Review Questions - Click On The Picture To Begin...
These Questions Are From The Illinois CDL Manual
- 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
- On flat bed trailers or trailers without sides, cargo that weighs more than 10,000 pounds does not require a tie down
- On flat bed trailers or trailers without sides, no matter how small the cargo is, it should have at least two tiedowns holding it
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.
- When the trailer is fully loaded to maximum weight
- When the trailer is empty
- When the trailer is loaded to half of its maximum weight
- All trailers, regardless of weight or cargo placement, have an equal chance of jackknifing
Quote From Page 71 Of The CDL Manual:
When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when the trailer is empty or lightly loaded. This type of jackknife is often called a "trailer jackknife"
- Small tanks which are loaded and secured onto flatbed trailers
- There are no barriers inside to slow down or stop liquid from surging
- Liquid is held in place by multiple barriers, restricting liquid surge
- There are barriers in the tank with holes in them to slow down and restrict surging liquid
Quote From Page 84 Of The CDL Manual:
Unbaffled liquid tankers (sometimes called "smooth bore" tanks) have nothing inside to slow down the flow of the liquid. Therefore, forward-and-back surge is very strong. Unbaffled tanks are usually those that transport food products (e.g., milk). (Sanitation regulations forbid the use of baffles because of the difficulty in cleaning the inside of the tank.) Be extremely cautious (slow and careful) in driving smooth bore tanks, especially when starting and stopping.
Unbaffled tankers are much more dangerous to drive, especially when the tanks aren't completely full, as liquid can surge and slosh around in any direction hindering vehicle control.
- Where you can see the rear tires on the vehicle ahead of you
- Where you can see the rear license plate of the vehicle ahead of you
- At least 5 car lengths back
- As close as possible so no vehicles will cut in front of you
Quote From Page 128 Of The CDL Manual:
If stopping behind another vehicle, stop where you can see the rear tires on the vehicle ahead of you (safe gap).
Examiners do check your "safe gap" when stopped behind other vehicles. Be certain you can see the rear tires of the vehicle in front of you.
On what day and time does a 14 hour rule violation occur?
- Day 2 at 5:00 a.m.
- Day 2 at 2:00 a.m.
- Day 2 at 4:00 p.m.
- There is no 14 hour rule violation
Quote From Page 0 Of The CDL Manual:
Violations: There is an 11 hour rule violation from 5:00 a.m. - 7:00 a.m. on Day 2.
Explanation - 11 Hour Limit: After 10 hours off duty, the driver had 11 hours of driving time available at 10:00 a.m. on Day 1. By 2:00 a.m. on Day 2, the driver had 3 hours remaining, and exceeded the limit, by 2 hours, starting at 5:00 a.m. Then, because the driver accumulated at least 10 hours of rest using a combination of at least 8 consecutive hours in a sleeper berth and another break of at least 2 consecutive hours (in this case, 8), he or she was eligible for the split sleeper berth provision. This moves the calculation point to the end of the first of the two periods of rest, or 2:00 a.m. on Day 2. Between 2:00 a.m. and 3:00 p.m., the driver had 5 hours of driving, so at 3:00 p.m. on Day 2 there were 6 hours remaining, which the driver used by 9:00 p.m. Because the driver then took at least 2 consecutive hours off duty, he or she accumulated another 10 hours of rest in two separate, qualifying periods totaling 10 hours. This moves the calculation point again, to 3:00 p.m. on Day 2, and at 11:00 p.m. on Day 2 the driver has 5 hours of driving time remaining.
Explanation - 30 Minute Break: On Day 1, the driver required a 30 minute break at 6:00 p.m. in order to continue driving. But since the driver went into the sleeper berth and stayed there for 8 hours, the requirement was no longer needed. On Day 2, the driver never stayed on duty long enough to require a 30 minute break.
Explanation - 14 Hour Limit: Calculation of the 14 hour limit begins at 10:00 a.m. on Day 1. The driver accumulates 8 hours of driving time by 6:00 p.m. before entering the sleeper berth. Because any sleeper berth period of at least 8 (but less than 10) consecutive hours is excluded from the 14 hour calculation, the driver accumulated just 13 hours by 7:00 a.m. on Day 2. The driver then met the requirements for the split sleeper berth provision, so the calculation point moves to the end of the first qualifying break, or 2:00 a.m. on Day 2. Starting from there, the driver accumulated 11 hours by 9:00 p.m. on Day 2. The driver again met the requirements for the split sleeper berth provision by getting 2 hours of rest, so the calculation point moves to 3:00 p.m. and the driver remains in compliance.
- Any A:B fire extinguisher is acceptable
- UL rating of 5 B:C or more
- UL rating of 10 B:C or more
- Any B:C fire extinguisher is acceptable
Quote From Page 102 Of The CDL Manual:
A 10 B:C Fire Extinguisher - The power unit of placarded vehicles must have a fire extinguisher with a UL rating of 10 B:C or more.
- Empty and light trucks will only stop faster on slick or wet roadway conditions
- Empty and light trucks will only stop faster on dry roadway conditions
- Empty and light trucks always stop quicker than a heavy and loaded truck
- Empty and light trucks never stop as quickly as a loaded 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.)
A question regarding stopping distance with a loaded or empty truck will likely be included on your written exam. Be sure you understand why an empty truck takes longer to stop.
- 1-2 seconds
- 2 seconds
- 1/8 second
- 3/4 second to 1 second
Quote From Page 29 Of The CDL Manual:
The average driver has a reaction time of ¾ second to 1 second. At 55 mph this accounts for 61 feet traveled.
Be sure to have reaction time and distance memorized. This will likely show up on your written exam.
- Signs put on the outside of a vehicle that identify the hazard class of the cargo
- Stickers placed on shipping papers that identify the hazard class of the cargo
- Seals placed on rear doors of box trailers or output devices on tankers to prevent hazardous materials from leaking
- Small stickers placed on the drivers and passengers side window showing the driver has a hazardous materials endorsement
Quote From Page 89 Of The CDL Manual:
Placards are used to warn others of hazardous materials. Placards are signs put on the outside of a vehicle that identify the hazard class of the cargo. A placarded vehicle must have at least four identical placards. They are put on the front, rear and both sides of the vehicle. Placards must be readable from all four directions. They are 10 3/4-inches square, square-on-point, in a diamond shape. Cargo tanks and other bulk packaging display the ID number of their contents on placards, or orange panels or white square-on-point displays that are the same size as placards, and placed near the placards.
Always be sure to ask for an extra placard or two when leaving a shipper in case a placard is blown off the truck during transit.
steer: 11,100, drives: 32,600, gross: 71,400
steer:11,850, drives: 32,850, gross: 72,400
- 65% went on the steer axle
35% went on the drive axles
- 80% went on the steer axle
20% went on the drive axle
- 75% went on the steer axle
25% went on the drive axles
- 67% went on the steer axle
33% went on the drive axles
Quote From Page 0 Of The CDL Manual:
750/1000 = .75
.75 * 100 = 75% fuel weight to the steer tires
100% - 75% = 25% went on the drive axles.