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287 Cards in this Set

  • Front
  • Back
You are required to stop at a railroad grade crossing when?
The cargo makes a stop mandatory under state or federal regulations.
Containerized loads?
Are generally used for freight carried part way by rail or ship.
The distance that you should look ahead of your vehicle while driving is about ____ mile at highway speeds?
1/4
Which of these is a good thing to do when driving at night?
Drive slowly enough to stop within the range of your headlights.
What should you do if you are not sure if you have enough overhead clearance?
Find another route that will not require driving under the object.
What is countersteering?
Turning the steering wheel back in the other direction after steering to avoid a traffic emegency.
When you are parked at the side of the road at night, you must?
Turn on your 4-way emergency flasher to warn others.
Which of these is not part of the engine compartment pre-trip inspection?
Valve Clearance
Which of these statements is true about double-clutching and shifting?
You can use the tachomter to tell you when to shift
Truck escape ramps?
Help avoid damage to vehicles
You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long, steep, downhill grade?
A lower gear than you would use to climb the hill.
You should signal continuously while turning because?
You need both hands on the steering wheel to turn safely.
Which piece of emergency equipment should be in your vehicle?
Warning devices for parked vehicles.
During a vehicle inspection, checking which of the following will not help prevent a fire?
Battery fluid levels
The purpose of retarders is to?
Help slow the vehicle while driving and reduce brake wear
Why is a broken exhaust system dangerous?
Poisonous fumes could enter the cab or sleeper berth.
In your mirror, you see a car approaching from the rear. The next time you check your mirror, you don't see the car. To change lanes, you should?
Wait until you are sure the car isn't in your blind spot.
Placards must be?
Placed on all four sides of a vehicle
A car suddenly cuts in front of you creating a hazard. Which of these actions should you not take?
Honk and stay close behind the car.
Most serious skids result from?
Driving too fast for conditions.
You are checking your steering and exhaust systems in a pre-trip inspection. Which of these problems should be fixed before the vehicle is driven?
Steering wheel play, more than 10 degrees. (2 inches on a 20-inch wheel)
You are driving a vehicle at 55 mph on dry pavement. About how much total stopping distance will you need to bring it to a stop?
The length of a football field.
If your brakes get wet while driving on a rainy day, what can happen when you apply the brakes?
Trailer jacknife.
Backing a commercial vehicle is?
Always dangerous
Which of the following is not characteristic of a front tire failure?
Vehicle fishtail
For a first offense of driving a commercial vehicle under the influence of alcohol or drugs, you will lose your CDL for at least?
1 year
You should avoid driving through deep puddles or flowing water. But if you can't which of these steps can help keep your breaks working?
Gently putting on the brakes while driving through water.
If someone is following you too closely (tailgating), you should?
Increase your following distance.
When a coolant container is part of a pressurized system, which of these is true?
You can check the coolant level of a hot engine.
You wish to turn right from a two-lane, two-way street into another. Your vehicle is so long that you must swing wide to complete the turn. Which of these figures shows how you should make the turn?
It's the one where you go straight and cut into the right turns right lane and back into the lane as you come out of the turn.
Which of these statements is true about mirror adjustment?
You should adjust your mirrors before you start a trip?
You must complete a written vehicle inspection report each day. You must sign the report?
If the previous driver noted any defects.
On which fires can you use water?
Tires
You do not have a HAZMAT endorsement on your commercial driver license. You may drive a vehicle transporting hazardous materials when?
*** ? The vehicle does not require placards
Convex (curved) mirrors?
Show a wider area than flat mirrors show.
You are starting your vehicle in motion from a stop. As you apply power to the drive wheel, they start to spin. You should?
*** ? Take your foot of the accelerator
You can see this sign on a vehicle ahead of you. What does this sign mean?

(It is a triangle withe thick lines around the edges except at the corners)
Slow moving vehicle
CDL medical certificates must be renewed every?
2 years
What is the proper way to hold a steering wheel?
Both hands, on opposite sides of the wheel
You are driving a heavy vehicle. You must exit a highway using an offramp that curves downhill. You should?
Slow down to a safe speed for the curve.
Which of these statements is true about staying alert to drive?
Sleep is the only thing that can overcome fatigue.
When driving in cold weather, your tire treat should?
Provide enough traction to steer and push the vehicle through snow.
Why will your vehicle's speed naturally increase on downgrades?
