Review Questions - Click On The Picture To Begin...
These Questions Come From The Illinois CDL Manual
- Less likely to tip over during a turn
- More likely to tip over during a turn
- Less difficult to maneuver when swerving around an obstruction
- More likely to gain traction in a snowstorm
Quote From Page 52 Of The Illinois CDL Manual:
Do Not Be Top-Heavy - The height of the vehicle's center of gravity is very important for safe handling. A high center of gravity (cargo piled up high or heavy cargo on top) means you are more likely to tip over. It is most dangerous in curves or if you have to swerve to avoid a hazard. It is very important to distribute the cargo so it is as low as possible. Put the heaviest parts of the cargo under the lightest parts.
- Missing or broken leaf springs
- Cracked or broken spring hangers
- Leaking shock absorbers
- Bent side rails
Quote From Page 14 Of The Illinois CDL Manual:
The suspension system holds up the vehicle and its load and keeps the axles in place. Therefore, broken suspension parts can be extremely dangerous. Look for the following:
- Spring hangers that allow movement of axle from proper position.
- Cracked or broken spring hangers.
- Missing or broken leaves in any leaf spring. If 1/4 or more are missing, it will put the vehicle "out of service," but any defect can be dangerous.
- Broken leaves in a multi-leaf spring, or leaves that have shifted so they might hit a tire or other part.
- Leaking shock absorbers.
- Torque rod or arm, U-bolts, spring hangers, or other axle positioning parts that are cracked, damaged or missing.
- Air suspension systems that are damaged and/or leaking.
- Any loose, cracked, broken or missing frame members.
- No obstacles should ever block an aisle or doorway which may trip other riders.
- Baggage can only be placed in an aisle if it is tied or secured to a seat
- Baggage may block doors as long as it is moved when the bus is loading or unloading passengers
- Baggage can only be placed in the aisle if the owner of the baggage is available to move it when necessary
Quote From Page 55 Of The Illinois CDL Manual:
Do not allow riders to leave carry-on baggage in a doorway or aisle. There should be nothing in the aisle that might trip other riders. Secure baggage and freight in ways that avoid damage and:
- Allow the driver to move freely and easily.
- Allow riders to exit by any window or door in an emergency.
- Protect riders from injury if carryons fall or shift.
Even if you don't plan on obtaining a CDL passenger endorsement, you will still required to have an understanding of some basic passenger rules and regulations for the written exam.
- When turning, the trailer makes a tighter turning radius than the tractor
- The "crack-the-whip" effect of a trailer when a sudden lane change or quick left or right movement is made
- The momentum generated by the trailer of a vehicle during long or steep downgrades
- Another term for a jackknifing trailer
Quote From Page 70 Of The Illinois CDL Manual:
Rearward Amplification - Trucks with trailers have a dangerous "crack-the-whip" effect. When you make a quick lane change, the crack-the-whip effect can turn the trailer over. There are many accidents where only the trailer has overturned.
- For approximately 30 seconds after re-entering traffic flow
- Once you are in the traffic lane and up to highway speeds
- Before rolling forward to re-enter the traffic flow
- After you have re-entered the traffic lane
Quote From Page 129 Of The Illinois 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.
- At least 7 inches away from any other markings
- All of these are requirements for placards
- Kept clear of attachments or devices such as ladders, doors and tarpaulins
- Placed so the words or numbers are angled from lower left to upper right
Quote From Page 94 Of The Illinois CDL Manual:
Placards must appear on both sides and ends of the vehicle. Each placard must be:
- Easily seen from the direction it faces.
- Placed so the words or numbers are level and read from left to right.
- At least 3 inches away from any other markings.
- Kept clear of attachments or devices such as ladders, doors and tarpaulins.
- Kept clean and undamaged so that the color, format and message are easily seen.
- None of these are correct
- Downshift once the RPM's become too high for the current gear
- Downshift about half way down the hill
- Downshift before starting down the hill
Quote From Page 25 Of The Illinois CDL Manual:
Slow down and shift down to a speed that you can control without using the brakes hard. Otherwise the brakes can overheat and lose their braking power. Downshift before starting down the hill. Make sure you are in a low enough gear, usually lower than the gear required to climb the same hill.
- On a separate page placed behind the shipping paper
- The original shipping paper
- On the emergency response information sheet
- On a separate page placed before the shipping paper
Quote From Page 93 Of The Illinois CDL Manual:
Shipper's Certification When the shipper packages hazardous materials, he/she certifies that the package has been prepared according to the rules. The signed shipper's certification appears on the original shipping paper. The only exceptions are when a shipper is a private carrier transporting their own product, and when the package is provided by the carrier (e.g., a cargo tank). Unless a package is clearly unsafe or does not comply with the HMR, you may accept the shipper's certification concerning proper packaging. Some carriers have additional rules about transporting hazardous products. Follow your employer's rules when accepting shipments.
Shippers print required markings directly on the package, an attached label or tag. An important package marking is the name of the hazardous material. It is the same name as the one on the shipping paper. When required, the shipper will put the following on the package:
- Name and address of shipper or consignee.
- Hazardous material's shipping name and ID number.
- Required labels.
- ID number on bulk packages.
- When the line loses air pressure, it causes the tractor protection valve to close
- It controls the emergency brakes on combination vehicles
- It supplies air to the trailer air tanks
- It carries air controlled by the foot brake or trailer hand brake
Quote From Page 73 Of The Illinois CDL Manual:
The emergency line (also called the supply line) has two purposes:
- (1) To supply air to the trailer air tanks
- (2) to control the emergency brakes on combination vehicles.
Loss of air pressure in the emergency line causes the trailer emergency brakes to come on. The pressure loss could be caused by a trailer breaking loose, thus tearing apart the emergency air hose. Or it could be caused by a hose, metal tubing or other part that breaks, letting the air out. When the emergency line loses pressure, it also causes the tractor protection valve to close (the air supply knob will pop out).
- Looking for any leaking or under-inflated air bags
- Ensuring tandem locking pins are in place
- Making sure tires are not under-inflated
- Checking all air hoses for leaks
Quote From Page 46 Of The Illinois CDL Manual:
Truck fires can cause damage and injury. Learn the causes of fires and how to prevent them. Know what to do to extinguish fires. Following are some causes of vehicle fires:
- After accidents - Spilled fuel, improper use of flares.
- Tires - Underinflated tires and duals that touch.
- Electrical system - Short circuits due to damaged insulation, loose connections.
- Fuel - Driver smoking, improper fueling, loose fuel connections.
- Cargo - Flammable cargo, improperly sealed or loaded, poor ventilation.
Pay attention to the following:
- Pre-trip inspection - Make a complete inspection of the electrical, fuel and exhaust systems, tires and cargo. Be sure to check that the fire extinguisher is charged.
- Enroute inspection - Check the tires, wheels and truck body for signs of heat whenever you stop during a trip.
- Follow safety procedures - Follow correct safety procedures for fueling the vehicle, using brakes, handling flares and other activities that can cause a fire.
- Monitoring - Check the instruments and gauges often for signs of overheating, and use the mirrors to look for signs of smoke from tires or the vehicle.
In very hot weather, an under inflated tire can easily reach high enough temperatures to start a fire. Tire fires are almost impossible to put out even with a fire extinguisher or plenty of water so it's best to avoid a tire fire from occurring in the first place. It's critically important that you keep your tires properly inflated, especially during very hot weather.