CO CDL DOUBLES TRIPLES TEST - PRACTICE TEST
11.
You should test the coupling by:
|
disconnect the safety chains.
|
|
|
locking the pintle hook.
|
|
|
applying the parking brakes so the rig will not move.
|
|
|
pulling against the pin of the second semitrailer.
|
12.
Which of the following is most likely to roll over?
|
The middle trailer of a triple
|
|
|
The rear trailer of a double
|
|
|
The front trailer of a double
|
|
|
The rear trailer of a triple
|
13.
The service line is also called:
|
control line.
|
|
|
power line.
|
|
|
brake line.
|
|
|
cable line.
|
14.
If you will be transporting hazardous materials that require placards, you must:
|
obtain a special transit permit.
|
|
|
ask permission of the local transportation agency.
|
|
|
obtain a hazardous materials endorsement.
|
|
|
transport the materials at night only.
|
15.
Placards are:
|
a type of safety equipment.
|
|
|
signs put inside a vehicle used to warn others of hazardous materials.
|
|
|
signs placed on a vehicle to identify the hazard class of the cargo.
|
|
|
devices placed below a vehicle to improve traction.
|
16.
When inspecting the coupling, how much space should there be between the upper and the lower fifth-wheel?
|
½ inch
|
|
|
It depends on the load
|
|
|
It depends on the trailer
|
|
|
None.
|
17.
What is Gross Vehicle Weight?
|
The total weight of a single vehicle, excluding its load
|
|
|
The total weight of a combination of vehicles excluding the load
|
|
|
The total weight of a single vehicle, including its load
|
|
|
The total weight of the cargo
|
18.
Dollies with ABS are required to have a malfunction lamp:
|
on the front.
|
|
|
on the left side.
|
|
|
on the right side.
|
|
|
on the rear.
|
19.
When coupling a double or triple, ________ should be attached last.
|
the more heavily loaded trailer.
|
|
|
the middle trailer.
|
|
|
the trailer right behind the cab.
|
|
|
None of the above.
|
20.
The safety valve installed in the first tank the air compressor pumps air is set to open:
|
at 30 psi.
|
|
|
if there is too little pressure.
|
|
|
every 15 minutes.
|
|
|
if there is too much pressure.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More