Gravity
Which of these items should be tested while the vehicle is stopped?
Hydraulic brake!
Implied constent means that when you sign the application form, you?
give your consent to be tested for alcohol in your blood.
What is the term for a commercial vehicles habit of swinging wide on turns?
Offtracking
Whenever you double your speed, your vehicle has about ____ times the destructive power if it crashes?
Four Times
Stab braking?
Involves applying the brakes and then releasing them after the wheels lock up.
You are performing a pre-trip inspection on your brakes and suspension system. Which of these statements is true?
Brake shoes should not have oil, grease, or brake fluid on them.
To avoid a crash you had to drive onto the right shoulder. You are now driving at 40 mph on the shoulder. HOw should you move back onto the pavement?
*** ? If the shoulder is clear, stay on it until your vehicle comes to a stop. Then move back onto the pavement when it is safe.
Book - You will lose your CDL for at least one year for your first offense if driving a CMV and your BAC is?
.04% or higher.
Driving under influence of alcohol or drugs.
Refusing a blood alcohol test
Leaving a scene of a collison.
Fellony, or Fatality Accident
Book - If you have a hazardous materials placard and do any of the situations that would cause a one year loss of your license the penalty is actually increased to how many years?
3 years
Book - If you have any detectable amount of alcohol under .04% what happens?
You are put-out-of-service for 24 hours
Book - Can commercial drivers attend a traffic violator school?
You may not attend to have an offense dismissed for any traffic violation!
Book - What is the commercial idling requirements near schools?
Must shut down immediately when within 100 feet of a school.
Book - What is the standard commercial idling requirements in California?
Any vehicle 10,000 GVWR must not idle longer than five minutes. Penalties start at $300
Book - What is the maximum speed limit for a commercial vehicle that isn't a three axle, pulling, bus, farm, exlplosives, or trailer bus? And what is the normal limit for these?
65 mph where posted except on 2 lane undivided highways where it is 55. All the other vehicles are 55mph max.
Book - What is the right lane rules?
Must drive in designated lanes when posted.
With no signs, right most lane.
Except, four lanes or greather can drive in one lane over from right side.
Book - What is the slow vehicle rule?
On a two-lane highway where passing is unsafe, a slow moving vehicle with 5 or more vehicles behind it must turn off the roadway at nearest desgnated turnouts or where sufficient area for a turnout exists to let traffic pass.
Book - What is the "California" intrastate commerce driving time rules?
May not drive more than 12 hours following 10 consecutive hours off duty.
Book - What is the "California" intrastate commerce On Duty Time Rules?
You may not drive after having been on duty for 16 hours. You may perform work, except for driving, after being on duty for 16 hours.

And must take 10 consecutive hours off duty before driving again.
Book - What is the "California" intrastate commerce rule on hours driving in adverse conditions?
If you encounter conditions that are dangerous and need to keep driving you may drive an extra 2 hours.
Book - What do I do if I am in a collision which results in death, injury, or property damage over $750?
Must report collision on a Report of Traffic Accident Occurring in California (SR 1) to DMV.
Book - What happens if I am driving my CMV without my License in possession?
60 days suspension on first offense.
Book - May I have more than one license?
No. I can only have one license in one state!
Book - How soon must I notify my employer of "Any" traffic violation except parking?
30 days.
Book - If I am out of state or out of area who else must I notify if I have a traffic violation of any type except parking?
Motor Vehicle License Agency within 30 days. DMV for California in my case.
Book - What should I do routinely before operating my vehicle?
A pre-trip inspection and an after-trip inspection!
Book - What is the general seven-step inspection method?
Step 1: Vehicle Overview
Step 2: Check the Engine Compartment
Step 3: Start the Engine and Inspect the Cab
Step 4: Turn off the Engine and Check the Lights
Step 5: Do a Walkaround Inspection
Step 6: Check the Signal Lights
Step 7: Start the Engine and Check
Book - If you have to back up what should I do?
Look at your path.
Back Slowly, using your mirrors.
Back and turn toward the driver's side whenever possible.
Use a helper whenever possible.
Book - How far ahead should I be looking at distance?
12 to 15 seconds ahead.
Book - How soon should I signal before changing lanes on the freeway?
About 5 seconds.
Book - In non-freeway situations how soon should I signal?
At least 100 feet before turning.
Book - Remember something about signaling traffic while driving? It's important!
Don't do it. Don't signal people as it may cause a collision.
