CDL Air Brakes Practice Test - Indiana

Question

21. With a dual air brake system:

each system shares air tanks.
each system has its own air tanks, hoses and lines.
each system shares the same lines and hoses.
one system is the main braking system while the other is a back-up system.

Answer 1

each system shares air tanks.

Answer 2

each system has its own air tanks, hoses and lines.

Answer 3

each system shares the same lines and hoses.

Answer 4

one system is the main braking system while the other is a back-up system.

Answer 5

never make pull-ups to reposition your vehicle.

Answer 6

turn the steering wheel in the direction you want to go.

Answer 7

try to position your vehicle so you can back in a straight line.

Answer 8

avoid correcting the drift.

Answer 9

never be used for parking.

Answer 10

never be used to test the trailer brakes.

Answer 11

be used in driving.

Answer 12

All of the above.

Answer 13

shut the air off and put on the trailer emergency brakes.

Answer 14

supply the tires with air.

Answer 15

keeps air in the tractor or truck brake system.

Answer 16

supply the trailer with air.

Answer 17

pump the brakes.

Answer 18

rev or lug the engine.

Answer 19

check the electrical cables.

Answer 20

check the air line connections.