Combination - Nebraska Cdl

1 . What is a bobtail?

A tractor without a semi-trailer A tractor with two semi-trailers A tractor that goes faster than the speed limit A tractor that goes slower than the speed limit Click Here Full Cheat Sheet

2 . To help prevent a rollover, cargo should be:

Placed as high as possible inside a trailer. Placed as low as possible inside a trailer. Placed on the driver’s side of a trailer. Take a FREE Practice Test Now

3 . To help prevent rollovers, you should:

Accelerate quickly after stopping. Drive slowly around turns. Keep the load near the back of the trailer. Keep the load on one side of the trailer. Take a FREE Practice Test Now

4 . To prevent a trailer from rolling over, you should:

Speed up when nearing a corner. Make sudden steering moves. Take on-ramps faster than the posted speed limit. Drive slowly around corners. Take a FREE Practice Test Now

5 . What is a tractor protection valve?

A valve to keep air in the brake system should there be a bad leak A valve that prevents the truck from being stolen A valve that prevents the driver from going too fast A valve that prevents the trailer from accidentally being released Click Here Full Cheat Sheet

6 . Using the trailer hand brake while experiencing a trailer jackknife will:

Stop the skid. Straighten the trailer. Increase traction. Continue the skid. Take a FREE Practice Test Now

7 . If you must cross traffic while driving a combination vehicle, you should:

Assume other drivers will make room for your vehicle. Wait for a gap large enough for your vehicle to safely cross. Rely only on your mirrors. Take a FREE Practice Test Now

8 . Before beginning a trip, you should:

Leave the service line valve open. Remove the relay valves. Close the emergency line valve. Take a FREE Practice Test Now

9 . A driver should test the tractor protection valve by:

Pulling the yellow, diamond-shaped knob. Releasing air with the brake pedal. Unlocking the trailer doors. Click Here Full Cheat Sheet

10 . Fully-loaded rigs:

Usually are very responsive to steering. Are more likely to roll over than empty rigs. Can stop quickly. Take a FREE Practice Test Now

11 . When coupling, after you've connected the air lines to the trailer, you should:

Supply air to the trailer. Activate the emergency brake. Disconnect the glad hands. Take a FREE Practice Test Now

12 . If your trailer goes off course while you are backing, you should:

Continue the backing process without changing anything. Pull the truck forward, readjust, and start backing again. Get out of the truck and move the trailer into the right position. Turn the steering wheel all the way to the left until the trailer straightens out. Take a FREE Practice Test Now

13 . What is a bobtail tractor?

A tractor without a semi-trailer A tractor with two semi-trailers A tractor that travels faster than the speed limit Click Here Full Cheat Sheet

Study tip: Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet” 99.2% of people who use the cheat sheet pass the FIRST TIME Click Here Full Cheat Sheet

14 . Before backing your tractor under the trailer, make sure your trailer brakes are:

Disengaged. Locked. Deactivated. Dry. Take a FREE Practice Test Now

15 . The easiest way to recognize that your trailer has begun to skid is to:

Ask another driver. Use your mirrors to determine if the trailer has left the lane. Release the brake pedal and then push it down again. Watch the jackknife warning light on the control panel. Take a FREE Practice Test Now

16 . The trailer hand valve:

Should always be used for parking. Should only be used for parking on a downgrade. Should never be used for parking. Take a FREE Practice Test Now

17 . When backing a trailer, you must turn the steering wheel:

In the direction you want the trailer to move. In the direction opposite of where you want the trailer to move. To the left until backing is complete. Click Here Full Cheat Sheet

18 . Trailers with low underneath clearance can present challenges when driving over:

Bridges. Railroad tracks. Overpasses. Take a FREE Practice Test Now

19 . After coupling, there should be ____ between the upper and lower fifth wheel.

No space Very little space A lot of space Three inches of space Take a FREE Practice Test Now

20 . If unsure if a trailer has an Anti-Lock Braking System (ABS), you can:

Look under the trailer for wheel speed sensors coming from the back of the brakes. Remove a tire and look for the ABS sensor on the axle. Assume it does have ABS. Take a FREE Practice Test Now

21 . When coupling:

You can assume all vehicles are the same. Be sure that you are coupling correctly. Cracks in the mounting are acceptable. Click Here Full Cheat Sheet

22 . What happens when the wheels of a trailer lock up?

The trailer will usually continue to move in a straight line. The trailer will disengage. The trailer will likely swing around. The trailer will stop. Take a FREE Practice Test Now

23 . An air supply control lever should be in its "normal" position when you are:

Changing a tire. Applying the trailer emergency brakes. Pulling a trailer. Using your spring brakes. Take a FREE Practice Test Now

24 . To lower the risk of a rollover, you should:

Load the cargo as far forward as possible. Load the cargo as far back as possible. Load the cargo as low as possible. Stack the cargo as high as possible. Take a FREE Practice Test Now

25 . When backing up your tractor while coupling it to a trailer, the trailer brakes should be:

Deactivated. Locked. Unlocked. Click Here Full Cheat Sheet