Book - If I stop on the side of the road what lights should I use?
Put on the four way flashers!
Book - If I am stopped on the side of the road, what is the maximum time to put out my triangles and warning devices?
10 minutes
Book - At 55 mph how far will it take to stop in an emergency?
6 seconds, 290 feet, about a football field.
Book - When you double your speed any impact is?
4 times greater!
Book - What's a good safe rule to remember when in traffic?
Go with the speed of traffic. "Go with the flow" and becareful in situations where you must go slower than traffic.
Book - What's the reason not to pull to the left a little when turning to the right at an intersection?
A car may think you are moving out of the way and go into your danger zone on the right side. So keep the rear close to the curb.
Book - Making a left hand turn at an intersection. If you have two lanes turning which lane should I use?
Use the right most lane, furthest out lane so you have the most turn radius to use.
Book - If you cannot get completely across an intersection and block traffic it is dangerous and also?
Against the law to enter the intersection if you can't get all the way through it.
Book - Near work zones if people can't see around you or it posses a risk do what?
It's okay to use your four way flashers.
Book - In Vehicle communication is dangerous. What should I do?
Never place a call.
If possible pull off the road in a safe place when receiving a call.
Book - Controlled breaking is?
You hit the breaks as hard as you can without locking them up. If you lock them you release and reapply.
Book - Stab Breaking is?
Only works in NON-abs vehicles. Hit the breaks all the way, release when they lock. Let vehicle roll and straighten, reapply breaks.
Book - What is the best vehicle safety feature?
A safe driver
Book - Youre safely home and had a drink and you are called for duty. What is the hours before I can go on duty?
4 hours.
Glad Hands are used to connect the?
Service and emergency air lines from the truck to the trailer.
When coupling, the proper position of the fifth wheel is?
Tilted down towards the end of the tractor.
The best way to tell if your trailer has started to skid is to?
See it in your mirrors.
Your supply air to the trailer tanks by?
Pushing in the trailer air supply valve.
To unlock the fifth wheel, pull the release handle to the ____ position?
Open
The trailer air supply control (or tractor protection valve control) should automatically close when the air pressure falls to between ____ psi?
20 and 45
When should you use the hand valve to park a combination vehicle?
Never
A driver crosses the air lines when hooking up to an old trailler with no spring brakes. What will happen?
*** ? The driver could drive away with no trailer brakes
The front trailer supports are up and the trailer is resting on the tractor. Make sure?
*** ? There is enough clearance between the tractor frame and landing gear.
Why should you be sure that the fifth wheel plate is greased as required?
To prevent steering problems.
Which part of the kingpin should the locking jaws close around?
The Shank
If the spring brakes don't release when you push the trailer air supply control, you should?
Check the air line connections.
After you connect the air lines, but before you back under the trailer, you should?
Supply air to the trailer system, then pull out the air supply knob.
For a coupling to be complete, the safety catch for the fifth wheel locking lever must be?
Over the locking lever.
A trailer is most likely to jackknife when it is?
Empty.
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ____ brake system?
Service
Under normal conditions, to engage the parking brakes the driver must first?
Let the air out of the air brake system.
Before driving a truck or bus with dual air brake systems, the pressure in each system should be at least ____ PSI?
100
The parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like?
Spring Pressure
The driver must be able to see a warning before air pressure in the service air tanks falls below ___ psi?
60 psi.

Book says 55 to 75 psi
The air brake system for a straight truck or bus should not leak at a rate of more than ____ psi per minute with the engine off and the brakes released?
2 psi per minute
The proper method of braking when going down long and/or steep grades, after selecting the proper gear, is to brake until your speed is about ____ miles per hour below your "safe" speed, then release your brakes?
5
To check the free play of manual slack adjusters on S-cam brakes you should park on level ground and?
Chock the wheels and turn off the parking brakes.
Some air brake systems have an alchohol evaporator. What may happen if you don't keep the unit filled with alcholol?
Ice may form in the air storage tanks and cause the brakes to fail.
How should you check that your service brakes are working properly?
Wait for normal air pressure, release the parking brake, move the truck forward slowly, and apply the brake pedal firmly.
If your truck or bus has dual parking control valves, you can use pressure from separate tank to?
Release spring emergency/parking brakes to move a short distance.
The brake pedal in an air brake system?
Controls the air pressure applied to put on the brakes.
