Question

course exam
how do you activate the emergency brake during the air - brake test?
a. shift to neutral and hold the service brake down.
b. set and release the parking brake three times.
c. press the service brake and gas pedals to the floor.
d. pump the brake until the buttons pop out.

Explanation:

To activate the emergency brake during the air - brake test, setting and releasing the parking brake three times is a standard procedure. This helps in checking the proper functioning of the emergency brake system. Shifting to neutral and holding the service brake down (Option A) is not the correct way for activating the emergency brake during this test. Pressing the service brake and gas pedals to the floor (Option C) is not relevant to activating the emergency brake. Pumping the brake until the buttons pop out (Option D) is not the standard method for activating the emergency brake during the air - brake test.

Answer:

B. Set and release the parking brake three times.