1 / 50
A. Double clutching should not be used when the road is slippery
B. Double clutching should only be used with a heavy load
C. You can use the tachometer to tell you when to shift
Use either the tachometer or the speedometer and upshift/downshift at the right rpm or road speed.
2 / 50
A. The total weight of single plus load
B. The total weight of a powered unit plus trailer(s) plus the cargo
C. The total weight of a powered unit plus trailer(s)
D. The total weight of single vehicle
The Gross Combination Weight Rating (GCWR) is the value specified by the manufacturer of the power unit and the towed unit(s), including load, or any combination thereof.
3 / 50
A. Many accidents are caused by drivers keeping too much space in front of their vehicles
B. When the road is slippery you should keep more space in front of your vehicle
C. Smaller vehicles require more space to stop than larger ones
Remember that when the road is slippery, you need much more space to stop, and should keep more space in front of your vehicle.
4 / 50
A. Downshift to stop
B. Stop driving and park where it is safe to do so
C. Apply the brakes often to keep the linings dry
If the surface is icy, reduce speed to a crawl and stop driving as soon as you can safely do so.
5 / 50
A. When double clutching, you should let the RPM's decrease while the clutch is released, and the shift lever is in neutral
B. When you downshift for a hill, you should do so after you start down the hill
C. When you downshift for a curve, you should do so before you enter the curve
Slow down to a safe speed, and downshift to the right gear before entering the curve. This lets you use some power through the curve to help the vehicle be more stable while turning. It also allows you to speed up as soon as you are out of the curve.
6 / 50
A. Go straight ahead even if the steering wheel is turned
B. Slide sideways and spin out
C. Go straight ahead but will turn if you turn the steering wheel
In a front-wheel skid, the front end tends to go in a straight line regardless of how much you turn the steering wheel. On a very slippery surface, you may not be able to steer around a curve or turn.
7 / 50
A. Windshield washer antifreeze should be added to the washer reservoir
B. There is no need to worry about engine overheating when the weather is very cold
C. In snowstorms, wiper blades should be adjusted so that they do not make direct contact with the windshield
D. Exhaust system leaks are less dangerous in cold weather
Use windshield washer antifreeze to prevent freezing of the washer liquid.
8 / 50
A. Exhaust, electrical, hydraulics, and engine
B. Robotics
C. Brake system
There are four basic types of retarders: exhaust, engine, hydraulic, and electric.
9 / 50
A. All the above
B. Use a smaller following distance
C. Slow down gradually
D. Apply the brakes during turns
I It will take longer to stop, and it will be harder to turn without skidding, when the road is slippery. Wet roads can double stopping distance at any speed, reduce speed, and slow down gradually on a wet road.
10 / 50
A. Steering that feels heavy
B. A loud bang
C. All answers are correct
D. Vibration
When driving a loud bang, vibrations, or heavy steering can indicate that a tire has failed.
11 / 50
A. The vehicles taillights should be kept on warning other drivers
B. You do not need to put out reflective triangles unless the vehicle will be stopped for 30 minutes or more
C. If a hill or curve keeps drivers behind you from seeing the vehicle within 500 feet, the rear reflective triangle should be moved back down the road to give adequate warning
If line of sight view is obstructed due to hill or curve, move the rear-most triangle to a point back down the road so warning is provided up to 500 feet.
12 / 50
A. All answers are correct
B. Use your brake lights to warn drivers behind you
C. Turn on you flashers / hazard lights
D. Drive slowly
Driving in work zones require extra care, and because of the workers risking their lives to keep the road in good condition you should drive slowly, use your hazards, and use your brake lights as communication devices.
13 / 50
A. Making sure that cargo is properly secured
B. Recognizing possible overloads
C. Ensuring the freshness of sealed cargo
D. Inspecting the cargo
You cannot inspect sealed loads, but you should check that you don't exceed gross weight and axle weight limits, and that the cargo is properly secured.
14 / 50
A. All of the above
B. Lowboy
C. Moving van
D. Car carrier
These trailers can get stuck on raised crossings: Low slung units (lowboy, car carrier, moving van, possum-belly livestock trailer). Single-axle tractor pulling a long trailer with its landing gear set to accommodate a tandem-axle tractor.
15 / 50
A. purposely straddling two lanes of traffic.
B. frequent changes of speed.
C. purposely blocking another vehicle from changing lanes.
Aggressive driving is the act of operating a motor vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others. The frequent changes of speed is a distracted driver trait.
16 / 50
A. All answers are correct and true
B. They protect equipment and cargo from severe damage
C. They are designed to prevent injury to drivers and passengers
D. They are used to stop vehicles that lose their brakes on downhill grades
Escape ramps are made to stop runaway vehicles safely without injuring drivers and passengers. Escape ramps save lives, equipment and cargo.
