#1. A tractor-trailer travelling at high speeds creates air turbulence in which of the following areas?
Large vehicles travelling at high speeds create air turbulence that can be hazardous to smaller vehicles. A tractor-trailer creates air turbulence directly in front of the truck, alongside the cab, by the rear area of the trailer, and at the immediate rear of the trailer.
#2. Where is a single-unit (straight) truck’s central weight distribution point?
The central weight distribution point of the average single-unit (straight) truck is located partially over or just ahead of the rear axles. That is where the load should be placed.
#3. When must a carrier check your driving record?
Every carrier you work for is required to check your driving record before hiring you and then once a year after hiring you.
#4. Who has the right-of-way on a steep hill on an industrial road?
Industrial roads are often rougher and present different types of conditions than public roads. In general, drivers are expected to follow the rules of the road set out in the Motor Vehicle Act. However, you should yield the right-of-way to a loaded truck that is coming down a steep hill on an industrial road
#5. To inspect an air brake system, you should wear
The compressed air that is used in air brake systems can be hazardous if you get near it when it is being exhausted from the vehicle. Compressed air leaving the vehicle travels at a very high speed and carries moisture, oil, dirt and dust. Plus there is always the chance of an accident in procedures that require you to release the brakes and crawl underneath your vehicle to inspect various items. While you’re inspecting the air brakes, wear a bump cap or hard hat, safety glasses, a visible safety vest, and steel toe boots.
#6. When crossing railway tracks, you should
Do not shift gears while crossing railway tracks; shifting gears would increase your chance of stalling on the tracks. Unless the crossing signals or flag person are warning of an approaching train, you don’t have to stop at the railway crossing unless you’re carrying a load of dangerous goods.
#7. In determining how well your air brake system works, which is NOT a significant factor?
The faster you drive or the greater your vehicle’s weight, the longer your braking distance will be. A fully loaded tractor-trailer can weigh over 36 metric tons. The weight of a 180-pound man is only a fraction of one percent of that, so the effect should be insignificant.
#8. Why is it important to know which parts of the air brake system exhaust air?
Compressed air may be exhausted from several different ports in the braking system. This air travels at a very high speed from the vehicle and carries moisture, oil, dirt and dust. It can be dangerous if it hits your eyes or ears. Know the location of all air exhaust ports so you can keep away from them, such as when you’re draining the air tanks.
#9. What can cause a trailer to swerve or whip across the roadway?
Swerving or whipping of a trailer can be caused by a shifting load, improper trailer connections, sudden steering changes, or driving too fast for the conditions. It can also be caused by mechanical problems, such as dragging brakes or a flat tire
#10. Which of the following is true about B-train couplings?
In a B train, the converter is part of the lead trailer. The fifth wheel assembly sits on the rear axle of the lead trailer. No converter dolly is required because the second unit connects directly to the extended frame of the lead unit.
#11. When approaching a narrow bridge from a curve, you should
When entering a narrow bridge with a curved approach, proceed with caution and awareness of the amount of off-tracking your vehicle displays. Adjust your speed and position on the roadway appropriately.
#12. Which of the following should you check periodically during your trip?
During your trip, check safety-critical components regularly. These include (a) the tires and wheels, (b) the brakes and hubs, (c) the trailer coupling, and (d) the suspension and driveline. Also, the National Safety Code (NSC) requires you to recheck the cargo securement system whenever your duty status has changed, you’ve been driving for three hours, or you’ve driven 240 kilometres, whichever comes first.
#13. Unless your vehicle has antilock brakes (ABS), using light brake pressure on an icy road will
If you don’t have ABS and you brake hard on an icy road, the force of your brakes will overcome the low traction with the road surface. This will cause the wheels to lock up, possibly resulting in a skid. Instead, use extremely light pressure on the brake to control your vehicle’s speed and help prevent the wheels from locking up. If your vehicle has ABS, feel free to brake hard if necessary. The ABS computer will keep your wheels from locking up.
#14. An oversize load permit may require you to
If your load is oversize, you’ll have to apply for an oversize permit. The permit will come with a set of requirements that you will have to meet when travelling with the oversize load. These requirements may include (a) escort by one or more pilot cars; (b) the days of the week and the times during which you may travel; (c) the routes you must use; and (d) any flags, lights, or signs that must be attached to your vehicle.
#15. A tiedown must not be used for cargo securement if
it is tangled or significantly damaged in some way: gouges in, or excessive wear of, the chain links; knots in the chain, rope or webbing; spread or disturbed grab hooks; and so forth.
#16. When transporting a large boulder on a flatbed vehicle, you should support it with at least ____ piece(s) of hardwood blocking and secure it with at least ____ chain(s).
According to the National Safety Code Standard 10 (Cargo Securement), each large boulder must be supported on at least two pieces of hardwood blocking that extend the full width of the boulder. Each cubic-shaped boulder must be secured with two or more chains placed transversely across the vehicle and as close as possible to the hardwood blocking. Each non-cubic-shaped boulder must be secured with two or more chains forming an “X” pattern over the boulder and passing over the centre of the boulder.
#17. What is the Gross Vehicle Weight Rating (GVWR)?
The Gross Vehicle Weight Rating (GVWR) is a manufacturer’s rating that defines the combined weight of a vehicle and the maximum load it should carry.
#18. Which of the following statements are true about timber used as dunnage?
The tiedowns may have to withstand forces up to 0.8 g. Any timber used as dunnage, chocks or cradles for blocking or bracing must be strong enough that it will not be split or crushed by the cargo or the tiedowns. Note: In this context, “1 g” means the acceleration of one Earth gravity (9.8 metres/second²) – NOT one gram.
#19. What does an ABS system do?
#20. If your brakes get wet, what should you do?
During extremely wet conditions, or after driving through water, test your brakes by applying slight pressure with your foot to the brake pedal. Keep this pressure on for a short distance. The resulting heat will dry out the brakes.
#21. To back up with the aid of a guide, what should you do?
Before backing, you and your guide should agree on some convenient hand signals that the guide can use to direct you – especially a hand signal for “Stop.” Position the guide where there’s a clear, continuous view of the backing path that your vehicle will follow. Make sure you can see the guide throughout the manoeuvre.
#22. Which of the following can increase the length of your danger zone (as defined in the British Columbia Driving Commercial Vehicles Manual)?
The section of road that your vehicle travels through before it can stop is called the vehicle’s danger zone, because it’s physically impossible for you to stop the vehicle in time to avoid a collision with any object or person. As your speed increases, the length of your danger zone increases. Less than ideal road conditions, such as rain, snow, ice or gravel increase the length of your danger zone. Driving fast under these road conditions increases your danger zone even more. Finally, heavy commercial vehicles have more kinetic energy than cars travelling at the same speed and therefore take longer to brake to a stop
#23. When a tractor-trailer is loaded, the cargo should be
Keep your cargo as close to the centre of your rig as possible so it won’t cause your trailer to lean to one side or the other. It’s also critical to spread out your cargo and keep it as close to the trailer deck as possible. As the height of a load increases, its centre of gravity rises (i.e., the load becomes top-heavy). A vehicle with a higher centre of gravity is more likely to roll over.
#24. Stopping on icy roads requires
When driving on ice, sleet or snow, drive slowly and increase your following distance so you can manoeuvre gradually. Apply light pressure to your brake pedal. Avoid turning the steering wheel in a quick or erratic manner.
#25. Under hours of service regulations, a sleeper berth can be
Under hours of service regulations, neither a reclining seat nor the rear seat of a bus qualifies as a sleeper berth.
