TEst questions

Question 1

During your pre-trip test, when examining hoses with the instructor, you need to look for

Answer 1

puddles on the ground

Question 2

According to the Colorado Commercial Driver License Manual, the minimum tread depth for front tires is

Answer 2

4/32 inch

Question 3

If you are traveling at 55 mph in a 30-foot vehicle, you should leave ___ seconds of following distance.

Answer 3

4 seconds
The formula for following distance is one second per ten feet of vehicle, plus an extra second if you are traveling over 40 mph. So for a 30-foot vehicle going 55 mph, you should leave a following distance of 4 seconds.

Question 4

In which two special conditions should you downshift?

Answer 4

Starting down a hill and entering a curve
Downshifting before starting down a hill allows you to take advantage of engine braking. You should downshift to the gear required to climb the hill or lower. Downshifting before a curve improves stability and ensures that you will have the power to accelerate out of the turn.

Question 5

what components should you keep an eye/pay attention to when driving?

Answer 5

You should keep an eye on all of your vehicle’s key systems during your trip, such as the instruments, gauges, tires, voltmeter, mirrors, and cargo. Make sure you put your phone away for the entire journey.

Question 6

How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?

Answer 6

Check for yellow ABS malfunction lamps on the instrument panel
Check if your vehicle was manufactured after March 1, 1998. (Such vehicles are required to have the panel light.)
Look for wheel speed sensor wires that are coming from the rear of your brakes.

Question 7

What is Gross Vehicle Weight (GVW)?

Answer 7

the total weight of a single vehicle and its load

Question 8

what is a common cause of tire fires

Answer 8

underinflated tires and dual tires that touch are the most common causes of tires fires.

Question 9

If you double your speed how much more distance will it take to stop?

Answer 9

FOur times as much.
When your speed doubles, your stopping distance nearly quadruples (i.e., four times as much). For example, doubling your speed from 15 to 30 mph will increase your stopping distance from 46 to 148 feet.

Question 10

which of the following is a key steering component?

Answer 10

Gear box

The gear box is an integral part of the steering system. All the other choices are key parts of the suspension system.

Question 11

You should inspect wheel bearing seals for

Answer 11

leaks

The most likely problem with wheel bearing seals is leaking, so you should check for grease on the wheels.

Question 12

To help you stay alert and safe while driving, you should

Answer 12

avoid medications whose warning labels mention drowsiness.

Question 13

which of these is NOT part of the basic method for shifting up?

Answer 13

Accelerate while pressing the clutch and turn towards the driver’s side.

Question 14

On wet roads you should reduce your speed by

Answer 14

1/3
When a road is wet, stopping distance is increased, and you should reduce your speed by one-third. On snow, slow to one-half your usual speed. On icy roads, slow to a crawl and stop driving as soon as you can do so safely.

Question 15

If you are drowsy, what action should you take before driving farther?

Answer 15

Pull off the road and get some sleep.
You cannot make drowsiness disappear by drinking coffee or other caffeinated beverages or by getting fresh air. They may make you feel more alert momentarily, but the only real solution is to get off the road and get some rest.

Question 16

Where should you place your warning devices, if you must stop on a one-way road or divided highway?

Answer 16

10 100 and 200 feet toward approaching traffic
This is required by Federal Motor Carrier Safety Regulations Part 392.22, issued by the Federal Motor Carrier Safety Administration (FMCSA). Those regulations also specify where to place warning devices on other types of roadways such as two-way roads and curves.

Question 17

While performing the pre-trip inspection, you should place the starter switch key into your pocket because

Answer 17

someone could start and move the truck.
While you are performing the pre-trip inspection, you do not want someone who doesn’t know you’re underneath the truck to start the engine and move the truck.

Question 18

Always try to back toward the drivers side because

Answer 18

You can see better, watching the vehicle’s rear out the side window.
You should always back toward the driver’s side because you will be able to see things much more easily. For example, you can keep an eye on the vehicle’s rear by viewing it out your side window. If your truck pulls in either direction, it needs service, and your neck’s comfort should not affect your safety decision.

Question 19

How far ahead should drivers look while driving, according to the manual?

Answer 19

12 to 15 seconds.
Good drivers look ahead for 12 to 15 seconds; i.e., the distance that your CMV will travel in that time. At highway speeds, this is about 1/4 mile.