17 / 50
A. Every three hours or 150 miles
B. After each break you take
C. Within the first 50 miles
D. All of the above
Inspect the cargo and its securing devices again within the first 50 miles after beginning a trip, and you will need to inspect again after you have driven for 3 hours or 150 miles and after every break you take during driving.
18 / 50
A. less maximum axle weight for axles that are far apart.
B. less maximum axle weight for axles that are close together.
C. the same maximum axle weight for any axle spacing.
A bridge formula permits less maximum axle weight for axles that are closer together. This is to prevent overloading bridges and roadways
19 / 50
A. You can sober up in less time.
B. You see more clearly how alcohol is affecting you.
C. Judgment and self-control are affected.
Alcohol affects more and more of the brain as BAC builds up. The first part of the brain affected controls judgment and self-control.
20 / 50
A. The legal maximum weight allowed by a state can be considered safe for all driving conditions
B. If the shipper loads cargo, the driver is not responsible for overloading
C. Slight overloading of a vehicle can make its brakes work better
D. State laws dictate legal weight limits
You must keep weights within legal limits. States have maximums for GVWRs, GCWRs, and axle weights.
21 / 50
A. If the wheels are skidding, you cannot control the vehicle
B. Disconnecting steering axle brakes will help keep your vehicle in a straight-line during emergency braking
C. It wears brake linings
Emergency braking does not mean pushing down on the brake pedal as hard as you can. That will only keep the wheels locked up and cause a skid. If the wheels are skidding, you cannot control the vehicle.
22 / 50
A. They must be no more than 8 inches above the ground when the vehicle is fully loaded.
B. They must be no more than 15 inches above the ground when the vehicle is completely unloaded.
C. It depends on the state.
Currently, there are no federal regulations governing the height of splash guards. Each state is free to issue its own regulations, and those regulations vary from one state to another.
23 / 50
A. hydroplaning.
B. fishtailing.
C. off-tracking.
When a vehicle goes around a corner, the rear wheels follow a different path than the front wheels. This is called off-tracking. Longer vehicles will off-track more, the rear wheels of the powered unit will off-track some, and the rear wheels of the trailer will off-track even more.
24 / 50
A. When the tires skim over the road surface
B. When you hit a pothole
C. Driving in the snow
In some weather, water or slush collects on the road. When this happens, your vehicle can hydroplane. It's like water skiing--the tires lose their contact with the road and have little or no traction. You may not be able to steer or brake.
25 / 50
A. not worry about the height clearance as long as you stay on state or federal highways.
B. stop and make sure if you aren't certain that a clearance is high enough.
C. assume all clearances are high enough.
Hitting overhead objects is dangerous. Make sure you always have overhead clearance.
26 / 50
A. height.
B. age.
C. body weight.
BAC is determined by the amount of alcohol you drink, how fast you drink, and your weight.
27 / 50
A. apply extra braking power to the non-drive axles.
B. help slow the vehicle while driving and reduce brake wear.
C. help prevent skids and reduce brake wear.
Retarders help slow a vehicle, reducing the need for using your brakes. They reduce brake wear and give you another way to slow down.
28 / 50
A. Both of the above
B. Auxiliary transmissions
C. Multi-speed rear axles
Multi-speed rear axles and auxiliary transmissions are used on many vehicles to provide extra gears. You usually control them by a selector knob or switch on the gearshift lever of the main transmission.
29 / 50
A. Engine oil level
B. Condition of belts and hoses
C. Valve clearance
Oil Level: Indicate where dipstick is located and see that oil level is within safe operating range. Engine Compartment Belts Check belts for snugness up to 3/4-inch play at center of belt with no cracks or frays. Hoses: Inspect hoses for condition and leaks. Valve clearance is the incorrect answer.
30 / 50
A. Statistics show that drivers who have been drinking have a much greater chance of being in a crash
B. All answers are correct
C. Alcohol first affects judgment and self-control, which are essential for safe driving
D. A driver can lose his/her license for driving while under the influence of alcohol
Alcohol impairs muscle coordination, reaction time, depth perception, and night vision. It also affects the parts of the brain that control judgment and inhibition. These effects mean increased chances of a crash and chances of losing your driver's license. Accident statistics show that the chance of a crash is much greater for drivers who have been drinking than for drivers who have not.
31 / 50
A. Move the vehicle slowly and see if it stops when the brake is applied
B. Measure the free play in the pedal with a ruler
C. With the vehicle stopped, pump the pedal three times; apply firm pressure for 5 seconds, then hold and see if the pedal moves
If the vehicle has hydraulic brakes, pump the brake pedal three times. Then apply firm pressure to the pedal and hold for five seconds. The pedal should not move. If it does, there may be a leak or other problem.
32 / 50
A. One missing leaf in a leaf spring can be dangerous
B. All answers are correct and true
C. Brake pads should not have brake fluid on them
D. Brake shoes should not be worn dangerously thin
Linings, or the friction material on brake pads, must not be loose or soaked with oil or grease and must not be dangerously thin. Mechanical parts must be in place, not broken or missing. Leaf springs should not have missing, shifted, cracked, or broken leaf.