Total stopping distance for vehicles with air brakes is longer than that for vehicles with hydraulic brakes due to ____ distance?
Brake lag.
If you must make an emergency stop, you should brake so you?
Can steer and your vehicle stays in a straight line.
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?
Stop and safely park. Continue only after the system is fixed.
What is emergency stab braking?
Brake as hard as you can, release the brakes when the wheels lock, and reapply the brakes again when the wheels start rolling.
The air compressor govenor controls?
WHen air is pumped into the air tanks.
Which of these is not a proper time to apply the parking brakes?
When you come down a steep grade and your brakes are very hot!
Excessive use of the service brakes results in overheating, which can lead to?
Expansion of the brake drums!
If air pressure does not build up to normal within the correct amount of time?
Your air pressure may drop too low during driving.
You are driving in heavy traffic at 35 mph. The speed limit is 55 mph. The safest speed for your vehicle is?
35 mph
Which of these statements is correct about emergency or evasive action?
To turn quickly, you must have a firm grip on the steering wheel.
Truck escape ramps?
Help avoid damage to vehicles.
If you need to leave the road in a traffic emergency, you should?
Avoid braking until your speed has dropped to about 20 mph.
Which statement is true?
Many heavy vehicle accidents occur between midnight and 6 Am
How does vehicle weight affect stopping distance?
Empty trucks can take longer to stop than loaded trucks.
You are driving a long vehicle that makes wide turns. You want to turn left from one street into another. Both are two-lane, two-way streets. You should?
Begin turning your vehicle when halfway through the intersection.
Which of these systems should receive extra attention during a winter weather inspection?
Exhaust
When hydraulic brakes fail, the system won't build up pressure and the brake pedal will feel spongy or go to the floor. What action should you take?
Pump the brake pedal to generate pressure.
Where must you keep shipping papers when transporting hazardous materials?
In a pouch on the driver's door or on the seat.
When driving through roadway work zones, you should?
Watch for sharp pavement drop-offs.
Which of these statements is true about rear drive wheel braking skids?
Trailers can push the towing vehicle sideways.
You are driving on a straight, level highway at 50 mph with no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first?
Stay off the brake until the vehicle has slowed down.
When you are passing another vehicle, pedestrian, or bicyclist you should assume that they?
May move into your traffic lane.
How far should a driver look ahead of the vehicle while driving?
12-15 seconds.
Which of these items is not checked in a pre-trip inspection?
Fuel level
Which of these statements is true about brakes?
Brakes absorb more heat to stop heavier or faster-moving vehicles.
Which of these statements is true about cargo types?
Unstable loads (ie hanging meat, livestock) require extra caution on curves.
Which of these statements is not true about backing a heavy vehicle?
You should back slowly until you slightly bump into the dock.
You are driving a heavy vehicle with a manual transmission. You have to stop the vehicle on the shoulder while driving on an uphill grade. WHich of these is a good rule to follow when putting the vehicle back in motion?
Use the parking brake to hold the vehicle until the clutch engages.
Which of these is usually true about driving in tunnels?
There may be strong winds when exiting.
Merging onto a road is safest if you?
Wait for a large enough gap in traffic to enter the road.
Which of these statements is true about bad weather driving conditions.
When the temperature drops, bridges will freeze before roads.
Which of these statements is true regarding the use of drugs while driving?
Prescription drugs are allowed if a doctor says the drugs will not affect safe driving ability.
What should you do when your vehicle hydroplanes.
Release the accelerator.
Which of these statements is true about warning other drivers of stopped vehicle?
Move the rear reflective triangle back if the driver's vision is obscured within 500 feet.
After starting the engine, the?
Coolant temperature guage should begin a gradual rise to normal.
What three things add up to the total stopping distance for your truck or bus?
Perception distance, Reaction distance, braking distance.
When the roads are slippery, you should?
Make turns as carefully as possible.
WHich of these is true about a vehicle's overhead clearance?
Cargo weight can change your vehicle's height
Which of these is not a good rule to follow when caring for an injured person at an accident scene?
Keep injured persons cool
The total weight of the power unit, the trailer, and the cargo is called?
The Gross Combination Weight
Which of these statements is true about speed management?
On slippery roads, it takes longer to stop and is harder to turn without skidding.
Take extra care to keep your vehicle centered in your lane because commercial vehicles?
Are often wider than other vehicles.
Controlled braking?
Is used to keep a vehicle in a straight line when braking.