Question 20

Letting the air out of hot tires

Answer 20

is a bad idea beacuse when the tires cool off, the pressure will be too low.
When tires get hot, the air pressure increases. However, relieving that extra pressure will leave the air pressure too low when the tires cool again, and then the tires may catch fire or blow out. If your tires are too hot to touch, stop until they have cooled down.

Question 21

To maintain alertness during the trip, drivers should

Answer 21

do all of the above.

Sleep debt is a dangerous condition in which missing sleep adds up and you risk falling asleep at the wheel until you are fully rested. People are often surprised when they find out that getting less than six hours of sleep per night triples your risk of accident. To prevent drowsiness before a trip, the driver should get adequate sleep (adults need 8 to 9 hours to maintain alertness); prepare route carefully to identify total distance, stopping points and other logistic considerations; schedule trips for the hours you are normally awake, not the middle of the night; drive with a passenger; avoid medications that cause drowsiness; consult your physician if you suffer from daytime sleepiness, have difficulty sleeping at night or take frequent naps; incorporate exercise into your daily life to give you more energy.

Question 22

While driving at night, which beams should you use as often as you can?

Answer 22

high beams
When driving at night, you should use your high beams to expand your field of vision as often as possible, as long as it is safe and legal and you will not blind any other drivers. The rule of thumb is to use high beams as long as there are no approaching vehicles within 500 feet.

Question 23

in your emergency kit you do not need to have

Answer 23

A spare jacket
While a jacket might keep you comfortable, it is not a required part of your emergency kit. You must have a working fire extinguisher, warning devices, and spare electrical fuses (unless your vehicle has circuit breakers).

Question 24

Hazardous materials placards are

Answer 24

signs on the outside of the vehicle that identify the hazard class of the cargo
Hazardous materials placards are four regulated signs on the outside of the vehicle that identify the hazard class of the cargo for those who need to know, such as emergency service personnel or those who load and unload cargo.

Question 25

For how long will you lose your CDL driving privileges if you are convicted of a second DUI offense in either a CMV or your private vehicle?

Answer 25

for life
A second DUI offense, regardless of the vehicle being driven, will cause you to lose your CDL for life. Consider your first DUI a wake-up call and a chance to get help - because your second offense will mean unemployment in your chosen profession.

Question 26

Which of the following determine(s) the safe speed for going down a steep downgrade?

Answer 26

To select a safe speed for going down a steep downgrade, you should consider such factors as its steepness, its length, the road and weather conditions, and the weight of your vehicle and its cargo.

Question 27

During your pre-trip test, when examining hoses with the instructor, you need to look for

Answer 27

puddles on the ground.
During your pre-trip test, when inspecting hoses, you need to look for signs of leaks, such as puddles on the ground or fluids that are dripping on the underside of the engine or transmission. Also check the hoses for leaks or other problems.

Question 28

The temperature has just dropped to freezing. Which of the following areas may be slippery?

Answer 28

Once the temperature dips down to freezing, some sections of the roadway will begin to freeze, starting with shaded areas and bridges. A road that looks wet may have a layer of black ice, which is slippery.

Question 29

How can you start moving without rolling backwards?

Answer 29

If you have a manual transmission vehicle, partly engage the clutch before you take your right foot off the brake. Put on the parking brake whenever necessary to keep from rolling back. Release the parking brake only when you have applied enough engine power to keep from rolling back. On a tractor-trailer equipped with a trailer brake hand valve, the hand valve can be applied to keep from rolling back.

Question 30

Do empty trucks have the best braking?

Answer 30

No
Trucks brake best when they are being used as they were designed: to carry a properly balanced load. Empty trucks actually have greater stopping distances than loaded trucks because they have less traction.

Question 31

starting the engine and inspecting the cab involves each of the following tasks, except

Answer 31

starting the engine, the putting the gearshift in neutral.
When performing this part of the inspection, you must put the gearshift in neutral, then start the engine and listen for any unusual noises. Once you perform the engine check, check all your gauges and controls, such as the air pressure gauge and transmission controls.

Question 32

when backing it is important to use a helper

Answer 32

because you have blind spots.
Using a helper when you are backing is important since you will be dealing with blind spots that you cannot see. Before you start, the two of you should agree on a set of hand signals - especially “stop.”

