Review Questions - Click On The Picture To Begin...
These Questions Are From The Illinois CDL Manual
- On flat bed trailers or trailers without sides, no matter how small the cargo is, it should have at least two tiedowns holding it
- On flat bed trailers or trailers without sides, cargo that weighs more than 10,000 pounds does not require a tie down
- Cargo should have at least one tiedown for each 25 feet of cargo
- The combined strength of all cargo tiedowns must be strong enough to lift three times the weight of the piece of cargo tied down
Quote From Page 53 Of The CDL Manual:
Cargo Tiedown - On flat bed trailers or trailers without sides, cargo must be secured to keep it from shifting and falling off. In closed vans, tiedowns can also be important to prevent cargo shifting that may affect the handling of the vehicle. Tiedowns must be of the proper type and proper strength. The combined strength of all cargo tiedowns must be strong enough to lift one and one-half times the weight of the piece of cargo tied down. Proper tiedown equipment must be used, including ropes, straps, chains, and tensioning devices (winches, ratchets, clinching components). Tiedowns must be attached to the vehicle correctly (hook, bolt, rails, rings).
Cargo should have at least one tiedown for each 10 feet of cargo. Make sure you have enough tiedowns to meet this need. No matter how small the cargo is, it should have at least two tiedowns holding it.
There are special requirements for securing various heavy pieces of metal. Find out what they are if you are to carry such loads.
Quote From Page 74 Of The CDL Manual:
Newer trailers have spring brakes just like trucks and truck tractors. However, converter dollies and trailers built before 1975 are not required to have spring brakes. Those that do not have spring brakes have emergency brakes that work from the air stored in the trailer air tank. The emergency brakes come on whenever air pressure in the emergency line is lost. These trailers have no parking brake. The emergency brakes come on whenever the air supply knob is pulled out or the trailer is disconnected. But the brakes will hold only as long as there is air pressure in the trailer air tank. Eventually, the air will leak away, and then there will be no brakes. Therefore, it is very important for safety that you use wheel chocks when you park trailers without spring brakes.
It is extremely unlikely you will drive a trailer built before 1975, but for the written exam, you still may need to know that trailers built before 1975 were not required to have spring brakes.
- A traffic device that enables vehicles that are having braking problems to safely stop
- Another term for an on-ramp, connecting a side street to a major expressway
- A device used to help climb into or out of a truck trailer
- A ramp to connect an expressway to a side street
Quote From Page 43 Of The CDL Manual:
Brake failure on downgrades: Going slow enough and braking properly will almost always prevent brake failure on long downgrades. Once the brakes have failed, however, look outside your vehicle for something to stop it.
Your best hope is an escape ramp. If there is one, there will be signs posted. Ramps are usually located a few miles from the top of the downgrade. Every year, hundreds of drivers avoid injury to themselves or damage to their vehicles by using escape ramps. Some escape ramps use soft gravel that resists the motion of the vehicle and brings it to a stop. Others turn uphill, using the hill to stop the vehicle and soft gravel to hold it in place.
Any driver who loses brakes going downhill should use an escape ramp if available. If you do not use it, your chances of having a serious accident may be much greater. If no escape ramp is available, take the least hazardous escape route you can, such as an open field or a side road that flattens out or turns uphill. Make the move as soon as you know your brakes do not work. The longer you wait, the faster the vehicle will go and the harder it will be to stop.
- Use proper signals
- Change lanes when it is safe to do so
- All of these answers are true
- Make necessary traffic checks
Quote From Page 129 Of The CDL Manual:
You will be instructed to change lanes:
- Make necessary traffic checks.
- Use proper signals.
- Change lanes smoothly when it is safe to do so.
The examiner will ask you to make a lane change, but you're expected to perform the lane change safely. The examiner will not check for traffic before asking you to make the lane change.
- Place them in direct contact with each other.
- Make sure it is leaning forward.
- Use some kind of blocking to prevent shifting.
- Fill the empty space between with other cargo.