Which of these statements is true about double-clutching and shifting?
You can use the tachometer to tell you when to shift.
According to the commercial driver handbook, why should you limit the use of your horn?
It can startle other drivers!
Which of these is especially true about your tires in hot weather?
You should check tire mounting and air pressure before driving.
The purpose of retarders is to?
Help slow the vehicle while driving and reduce brake wear.
Which of these statements is true about causes of vehicle fires?
Poor trailer ventilation can cause flammable cargo to catch on fire.
You are driving a 40 foot vehicle at 35 mph. The road is dry and visiblity is good. What is the least amount of space that you should keep in front of your vehicle to be safe?
4 Seconds.
Which of these lights cannot be checked at the same time?
Turn signals, brake lights, and four-way flashers.
You should use your mirrors to check?
Where the rear of your vehicle is when you make turns.
If you're not sure how to put out a hazardous materials fire, you should?
Wait for a qualified fire fighters.
To determine a person's blood alcohol concentration, you must know how?
Much the person weights
When should you use chocks to park a trailer not equipped with spring brakes?
Always
You have uncoupled a trailer and you want to inspect the landing gear. The tractor should be position?
With the tractor frame under the trailer
Under good driving conditions, you should leave at least one second of space between your vehicle and the vehicle ahead for every ____ feet of your vehicle's length?
10
After you supply air to the trailer, make sure the air lines are not crossed and the trailer brakes are working. You do this by?
Applying/releasing the trailer brakes and listening for brake sounds.
You want to inspect the trailer supports. You should place the tractor transmission in which gear after you have uncoiupled the trailer?
Neutral
In general, the higher your truck's "center of gravity," the:
Easier it is to turn over.
You are coupling a tractor to a semitrailer. You have backed up but are not under it. What should you hook up before backing under the semitrailer?
Emergency and service air lines.
You should not back a tractor under a trailer until the whole air system is?
At normal pressure
Which of these statements is true?
Light vehicles need more braking power to stop than heavy ones.
You are driving a combination vehicle. The trailer breaks away and pulls apart both air lines. YOu would expect the trailer brakes to come on and the?
tractor protection valve to close
When you are uncoupling a loaded trailer, lower the landing gear until it?
Makes contact with the ground and lifts the trailer off the fifth wheel.
You are coupling a semitrailer to your tractor but have not yet backed under it. The trailer is at the right height when?
It will be raised slightly when the tractor is backed under it.
A tractor with a(n) _____ trailer requires the shortest stopping distance?
Fully loaded.
When checking the trailer's emergency brakes, the tractor protection control valve should be placed in the ____ position.
Emergency
You are driving a combination vehicle. If the service air line comes apart but the emergency line stays together, what will happen right away?
Nothing is likely to happen until you try to apply the brakes.
In air brake vehicles, the parking brakes should be used?
Any time the vehicle is parked.
THe most common type of foundation brake found on heavy vheicles is the?
S-cam drum
Repeatedly pressing and releasing (fanning) the brake pedal may result in?
The loss of brake air pressure
If the spring brakes are on, when should you push the brake pedal?
Never
How should you check that the trailer brakes come on when air pressure in the system drops below a certain level?
Chock the wheels, apply the parking brake, shut the engine off, and pump the brake pedal to reduce air tank pressure.
You should know your brakes are fading when?
You have to push the brake pedal harder to control speed on a downgrade.
The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than?
3 psi in one minute.
The brake pedal in an air brake sytem?
Controls the air pressure applied to put on the brakes.
Truck and bus parking or emergency brakes must be held on by?
Mechanical force
The air brake lag distance at 55 mph on dry pavement adds about _____ feet to your stopping distance.
32
What is emergency controlled braking?
You apply the brakes as hard as you can without locking the wheels.
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks falls below _____ psi?
60
For air brake systems in good condition, the air compressor should start pumping at about ____ psi?
100
If your truck has a dual air system and one of the systems is low on pressure?
Either the front or rear brakes will not be fully operational.
The air compressor governor controls
When air is pumped into the air brakes.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to?
Release spring emergency/parking brakes to move a short distance.
If your truck's air compressor has its own oil supply, when should first check the oil level?
Before driving.
The stop light switch
Turns on the brake lights to warn drivers behind you.
You are on a steep downgrade and ahve reached your "safe" speed of 40 mph. You should apply the service brakes until your speed drops to ____ mph.
