Create an account
When transporting cargo, inspect the materials and securing devices?
Before the trip, within 25 miles after beginning the trip, after every 3 hours or 150 miles, and during every driving break.
In the event of an engine fire?
Try to keep the hood closed and shoot extingishers through louvers or from the underside of the vehicle.
Shippers must write the name of the hazard class of hazardous products?
On the shipping papers and on the diamond-shaped labels or special tags on the container.
Why is it important to check and cover your cargo?
1) You need to protect people from spilled cargo.
2) You should look at your cargo in the mirrors often while driving.
3) You need to protect the cargo from the weather.
Which of the following contains more alcohol? 1. A 12 ounce mug of 5% beer, 2. A 5 ounce glass of 12% wine or 3. A 1 1/2 ounce shot of 80 proof liquor?
All three contain the same amount of alcohol.
What is the total stopping distance when driving a heavy vehicle on dry pavement at 55 MPH?
Why don't new trucks use the same gear for going down a hill as they would for going up a hill?
They have low friction parts.
You are driving on a highway and your front tire has just blown out. You should?
Stay off the brake until you have slowed down.
How do you start your vehicle on an uphill grade?
Use the parking brake to keep the vehicle from rolling backwards and then engage the clutch.
1. Occurs when water or slush forms a film between the tires and the road.
2. Can Occur at any speed.
3. Is more likely to occur when tire pressure is low.
What is the meaning of the red triangles with an orange center on the back of a vehicle?
The vehicle is slow moving.
If your hydraulic brakes go out, what should you do?
1. Try pumping the brakes to generate pressure.
3. Use the parking brake
Which of the following is true about double-clutching and shifting?
Use your tachometer and road speed to tell you when to shift.
Use the B:C fire extinguishers on:
1. Cloth fires
2. Wood and Paper fires
3. Burning liquids and Electrical fires
Use the A:B:C fire extinguisher on:
1.Burning liquids and Electrical fires
3.Wood and Paper fires
What three kinds of emergency equipment must you have?
1. 3 Red Reflective Triangles
2. Spare Electrical Fuses
3. Properly Charged and Rated Fire Extinguisher
"Optional" emergency equipment would consist of?
2. Tire changing equipment
3. List of emergency phone numbers
4. Accident reporting kit
5. Perform Brake checks during the in-cab inspection
What should wheel bearing seals be checked for?
1. Missing Spacers, Studs, Lugs, and Clamps
2. Damaged or Mismatched Lock Rings
3. Welding on rims (Note as a defect)
4. Rust and loose nuts
5. Out-of-round stud or bolt holes on rims indicate problems.
6. Check the hub oil supply- no leakage
What is your most important way to see the sides and rear of your vehicle?
Regular Checks, check your mirrors to be aware of traffic about every 7-15 seconds.
What three things add up to total stopping distance?
Percption Distance plus Reaction Distance plus Braking Distance = Total Stopping Distance
Perception Distance is?
The distance your vehicle travels from the time your eyes see a hazard until your brain Recognizes it.
Reaction Distance is?
The distance traveled from the time your brain tells your foot to move from the accelerator until your foot is actually pushing the brake pedal.
What is (GCWR)?
Any combination of vehicles with a Gross Combination Weight Rating of 26,001 pounds(GCWR) or more provided the Gross Vehicle Weight Rating (GVWR) of the vehicles being "towed" is in excess of 10,000 pounds.
What are "RETARDERS" used for?
They help slow a vehicle, reducing the need for using your brakes, they also reduce brake wear and give you anothor way to slow down.
What are 4 basic types of Retarders?
All Retarders can be turned on or off by the driver.
Aggresive driving is when?
The operator is operating their vehicle in a selfish, bold, or pushy manner, without regard for the rights or safety of others.
What is operating a motor vehicle with the intent of doing harm to others or physically assaulting a driver or their vehicle?
What can cause you to lose your CDL for at least One Year for a "FIRST OFFENSE"
1. Driving a CMV if your blood alcohol concentration is .04% or higher.
2. Driving a CMV under the influence of "Alcohol"
3. Refusing to undergo blood alcohol testing
4. Driving a CMV while under the influence of a controlled substance.
5. Leaving the scene of an accident involving a CMV
6. Committing a felony involving the use of a CMV.
When parked on the side of the road remember to?
Turn on your four-way emergency flashers, as caution do not trust your "Tail Lights" to give warning.
