Utah CDL Practice Test

Not quite. The answer is one-half times the weight of the cargo tied down.

Under federal regulations, the aggregate working load limit of the tie-downs used to secure cargo must be at least one-half times the weight of the cargo. Federal regulations also specify a formula to compute the aggregate working load limit of the tie-downs from the working load limits of the individual tie-downs. The _working load limit_ of an individual tie-down is defined as the maximum load that may be applied to it, as specified by its manufacturer. [49 CFR 393.106],

Source: 49 CFR 393.5

Not quite. The answer is Turning the wheel back in the other direction after steering to avoid a hazard

In a quick turning maneuver such as recovering from a drive-wheel braking skid or moving from the shoulder onto the roadway at a higher speed, your vehicle will tend to overshoot and keep turning in the same direction more than you want it to. Be ready to counteract this by turning your steering wheel in the opposite direction. This is known as countersteering.

Not quite. The answer is It takes 14 seconds to clear a single track and more than 15 seconds to clear a double track.

A typical tractor-trailer will take at least 14 seconds to fully clear a single railroad track and more than 15 seconds to fully clear a double track.

Not quite. The answer is You should remove ice from the radiator shutters.

In extremely cold weather, very cold air flowing onto the radiator and through the engine compartment can prevent the engine from warming up (and also keep your heater from working well). Radiator shutters or a winterfront restrict this air flow to let the engine warm up. However, don't overdo it. Keep the winterfront partially open or keep the radiator shutters free from ice. If the shutters freeze shut or the winterfront is closed too tightly, the engine may overheat from lack of sufficient air.

Not quite. The answer is On slippery roads, it takes longer to stop and it is harder to turn without skidding.

Slippery roads provide less traction. Your vehicle's braking distance will increase (especially on a road covered in snow or ice) and turns will be more likely to cause skids. For safety, reduce your speed by about one-third on a wet road or about one-half on a snow-covered road. On an ice-covered road, slow down to a crawl and consider stopping altogether.

Not quite. The answer is post-trip, pre-trip, and en-route.

Before you drive your vehicle, perform a pre-trip inspection to make sure everything is in working order. Each time you stop during your trip, check critical items such as your brakes, tires, and cargo. After your trip, perform another inspection and report anything that may require maintenance.

Not quite. The answer is start to slow down so you will be ready to stop.

A traffic light that has been green for a long time is probably about to change to a yellow and then a red light. When approaching such a green light, slow down and be prepared to stop. Never speed up in an attempt to "beat the light" before it turns red.

Not quite. The answer is a third party

Lumpers (freight handlers) are persons usually employed by a third party to unload cargo from the truck at the receiver. Lumpers are tasked with operating the unloading equipment, such as fork lifts and pallet jacks, so you won't have to do this. The fee for using lumpers should be charged to the carrier; it is illegal under US law for you to be forced to eat the cost yourself.

Source: 49 US Code § 14103

Not quite. The answer is Hard steering and possible damage to the tires

Keep your load of cargo balanced. You need enough weight on both the steering and drive axles for adequate traction. However, too much weight on the steering axle can result in hard steering and even damage the steering axle and tires. Too much weight on one side can increase the risk that the cargo will shift.

Not quite. The answer is keep your wheels from locking when you brake hard.

ABS kicks in only to keep the wheels from locking, which could cause a skid. ABS does not change the way you normally brake the rest of the time. It is not a substitute for careful braking, defensive driving, good brakes, or regular maintenance.

Not quite. The answer is Both of the above

Use your brake lights to warn other drivers that you are preparing to slow down or stop, or there is a hazard ahead for which you'll have to slow down.

Not quite. The answer is where the rear of your vehicle is while you make turns.

Before driving your vehicle, adjust your mirrors to show parts of your vehicle as well as what's around your vehicle. During your trip, you can use your mirrors to keep an eye on your tires and open cargo if any. When you turn, check your mirrors to make sure that the rear of your vehicle isn't hitting anything. If you're pulling a trailer, use your mirrors to keep an eye on it. If it starts to jackknife, you'll be able to spot it in your mirrors.

Not quite. The answer is It is less dangerous to drive onto the shoulder than to risk a collision.

If an oncoming driver has drifted into your lane, try to escape to the right, even if it means leaving the pavement and driving onto the shoulder. Most shoulders are strong enough to support the weight of a large vehicle. Never allow a head-on collision. Head-on collisions are often fatal.

Not quite. The answer is one-fourth

In 2020, there were 1,900 crashes at railroad crossings in the United States. These included 437 crashes of CMVs at railroad crossings. This means 23% of all train-vehicle crashes involved a CMV.

Not quite. The answer is Upshift.

If your hydraulic brakes fail while you're driving, try pumping the brake pedal to build up enough hydraulic pressure to stop your vehicle. If this fails, downshift to use engine braking and apply the parking brake. Release the parking brake before you lock the wheels. If all else fails, look for an escape route. Head for an escape ramp or an open field and let your vehicle slow to a stop.

Not quite. The answer is that you don't exceed gross weight or axle weight limits.

While you cannot actually inspect sealed loads, it's still your responsibility to ensure that you do not exceed your axle weight limits or gross weight restrictions, so check them both.

Not quite. The answer is When turning, you should signal early.

Three good rules for the use of turn signals when turning are as follows: (1) Signal early. State laws typically require you to signal a certain minimum distance in advance of the turn, but you may want to signal even earlier to keep other drivers from trying to pass you. (2) Signal continuously. Keep your hands on the steering wheel and keep the turn signal on as you start the turn. (3) Cancel the turn signal after you've turned (if it hasn't turned off by itself already). You should also use your turn signal before you change lanes.

Not quite. The answer is show a wider area than flat mirrors.

A convex mirror has a wider field of view than a flat mirror. However, objects viewed in a convex mirror look smaller and farther away than they really are. Bear this in mind when you're trying to judge the distance of an object that you're viewing in a convex mirror.

Not quite. The answer is Using mirrors and turn signals, turn sharply to get back onto the road.

If you've left the road but you must return to the road before stopping on the shoulder, the recommended recovery procedure is as follows: 1. Hold the wheel tightly and turn sharply enough to get right back onto the road safely. 2. Don't try to edge gradually back onto the road. If you do, your tires might grab unexpectedly and you could lose control. 3. When both front tires are on the paved surface, countersteer immediately. The two turns should be made as a single "steer-countersteer" move.

Not quite. The answer is Protect the accident scene.

At an accident scene, first protect the accident scene to help prevent another accident. Pull your vehicle as far away from traffic and as close to the side of the road as possible. Set out warning devices such as reflective triangles.