Quote From Page 2 Of The CDL Manual:
For articles of cargo placed beside each other and secured by side-to-side tiedowns:
Either place them in direct contact with each other,
Or prevent them from shifting towards each other in transit by using blocking or filling the space with other cargo.
- To limit the weight-to-length ratio of a vehicle crossing a bridge.
- To regulate the building of bridge structures so they can support the weight of heavy modern trucks
- To prevent over-width trucks from becoming a hazard on narrow bridges
- To prevent the maximum tire load rating from being exceeded by narrow axle spacing
Quote From Page 0 Of The CDL Manual:
- For approximately 30 seconds after re-entering traffic flow
- Before rolling forward to re-enter the traffic flow
- Once you are in the traffic lane and up to highway speeds
- After you have re-entered the traffic lane
Quote From Page 129 Of The CDL Manual:
When instructed to resume:
- Check traffic and mirrors thoroughly in all directions.
- Turn off the four-way flashers.
- Activate the left turn signal.
- When traffic permits, release the parking brake and pull straight ahead.
- Do not turn the wheel before your vehicle moves.
- Check traffic from all directions, especially to the left.
- Steer and accelerate smoothly into the proper lane when safe to do so.
- Once your vehicle is back into the flow of traffic, cancel the left turn signal.
Before you begin moving forward, you should activate the left turn signal so other motorists know you're getting ready to re-enter the traffic lane.
- Knowing cargo is properly secured
- Recognizing overloads and poorly balanced weight
- Inspecting the cargo
- Knowing the exact product count inside the trailer
Quote From Page 52 Of The CDL Manual:
Whether or not you load and secure the cargo yourself, you are responsible for:
- Inspecting your cargo.
- Recognizing overloads and poorly balanced weight.
- Knowing your cargo is properly secured.
- Air pressure acts on a brake chamber and slack adjuster
- Powerful springs are held back by air pressure and if the air pressure is removed, the springs put on the brakes
- The brake chamber push rod pushes a wedge directly between the ends of two brake shoes
- An S-Cam forces the brake shoes away from one another and presses them against the inside of the brake drum
Quote From Page 64 Of The CDL Manual:
Spring Brakes - All trucks, truck tractors and buses must be equipped with emergency brakes and parking brakes. They must be held on by mechanical force because air pressure can eventually leak away. Spring brakes are usually used to meet these needs. When driving, powerful springs are held back by air pressure. If the air pressure is removed, the springs put on the brakes. A parking brake control in the cab allows the driver to let the air out of the spring brakes. This lets the springs put the brakes on. A leak in the air brake system, which causes all the air to be lost, will also cause the springs to put on the brakes.
Tractor and straight truck spring brakes will come on fully when air pressure drops to a range of 20 to 45 psi (typically 20 to 30 psi). Do not wait for the brakes to come on automatically. When the low air-pressure warning light and buzzer first come on, bring the vehicle to a safe stop right away while you can still control the brakes.
The braking power of spring brakes depends on the brakes being in adjustment. If the brakes are not adjusted properly, neither the regular brakes nor the emergency/parking brakes will work right.
Spring brakes control your parking and emergency brakes. It's a fail-safe system where brakes are held off with air pressure. If you lose air pressure, the brakes will no longer be held back and will automatically activate. That is why it's important to pay attention to your air pressure gauges. If your air pressure drops too low, you need to pull over before the emergency brakes (spring brakes) activate.
- Have "HAZMAT" written on the top of the shipping papers
- Be printed on a bright orange sheet of paper
- Use a larger size sheet of paper for the hazmat items
- Be kept on top of other shipping papers
Quote From Page 88 Of The CDL Manual:
- Shippers to describe hazardous materials correctly and include an emergency response telephone number on shipping papers.
- Carriers and drivers to put tabs on hazardous materials shipping papers, or keep them on top of other shipping papers and keep the required emergency response information with the shipping papers.
- Drivers to keep hazardous materials shipping papers:
- In a pouch on the driver's door, or
- In clear view within immediate reach while the seat belt is fastened while driving, or
- On the driver's seat when out of the vehicle.