35
The braking powr of the spring brakes?
Depends on the service brakes being in adjustment.
When do strong winds affect driving the most?
When exiting tunnels
What is the best advice for drivers to follow when a heavy fog occurs?
Park at a rest area or truck stop until the fog has lifted
Which of these statements is not true?
A drinker can control how fast his or her body absorbs and gets rid of alcohol.
Controlled braking
is used to keep a vehicle in a straight line when braking.
Which of these is not caused by rough acceleration?
Tire Damage
Which of the following may be a sign of tire failure?
Wheels fishtailing
Retarders?
Can cause the drive wheels to skid when they have poor traction.
How many missing or broken leaves in any leaf spring will cause a commercial vehicle to be placed out of service?
one-fourth of the total number.
You should try to park your vehicle so?
You can pull forward when you leave.
Which of these is not a proper use of vehicle lights?
Flashing your brake lights to stop someone tailgating.
Which of these is a good thing to do whn you steer to avoid a crash?
Don't turn the steering wheel any further than needed.
Which of these statements is true about double-clutching and shifting?
You can use the tachomter to tell you when to shift.
Which of the following is not a type of retarder?
Robotic
Optional safety equipment may include emergency phone numbers, tire chains and?
Tire changing equipment.
Which of these statements is not true about engine belts in hot weather?
Cracked is likely to occur but is not a safety threat.
For your safety, when you place your reflective triangles you should?
Hold the triangles with the reflective side between you and oncoming traffic.
Which of these statements is the proper way to signal for a lane change?
Signal early, and change lanes slowly and smoothly.
You wish to turn right from a two-lane, two-way street into another. Your vehicle is so long that you must swing wide to complete the turn. Which of these figures shows how you should make the turn?
Figure B - Don't move to the left when turning. Cut into the other lane so people can't get stuck in that corner trying to pass you thinking you are moving left.
WHat should you do if a car coming toward you at night keeps its high beams on?
Look at the right edge of your lane or right side of the road.
If you do not have a CB radio, what is the first thing you should do at an accident scene?
Protect the area
The distance that you should look ahead of your vehicle while driving is about ____ mile at highway speeds.
1/4
Which of these is a good thing to remember about drinking alcohol?
Alcohol first affects judgement and self-control.
When you must stop on a one-way or divided highway, you should place your reflective triangles at which of the following locations?
10 feet, 100 feet, and 200 feet toward approaching taffic.
You are stopped. You want to start driving uphill. You should?
Partly engage the clutch and then release the parking brake.
You are checking your tires during a pre-trip inspection. Which of these statements is true?
Tires of mismatched sizes should not be used on the same vehicle.
The best drivers are those who watch and prepare for hazards. This is called being.
Defensive
You are checking your brakes and suspension system during a pre-trip inspection. Which of these statements is true?
Brake shoes should not have oil, grease, or brake fluid on them.
THe braking effect of the engine is greatest when the engine is ____ the govened RPMs and the transmission is in the ____ gears.
Near, lower
Whenever you double your speed, it will take about _____ times as much distance to stop.
Four times
Perception distance" is the distance your vehicle travels from the time your:
Eyes see a hazard to the time your brains knows it is a hazard.
WHich of these statements is true about transporting hazardous materials?
Hazardous materials can be a risk to health and safety.
If a straight vehicle (no trailer or articulation) goes into a front-wheel ski, it will.
Travel straight ahead even if you turn the steering wheel.
What is the first thing you should do if your brakes fall while driving downhill?
Get off the road as soon as possible.
How do you correct a rear wheel braking skid when driving on ice or snow?
Stop accelerating.
WHich of these statements is not true about backing a heavy vehicle?
You should back slowly until you slightly bump the dock.
Which of these systems should receive extra attention during a winter weather inspection?
Exhaust
you can see this sign on a vehicle ahead of you. What does the sign mean?
Slow-moving vehicle.

(It's got a triangle bordered by thick lines cut off on the ends.)
Which of the following statements is true?
Many heavy vehicle accidents occur between midnight and 6 am.
What will help keep an engine cool in hot weather?
Making sure the engine has the right amount of oil.
To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 mph on the shoulder. WHow should you move back onto the pavement?
If the should is clear, stay on it until your vehicle comes to a stop. Then move back onto the pavement when it is safe.
How far should a driver look ahead of the vehicle while driving?