33 / 50
A. Spilled fuel cleaned up quickly and properly
B. Flammable cargo with proper ventilation
C. Driver smoking in a rest area
D. Short circuits and loose connections
The following are some causes of vehicle fires: Spilled fuel not properly cleaned up; improper use of flares; under-inflated tires and duals that touch; short circuits due to damaged insulation or loose connections; driver smoking in or around the vehicle; improper fueling and loose fuel connections; flammable cargo, improperly sealed or loaded cargo, with poor ventilation.
34 / 50
A. outrun you.
B. make turns faster than you.
C. stop faster than you.
Remember, if the vehicle ahead of you is smaller than yours, it can probably stop faster than you can. You may crash if you are following too closely.
35 / 50
A. 2 blocks
B. 1 block
C. As far ahead as you can see
Most good drivers look at least 12 to 15 seconds ahead. That means looking ahead the distance you will travel in 12 to 15 seconds. At lower speeds, that's about one block.
36 / 50
A. Driver smoking and following too close
B. Underinflated tires and duals that touch
C. Tight turns and gravel roads
The following are some causes of vehicle fires: spilled fuel, improper use of flares, under-inflated tires, duals that touch, short circuits, loose connections, improper fueling, loose fuel connections, flammable cargo that is improperly sealed or loaded cargo or has poor ventilation.
37 / 50
A. You should review it once a week.
B. It doesn't have to be reviewed.
C. You should review it during your pre-trip inspection.
Before performing the pre-trip inspection on your vehicle, you must review the inspection report made by the previous driver. Only if defects reported earlier have been certified as repaired or not needed to be repaired, should you sign the previous driver's report.
38 / 50
A. Empty trucks always stop in a shorter distance than fully loaded ones
B. As the speed of a vehicle doubles, its stopping distance also doubles
C. You should choose a speed that lets you stop within the distance that you can see ahead
D. You should always brake during curves
You should always be able to stop within the distance you can see ahead.
39 / 50
A. Steer around it when it is safe to do so
B. Stop and direct traffic around it.
C. Brake hard to avoid hitting it
Steering around the object when it is safe to do is the safest action.
40 / 50
A. Starting down a hill and entering a curve
B. Starting up a hill and finishing a curve
C. Starting up a hill and entering a curve
D. Starting down a hill and finishing a curve
Special conditions where you should downshift are: before starting down a hill slow down and shift down to a speed that you can control without using the brakes hard, and before entering a curve slow down to a safe speed and downshift to the right gear before entering the curve.
41 / 50
A. Both above
B. The weight transmitted to the tires from the axle
C. The weight transmitted to the ground by one axle or one set of axles
D. No answers are correct
Axle Weight is the weight transmitted to the ground by one axle or one set of axles
42 / 50
A. Not enough weight on the front axle
B. Turning too sharply
C. All answers are correct
D. Over acceleration
Turning too sharply, not enough weight on the front axle, and over acceleration are all example of how to cause vehicle skids.
43 / 50
A. To the right side of the road
B. Straight ahead
C. Back and forth, near and far
D. To the left side of the road
Good drivers shift their attention back and forth, near and far.
44 / 50
A. Antifreeze is not needed when the weather is warm
B. If your engine overheats within 20 miles of the end of your trip, you should complete the trip and then check the problem
C. You should never remove the radiator cap on a pressurized system
D. You should never shut off an overheated engine until it cools
Never remove the radiator cap or any part of the pressurized system until the system has cooled. Steam and boiling water can spray under pressure and cause severe burns.
45 / 50
A. used to stop runaway vehicles.
B. for combination vehicles only.
C. used to get out of a burning truck.
Escape ramps are made to stop runaway vehicles safely without injuring drivers and passengers.
46 / 50
A. near; lower
B. above; lower
C. below; higher
The braking effect of the engine is greatest when it is near the governed rpms and the transmission is in the lower gears.
47 / 50
A. Carbon dioxide
B. Dry chemical
C. Water
An ABC fire extinguisher is a multi-purpose extinguisher and usually uses dry chemicals.
48 / 50
A. Brake pads should not have oil, grease, or brake fluid on them.
B. Brake shoes must not be worn dangerously thin, missing, or broken.
C. Both of the above are correct.
Brake linings must not be loose or soaked with oil or grease, and must not be dangerously thin, broken, or missing.
49 / 50
A. Trucks with a high center of gravity can get stuck on railroad tracks.
B. Trucks with a high center of gravity can stop faster.
C. Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
High center of gravity means that much of the load's weight is carried high up off the road. This makes the vehicle top-heavy and easy to roll over.
50 / 50
A. 2/3
B. 1/2
C. 1/3
Wet roads can double stopping distance. You must drive slower to be able to stop in the same distance as on a dry road. Reduce speed by about one-third on a wet road.
1 / 50
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