Review Questions - Click On The Picture To Begin...
These Questions Are From The Illinois CDL Manual
- On the driver's seat
- In the front glove box
- On the dashboard
- Taped to the steering wheel
Quote From Page 102 Of The CDL Manual:
Do not accept a hazardous materials shipment without a properly prepared shipping paper. A shipping paper for hazardous material must always be easily recognized. Other people must be able to find it quickly after an accident.
- Clearly distinguish hazardous material shipping papers from others by tabbing them or keeping them on top of the stack of papers.
- When you are behind the wheel, keep shipping papers within your reach (with your seat belt on) or in a pouch on the driver's door. They must be easily seen by someone entering the cab.
- When not behind the wheel, leave shipping papers in the driver's door pouch or on the driver's seat.
- Emergency response information must be kept in the same location as the shipping paper.
It's good practice to keep hazardous materials shipping papers in the drivers side door pocket. This area is acceptable not only while driving, but also while parked.
- All of these should be checked during a pre-trip
- Each handhold and railing
- Emergency exit handles
- Floor covering
Quote From Page 55 Of The CDL Manual:
Bus Interior: People sometimes damage unattended buses. Always check the interior of the bus before driving to ensure rider safety. Aisles and stairwells must always be clear. The following parts of your bus must be in safe working condition:
- Each handhold and railing.
- Floor covering.
- Signaling devices, including the restroom emergency buzzer, if the bus has a restroom.
- Emergency exit handles.
Even if you don't plan to obtain a passenger endorsement for your CDL, you will still be required to have a basic understanding of some general rules and regulations for transporting passengers.
- Drive to the nearest truck stop, pull into a service bay, find the source of the leak
- Park it, secure the area, and stay there
- Drive to a remote location, contain the spill, locate the leak
- Park over a drain, stop the leak, clean the spill
Quote From Page 103 Of The CDL Manual:
Never continue driving with hazardous material leaking from your vehicle to find a phone booth, truck stop, help or other reason. Remember that the carrier pays for the cleanup of contaminated parking lots, roadways and drainage ditches. The costs are enormous, so do not leave a lengthy trail of contamination. If hazardous materials are spilling from your vehicle:
- Park it.
- Secure the area.
- Stay there.
- 8,001 lbs
- 7,999 lbs
- 5,000 lbs
- 10,000 lbs
Quote From Page 7 Of The CDL Manual:
General tiedown requirements
The aggregate working load limit of all tiedowns on any group of pipe must be more than half the total weight of all pipes in the group.
- Single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds
- Single vehicle with a GVWR of less than 16,001 pounds
- Single vehicle with a GVWR of at least 16,001 pounds but less than 26,001 pounds
- Combination vehicles with a GCWR of 26,001 or more pounds providing the GVWR of the vehicle being towed is in excess of 10,000 pounds
Quote From Page 4 Of The CDL Manual:
- Class A Combination vehicles GCWR* of 26,001 or more pounds providing the GVWR of the vehicle being towed is in excess of 10,000 pounds.
- Class B Single vehicle with a GVWR* of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
- Class C Single vehicle with a GVWR* of at least 16,001 pounds but less than 26,001 pounds.
- Class D Single vehicle with a GVWR* of less than 16,001 pounds.
*GCWR Gross Combination Weight Rating
*GVWR Gross Vehicle Weight Rating
- No more than 6 psi in 1 minute
- No more than 4 psi in 1 minute
- No more than 3 psi in 1 minute
- No more than 5 psi in 1 minute
Quote From Page 66 Of The CDL Manual:
Test air leakage rate: With a fully-charged air system (typically 125 psi), turn off the engine, release the service brake, and time the air pressure drop. The loss rate should be less than 2 psi in 1 minute for single vehicles and less than 3 psi in 1 minute for combination vehicles. Then apply 90 psi or more with the brake pedal. After the initial pressure drop, if the air pressure falls more than 3 psi in 1 minute for single vehicles and more than 4 psi for combination vehicles, the air loss rate is too much. Check for air leaks, and repair before driving the vehicle. Otherwise, you could lose your brakes while driving.
