CDL AIR BRAKES PRACTICE TEST - COLORADO

Question

21. Emergency brakes and parking brakes must be held on by:

Answer 1

hydraulic pressure.

Answer 2

mechanical force.

Answer 3

air pressure.

Answer 4

All of the above.

Answer 5

keep the rear of your vehicle close to the curb.

Answer 6

accelerate slightly.

Answer 7

release the brakes to get traction back.

Answer 8

use the trailer hand brake (if you have one) to straighten out the rig.

Answer 9

find an escape route when the service brakes fail.

Answer 10

downshift before starting down a hill.

Answer 11

avoid wheel lock up.

Answer 12

lock up the wheels in an emergency stop.

Answer 13

should always come in contact with each other.

Answer 14

should not come in contact with each other.

Answer 15

are dangerous.

Answer 16

should come in contact with each other whenever possible.

Answer 17

allows you to brake harder.

Answer 18

should only be used on dry roads.

Answer 19

replaces your normal brakes.

Answer 20

is an addition to your normal brakes.