What can cause your Brakes to apply unevenly,not grab properly and make them weak?
Driving in Heavy Rain or Deep Standing Water.
"Water in the Brakes"
During a Pre-Trip inspection, check your brakes and suspension system for:
1. Brake shoes and pads with fluid in them.
2. Shoes worn thinner than 1/4 inch
3. Cracked, missing, or broken parts.
In a Pre-Trip inspection what should your tires look like?
Tires should not be mismatched in "Size" and "Ply", nor worn or damaged.
Front tires: 4/32 Others tires: 2/32
What is Top Heavy?
A high center of gravity means you are more likely to tip over, cargo piled up high or Heavy cargo on top.
What is the ratio for a tie-down on a cargo?
A cargo should have at least ONE tie down for each TEN feet of cargo.
You are stopped on the shoulder of a curve that prevents approaching traffic from seeing your vehicle. How far back should you place your last warning device?
The proper distance to use high beams is at least what feet away from an approaching vehicle?
What is the correct placement of warning devices when parked on the shoulder of a one-way or divided highway?
At 10 feet, 100 feet, and 200 feet from the rear of the vehicle
At speeds below 40 mph, you need at least how many seconds for how many feet of vehicle length?
One Second for 10 feet.
You are driving a 60-foot rig at 55 mph. How many seconds of space should you have between you and the vehicle ahead?
If you are on the right shoulder going 55 miles per hour, what is the safest way to get onto the road?
Stay on the shoulder if it is clear and come to a stop, then return to the road when it's safe.
On a long downhill grade, it is recommended that you:
Gear down and keep your speed 5 mph below the "safe speed"
The service brake system:
Applies and releases the brakes when you apply and release pressure on the service brake.
When air pressure in the tanks falls below a certain level, the cut in:
Turns on the air compressor.
True or False. Disc Brakes are the most widely used brakes on commercial vehicles today.
False, The S-cam brakes are the most common.
The low air pressure warning light must come on before the air pressure in the tanks falls below what psi level?
The braking power of spring brakes depends on?
1. Proper adjustment
2. How far the modulating control lever(if present) is moved
You have a fully-charged air system (125 psi). After turning off the engine and releasing the service brake what are the maximum leakage rates per minute for both single and combination vehicles?
2 psi for single, 3 psi for combination
In checking that the spring brakes come on automatically you should not?
Pull the parking brake control knob.
When should you not use the parking brakes?
1. If the brakes are very hot
2. If the brakes are wet during freezing weather
3. When testing the spring brakes
Before driving a vehicle with a dual air system, allow time for the air compressor to build up to 100 psi pressure in which of the following?
Both the primary and secodary systems
On trailer air lines, the service line is connected to "what" on the trailer(s) to apply more or less pressure to the trailer brakes?
On trailer air lines, the service line is connected to RELAY VALVES on the trailers to apply more or less pressure to the trailer brakes.
Fully loaded rigs are how many" " times more likely to rollover in a crash than empty rigs?
Fully loaded rigs are 10 times more likely to rollover in a crash than empty rigs.
What should you keep lubricated to keep from having "steering" problems because of friction between tractor and trailer?
FIFTH WHEEL PLATE
Failure to keep the Fifth Wheel Plate lubricated could cause steering problems because of friction between tractor and trailer.
What will happen if the service and emergency air lines are crossed when hooking up an old trailer, what will happen?
You will be able to drive away, but you won't have trailer brakes.
What should you do when lowering the landing gear of a loaded trailer?
Turn the crank in low gear a few extra turns after the landing gear makes firm contact with ground.
The standard following distance behind other vehicles is?
At least one second for each ten feet of vehicle length plus another second if going over 40 mph.
You need how " " times more stopping disatance when stopping a combination at 40 miles per hour than at 20 miles per hour?
You need 4 times more stopping distance when stopping a combination at 40 miles per hour than at 20 miles per hour.
Why do you need a tractor protection valve?
It keeps air in the tractor if the trailer breaks away or develops a bad leak.
When the fifth wheel locking lever is almost in the locking position but will not lock, what should you do?
Have it repaired before driving.
To make sure the kingpin and fifth wheel connection are secure, what should you do?
Slowly drive forward with the trailer brakes locked
When testing the trailer emergency brakes, you should charge the air brakes system, check that the trailer rolls freely and?
Pull out the trailer air supply control.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together