You really need to memorize the allowable air leakage rates. This will very likely come up on your written exam and will come up again during the pre-trip exam. Here's what you should memorize (create flash cards if you have to).
With the service brakes released (not depressing the brake pedal):
- Air loss rate should be less than 2 psi in 1 minute for a single vehicle.
- Air loss rate should be less than 3 psi in 1 minute for combination vehicles (vehicles with a trailer).
With the service brakes depressed (pressing the brake pedal):
- Air loss rate should be less than 3 psi in 1 minute for a single vehicle.
- Air loss rate should be less than 4 psi in 1 minute for combination vehicles (vehicles with a trailer).
Be sure to have that memorized. Very important!!
- A vertical barrier across a vehicle to prevent forward movement of cargo.
- A structure, device, or another substantial article placed against an article to prevent it from tipping that may also prevent it from shifting.
- A tapered piece of material, thick at one end and thin at the other, used to help keep cargo from moving.
- A short piece of material, usually wood, nailed to the deck to reinforce blocking.
Quote From Page 2 Of The CDL Manual:
A tapered piece of material, thick at one end and thin at the other, used to help keep cargo from moving.
- A steering wheel feeling "heavy" indicates a possible tire problem
- These area all indications of tire failure
- A loud "bang" can indicate a tire blowout
- Heavy vibration or thumping indicates a tire may have gone flat
Quote From Page 43 Of The CDL Manual:
Quickly knowing you have a tire failure will let you have more time to react. Having just a few seconds to remember what it is you are supposed to do can help you. The major signs of tire failure are:
- Sound - The loud "bang" of a blowout is an easily recognized sign. Because it can take a few seconds for your vehicle to react, you might think it was another vehicle. But any time you hear a tire blow, you are safest to assume it is yours.
- Vibration - If the vehicle thumps or vibrates heavily, it may be a sign that one of the tires has gone flat. With a rear tire, that may be the only sign you get.
- Feel - If the steering feels "heavy," it is probably a sign that one of the front tires has failed. Sometimes, failure of a rear tire will cause the vehicle to slide back and forth or "fishtail." However, dual rear tires usually prevent this.
As a professional driver, it is almost guaranteed that you will experience a tire issue during your career. Be sure to recognize the signs of tire blowouts and what it feels like when a tire goes flat. This can be challenging when driving a large vehicle, but driving on a flat tire can cause rim damage and create roadway damage and debris. Check your tires every time you stop.
- A system which does not have spring brakes and instead, uses a second S-Cam system for its emergency brakes
- A fail safe system where when one air brake system fails below 60 psi, the second system will keep the emergency brakes from activating
- A single air brake system that uses two sets of brake controls
- Two separate air brake systems that use a single set of brake controls
Quote From Page 65 Of The CDL Manual:
Most newer heavy-duty vehicles use dual air brake systems for safety. A dual air brake system has two separate air brake systems that use a single set of brake controls. Each system has its own air tanks, hoses, lines, etc. One system typically operates the regular brakes on the rear axle or axles. The other system operates the regular brakes on the front axle and possibly one rear axle. Both systems supply air to the trailer if there is one. The first system is called the "primary" system. The other is called the "secondary" system.
- Empty trucks require greater stopping distances, because an empty vehicle has less traction
- The heavier the vehicle, the more work the brakes must do to stop it and the more heat they absorb
- The brakes, tires, springs and shock absorbers on heavy vehicles are designed to work best when the vehicle is fully loaded.
- A heavily loaded truck will take longer to stop than an empty truck.
Quote From Page 29 Of The CDL Manual:
The heavier the vehicle, the more work the brakes must do to stop it and the more heat they absorb. But the brakes, tires, springs and shock absorbers on heavy vehicles are designed to work best when the vehicle is fully loaded. Empty trucks require greater stopping distances, because an empty vehicle has less traction. It can bounce and lock up its wheels, giving much poorer braking. (This is not usually the case with buses.)
This type of question is frequently asked on written exams. Understand that truck braking systems are designed for when the truck is fully loaded. An empty or very light truck will actually take longer to stop than a fully loaded and heavy truck.