12-15 seconds
What should you do before driving in the mountains?
Know the escape ram locations on your route.
Which of these statements is true about shipping hazardous materials?
A four-inch, diamond-shaped, hazardous materials label must be on the container.
The commercial driver handbook suggests several things to do when you pass a vehicle. Which of these is not one of them?
At night, turn on your high beams while you pass the vehicle.
When you drive in the mountains, you will have to use lower gears to drive safely down grades. Which of these does not affect your choice of gears?
Tire tread type.
If you must drive into the oncoming lane to turn, you should?
Allow enough space to get completely across the intersection.
You are drivng a 40 foot vehicle at 35 mph. The road is dry and visibility is good. What is the least amount of space you should keep in front of your vehicle to be safe?
4 seconds.
If you have a heavy load that is slowing you down on an upgrade, you should?
Shift into a lower gear.
One reason that dry bulk tanks require special care is?
The load can shift.
Before you back under a truck trailer, make sure the?
Trailer brakes are locked.
One of the things a driver can do to prevent a rollover is to keep?
The cargo as close to the ground as possible.
If you cannot make a turn without entering another traffic lane, you should?
Turn wide as you complete your turn.
After you lock the kingpin into the fifth wheel, you should check the connection by pulling?
The tractor ahead gently with the trailer brakes locked.
You are uncoupling a trailer. After you shut off the trailer air supply and lock the trailer brakes, you should?
Back up gently to ease pressure on the fifth wheel locking jaws.
To stop a trailer skid you should?
Release the service brakes.`
After the trailer has been coupled to the tractor, the tractor protection control valve should be placed in the ____ position.
Normal
The air leakage rate for comination of two vehicles (engine off, brakes off) should not be greater than ____ psi or less in one minute?
3 psi
Loss of air pressure in the emergency line causes?
The trailer's emergency brakes to come on.
What will happen if the air lines are crossed when you hook up to an old trailer with no spring brakes?
You should drive away with no trailer brakes.
When you get ready to back under a trailer, you should line up?
Directly in front of the trailer.
You have pushed in the trailer supply valve. You should not move the tractor until the whole air system is?
At normal pressure.
To prevent a jackknife in normal driving, some drivers use the hand valve before stepping on the brake pedal. Which of these statements is true?
It should not be done.
You have a major leak in the service line and you put on the brakes. Service air pressure will escape and cause the?
Trailer emergency brakes to come on.
The tractor protection valve will close and the trailer emergency brakes will come on when there is a major leak in the ____ brake line.
Emergency
The use of air brakes on downgrade is only a supplement to the?
Braking effect of the engine.
The air brake lag distance at 55 mph on dry pavement adds about ___ feet to your stopping distance?
32
All air brake equipped vehicles have?
An air supply pressure gauge.
The braking power of the spring brakes?
Depends on the service brakes being in adjustment.
If your truck's air compressor has its own oil supply, when should you first check the oil level?
Before driving
If your vehicle has an alcohol evaporator, it is there to?
Reduce the risk of ice in air brake valves in cold weather.
During normal driving, spring brakes are usually held back by?
Air pressure.
What is emergency stab braking?
Brake hard, release the brakes when the wheels lock, and reapply the brakes when the wheels start rolling.
The most important thing to do when a low air pressure warning comes on is?
Stop and safely park as soon as possible.
If you must make an emergency stop, brake so you?
Can steer your vehicle in a straight line.
The most important thing to do when a low air pressure warning comes on is?
Stop and safely park as soon as possible.
A truck with air brakes going 55 mph would require a stopping distanc eof?
More than 300 feet.
The air compressor should stop pumping at about ____ psi?
125
Your vehicle has a dual air brake system. If a low air pressure warning comes on for the secondary system, you should?
Stop the vehicle and continue only when the system is fixed.
The safety valve is usually set to reduce air pressure at ___ psi?
150
Your truck has a properly functioning dual air brake system and minimum size air tanks. The air pressure should build from 85 to 100 psi within?
45 seconds.
How should you check that your service brakes are working proplerly?
Wait for normal air pressure, release the parking brake, move the truck forward slowly, and firmly step on the brake.
Repeatedly pressing and releasing (fanning) the brake pedal may result in?
A loss of brake air pressure.
The application pressure gauge shows how much air pressure you?
Are applying to the brakes.
When you apply the brakes. The brake shoes/linings are pressed against the?
Brake drum or disc.