Review Questions - Click On The Picture To Begin...
These Questions Are From The Illinois CDL Manual
- Water
- Fire blanket
- Fire extinguisher
- Never try to put out a burning tire
Quote From Page 37 Of The CDL Manual:
A burning tire should be cooled with water.
drive axles: 34,100 pounds
Weight transfer: 500 pounds per hole
- steer axle: 11,800 pounds
drive axles: 33,100 pounds - steer axle: 11,300 pounds
drive axles: 33,600 pounds - steer axle: 9,800 pounds
drive axles: 35,100 pounds - steer axle: 10,300 pounds
drive axles: 34,600 pounds
Quote From Page 0 Of The CDL Manual:
TruckingTruth's Advice:
2 holes x 500 pounds per hole = 1000 pounds of weight transfer from the drive axles to the steer axle.
10,800 + 1000 = 11,800 pounds on the steer axle after transfer
34,100 - 1000 = 33,100 pounds on the drive axles after transfer
- Pallet.
- Hook-lift container.
- Intermodal container.
- Container chassis vehicle.
Quote From Page 2 Of The CDL Manual:
Intermodal Container:
A reusable, transportable enclosure that is especially designed with integral locking devices that secure it to a container chassis trailer to facilitate the efficient and bulk shipping and transfer of goods by, or between various modes of transport, such as highway, rail, sea, and air.
- Friction mats alone.
- Tiedowns.
- All of these are required.
- Banding them together.
Quote From Page 6 Of The CDL Manual:
Situation #4
- A paper roll or the forwardmost roll(s) in a group of paper rolls is not prevented from tipping or falling forward by vehicle structure or other cargo.
- Paper roll width is more than 1.25 times and less than 1.76 times its diameter.
- Only friction mats are used for forward securement.
Solution #4:
The friction mat alone is adequate. The friction mat allows the roll to slide on the floor without tripping the roll.
- The position of the heaviest trailer is not important as long as the brakes are working properly
- The heaviest trailer should be in first position behind the tractor
- If there are three trailers, the heaviest should be in the middle
- The heaviest trailer should be the very last trailer
Quote From Page 80 Of The CDL Manual:
For the safest handling on the road, the more heavily loaded semi-trailer should be in first position behind the tractor. The lighter trailer should be in the rear.
- Apply the brakes as hard as you can without locking the wheels
- Control the pressure so the vehicle comes to a smooth, safe stop
- Applying and releasing the emergency brake until you're able to come to a complete stop
- Apply the service brake all the way, release the brakes when the wheels lock up, then apply the brake again repeating the process as many times as necessary
Quote From Page 67 Of The CDL Manual:
Stab braking: Use only on vehicles without anti-lock systems.
- Apply the brake all the way.
- Release the brakes when the wheels lock up.
- As soon as the wheels start rolling, put on the brakes fully again. (It can take up to 1 second for the wheels to start rolling after you release the brakes. If you reapply the brakes before the wheels start rolling, the vehicle will not straighten out.)
TruckingTruth's Advice:
It will be important for you to understand the difference in the following terms (make sure you memorize the meaning of each):
- Normal Stops: To apply the air brakes during normal stops, push the brake pedal down. Control the pressure so the vehicle comes to a smooth, safe stop. If you have a manual transmission, do not push the clutch in until the engine RPM is down close to idle. When stopped, select a starting gear.
- Emergency Stops: If somebody suddenly pulls out in front of you, your natural response is to hit the brakes. This is a good response if there is enough distance to stop and you use the brakes correctly.
- Controlled Braking: With this method, you apply the brakes as hard as you can without locking the wheels. Keep steering wheel movements very small while doing this. If you need to make larger steering adjustments or if the wheels lock, release the brakes. Reapply the brakes as soon as you can.
Stab Braking Use only on vehicles without anti-lock systems.
- Apply the brake all the way.
- Release the brakes when the wheels lock up.
- As soon as teh wheels start rolling, put on the brakes fully again. (It can take up to 1 second for the wheels to start rolling after you release the brakes. If you reapply the brakes before the wheels start rolling, the vehicle will not straighten out.)
- They allow air to be released when the air pressure builds too high
- They allow oil to be inserted into the air tanks
- They are used to transfer air from the air tank to the brake chambers
- They allow water to be released from the air tanks
Quote From Page 62 Of The CDL Manual:
Air Tank Drains - Compressed air usually has some water and compressor oil in it, which is bad for the air brake system. For example, the water can freeze in cold weather and cause brake failure. The water and oil tend to collect in the bottom of the air tank. Be sure to drain the air tanks completely. Each air tank is equipped with a drain valve in the bottom. There are two types of drain valves:
- 1. Manually operated by turning a quarter turn or by pulling a cable. You must drain the tanks yourself at the end of each day of driving.
- 2. Automatic, in which the water and oil are automatically expelled. They may be equipped for manual draining as well.
The automatic types are available with electric heating devices. These help prevent freeze-up of the automatic drain in cold weather.
- Fifth Wheel
- Air Lines
- Fuel Tank
- Drive Shaft
Quote From Page 119 Of The CDL Manual:
Drive shaft:
- See that drive shaft is not bent or cracked.
- Couplings should be secure and free of foreign objects.
TruckingTruth's Advice:
When inspecting the drive shaft, tell the examiner:
"The drive shaft should not be twisted, cracked, bent or broken. U-joints must appear secure and free of foreign objects."
- 800 pounds of fuel
- 850 pounds of fuel
- 600 pounds of fuel
- 480 pounds of fuel
Quote From Page 0 Of The CDL Manual:
Number of miles travelled / miles per gallon = gallons of fuel burned off
TruckingTruth's Advice:
100 gallons x 8 pounds per gallon = 800 pounds of fuel burned off
- Supplies air to the trailer air tanks
- Controls the parking brakes
- Carries air controlled by the foot brake or the trailer hand brake
- Controls the emergency brakes
Quote From Page 73 Of The CDL Manual:
The service line (also called the "control line" or "signal line") carries air controlled by the foot brake or the trailer hand brake. Depending on how hard you press the foot brake or hand valve, the pressure in the service line will similarly change. The service line is connected to relay valves. These valves allow the trailer brakes to be applied more quickly than would otherwise be possible.