Question 33

which of the following should you not do if you experience a tire failure?

Answer 33

engage the brakes hard and immediately.

Braking could cause the vehicle to go out of control, so brake gently only after the vehicle has slowed down.

Question 34

how many seconds does it take for a normal tractor trailer to clear a double track?

Answer 34

More than 15 seconds
You can expect it to take more than 15 seconds for a regular tractor-trailer to clear a double track, and 14 seconds to be safely over a single track.

Question 35

what is the best way to calculate how many seconds of following distance you have?

Answer 35

wait until a vehicle passes a shadow or landmark and start to count the seconds until you reach it.
Count how many seconds it takes you to reach some object after the car in front of you has passed it. You can count seconds as follows: “One-thousand-and-one, one-thousand-and-two,…” The other three choices here either will not work or involve dangerous distractions. Note that you should increase your following distance in heavy traffic, in bad weather, with heavy vehicles, or at higher speeds.

Question 36

which of the following types of vehicles can be operated without a cdl?

Answer 36

There are several types of vehicles that can be operated without a CDL but only under certain conditions. Check the list in the Colorado Commercial Driver License Manual or contact the Colorado DMV for details.

Question 37

total stopping distance equals

Answer 37

perception distance + reaction distance + braking distance.
Total stopping distance is the sum of your perception distance (how far the vehicle goes from when you see the hazard until your brain processes it), reaction distance (how far the vehicle goes from when your brain orders your foot to take action until your foot actually starts to brake), and braking distance (how far the vehicle continues to travel once you apply the brake).

Question 38

before transporting a sealed load, you must check

Answer 38

that you dont exceed gross weight and axle weight limits
You cannot actually inspect sealed loads, but it’s still your responsibility to ensure that you do not exceed your axle weight limits or gross weight restrictions.

Question 39

The most important hand signal that you and a helper should agree on is

Answer 39

stop
You and your helper must agree on a hand signal for “stop” so that you’ll be able to stop what you are doing before an incident occurs.

Question 40

What might happen if you swing wide to the left before you turn right?

Answer 40

someone might try to pass you on your right.
If you swing wide, a driver might try to pass you on your right while you are turning. Instead, make the turn with the rear of your vehicle as close to the curb as possible and turn wide as you complete the turn. This denies drivers room on the right to try to pass you.

Question 41

how many tie downs are required for a 20 foot load?

Answer 41

2
The rule is that you should have one tie-down per ten feet of cargo, and at least two tie-downs per load regardless of its length. So for 20 feet, you would have two.

Question 42

To transport cargo safely, which of these are you NOT responsible for?

Answer 42

ensuring the freshness of sealed cargo
You are not responsible for the state of sealed cargo, nor can you inspect it. You are only responsible for the safety of the cargo, ensuring that it is balanced, secured, and not overloaded, and does not get in the way of emergency equipment.

Question 43

why should you cover cargo?

Answer 43

There are several reasons to cover your cargo, including protecting other people and the cargo itself. It will also help you comply with regulations in several states.

Question 44

An anti-lock braking system (ABS) will

Answer 44

keep your brakes from locking up when you brake hard.
ABS kicks in only to keep the wheels from locking up, 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.

Question 45

Which of the following is NOT true about an escape ramp?

Answer 45

it is of no use if you are traveling to fastEscape ramps are designed with soft gravel, turning uphill, or both, to slow down vehicles that experience brake failure on a downgrade. Regardless of your speed, look for one of these escape ramps, which can save lives, equipment, and cargo.

Question 46

Which of the following statements about retarders are correct?

Answer 46

While retarders can help reduce the need for braking, they can make a skid more likely in inclement weather or whenever your wheels have poor traction. Therefore, you should always turn off your retarder in poor weather.

Question 47

On which of the following types of fires should you NOT use a B:C fire extinguisher?

Answer 47

wood
A B:C fire extinguisher should not be used on burning materials that you can use regular water on, such as wood, paper, and cloth. These require an A or A:B:C fire extinguisher.

Question 48

How often must you stop to check your cargo while on the road?

Answer 48

While the rules vary by jurisdiction, it’s a good idea to check your cargo within the first 50 miles of your journey. While you should then check it as often as necessary, the manual recommends every 3 hours or 150 miles as a rule of thumb.