevent soft-tissue injuries, such as whiplash. Whiplash is an injury of the neck, head or shoulders after being subjected to a snapping motion. If your head restraint is adjustable (not part of the seatback), adjust it so the top is at least level with the top of your head. Also position your head restraint as close to the back of your head as possible. It may be necessary to adjust your seatback position to do this.
#7. What should you do to prevent a vehicle fire?
There are many steps you should take to help prevent vehicle fires. Make sure your tires are properly inflated. Underinflated tires can overheat from increased flexing of the tires – and overheated tires can catch fire. Never start a vehicle with a fuel leak. Repair the leak and soak up the spilled fuel before starting the engine. Make sure your vehicle’s brakes are fully released while your vehicle is moving. Dragging brakes can generate heat, which can ignite the grease or oil in the wheel hubs. Shut off the engine before you start to refuel your vehicle, and don’t smoke while you’re refuelling it.
#8. When driving in the United States, you may drive no more than ____ hours during your on-duty time.
In the United States, you must follow all US regulations, including those on hours of service. In the United States, you may not drive more than 11 hours after 10 hours of off-duty time.
#9. Which vehicles are required to stop at uncontrolled main railway crossings?
The following vehicles are required to stop at all uncontrolled main railway crossings: (a) buses carrying passengers, including school buses carrying children; (b) vehicles transporting explosive, poisonous or flammable substances as cargo or as part of their cargo; and (c) vehicles used to transport combustibles, corrosive liquids, or liquefied petroleum gas, whether empty or loaded.
#10. You’re driving a taxi, ambulance, or ride-hailing vehicle. What should you do if it starts to skid?
If you start to skid, don’t brake. Instead, ease off the accelerator and turn the steering wheel in the direction that you want the vehicle to go. If your rear wheels are sliding left, steer left. If they are sliding right, steer right. The rear wheels may overshoot and start to skid in the opposite direction. To prevent this, turn the steering wheel the other way as soon as your vehicle starts to straighten out. This procedure, called “steering into the skid,” will get the rear of your vehicle back in line with the front. Once the vehicle is back under your control, straighten the front wheels. Note: ABS can prevent a braking skid caused by braking too hard, but it can’t prevent other types of skids such as those caused by too-sharp turns or curves on slippery roads.
#11. If you are required to keep a logbook, what must you have in your possession?
You must keep in your possession: (a) a daily log that’s updated to your last change in duty status; (b) copies of your daily log for the work cycle you’re using; (c) any supporting documents that you’ve been issued during your trip. You must submit your logbook and all supporting documents to your employer within 20 days.
#12. Why should you never run your vehicle’s engine in a closed garage?
Carbon monoxide (CO) forms from the incomplete burning of fuel, which can occur in a closed space (such as a garage) in which the supply of oxygen is limited. CO is highly poisonous. Running your vehicle’s engine in a closed garage for just a few minutes can produce lethal concentrations of CO.
#13. When you conduct a pre-trip inspection of your vehicle, all of the following should be considered major defects EXCEPT
National Safety Code (NSC) Standard 13 prescribes daily trip inspection requirements. According to Standard 13, a vehicle with a major defect may not be driven until the defect is repaired. Examples of major defects are a broken seatbelt, an inoperative parking or emergency brake, and an inoperative rearmost turn signal lamp. A missing fuel tank cap is considered a minor defect unless fuel is leaking from the tank, which is considered a major defect.
#14. When is it not necessary to do a shoulder check?
Shoulder checking is important because bicycles and riders are narrow and can easily be hidden in your blind spot. Make sure you shoulder check before you (a) open your door to get out of your vehicle, (b) pull away from the curb, (c) move to the left to merge onto a highway, or (d) move to the right to pull off to the side of the road. However, if you want to check if you’re being tailgated, use your mirrors.
#15. To turn right in a vehicle with a lot of off-tracking, you may have to
If you swing wide to the left before you turn right, another vehicle may try to pass you on your right while you are turning, which could lead to a collision. Instead, make the right turn with the rear of your vehicle as close to the curb as possible, cross into the oncoming lane if necessary, and turn wide as you complete the turn. This will deny other vehicles enough room on the right to try to pass you.
#16. If your truck is transporting cargo, you must check the securement of the cargo within the first ______ of the trip.
Drivers of trucks transporting cargo must inspect the securement of the cargo within the first 80 km of a trip. From then on, the driver must re-inspect the securement on a regular basis at the earliest of (a) three hours of driving, (b) 240 km of driving, or (c) a change in the driver’s duty status
#17. Where are a large vehicle’s blind spots?
A large vehicle’s blind spots exist to the front, the rear, and both sides of the vehicle. These blind spots can be large enough to completely hide another vehicle from the driver’s view. Remember: If you can’t see the driver of a large vehicle, either directly or in one of the vehicle’s mirrors, the driver can’t see you.
#18. Every motor vehicle must be equipped with at least ______ separate braking systems.
Every motor vehicle must be equipped with at least two separate braking systems. One braking system must be mechanical, such as a ratchet and pawl (notched wheel) mechanism or a spring brake mechanism. The mechanical system should be used as a backup in case the primary braking system fails.
#19. An engine governor is
Large commercial vehicles are equipped with engine fuel governors. An engine governor (not to be confused with the air compressor governor in an air braking system) acts as an engine speed controller by regulating the amount of fuel going to the engine. A governor also lets you start a vehicle on level ground and on grades without using the throttle.
#20. Every commercial passenger vehicle with a seating capacity of more than 12 occupants (including the driver) must have which of the following?
Every commercial passenger vehicle with a seating capacity of more than 12 occupants (including the driver) must have lights that illuminate the passenger aisle between sunset and sunrise, and a light at each entrance that turns on when the door is opened.
