Union Pacific -- Air Brakes Exam Questions with and Answers with
Verified Solutions | Latest 2026 Update
Q: Who can perform a Class I inspection on an "Extended Haul" train?
Answer:
Qualified Mechanical Inspector List the reasons a "Light Engine Running Air Brake
Test" would have to be performed? An engineer must perform this air test when:
Taking charge of engine not coupled to other equipment and originally made up and
tested by other than the assigned engineer or Controlling ends have been changed.
What test could be done in place of a "Light Engine Running Air Brake Test"? A
"Standing Locomotive Air Brake Test" may be performed when the Light Engine
Running Air Brake Test is not practical. What is a *Transfer Train Movement*? A
train making transfer movements not exceeding 20 miles in one direction*. What is a
Class III Brake Test? Application and Release Test A "Class III Brake Test" must be
performed when: Test must be conducted when: Any change is made to a locomotive
consist, A caboose is changed, Picking up a block of previously tested cars that have
not been off air for more than 4 hours, Helper locomotives are added anywhere in the
train or removed from other than the rear end of the train, One or more consecutive
cars are set out of the train, Defective equipment is set out of train, or Rearranging
previously tested cars in train for hazardous materials, train make-up, or helper
placement. Who is responsible for performing the necessary air brake tests on a
locomotive if inspection forces are not available? An engineer taking charge of a
locomotive. When must a locomotive consist air brake test be completed? Making up
a locomotive consist, Adding locomotive to a consist, Other than rear locomotive is
removed from consist, Locomotive consist is rearranged, or Changing operating ends
of a consist.
, Q: Locomotive speed indicators must be accurate within how many MPH of actual
speed?
Answer:
±3 MPH at speeds between 10 and 30 MPH. ±5 MPH at speeds above 30 MPH. Can
the air brake system be depended upon to prevent an undesired movement? No On a
descending grade with slack bunched, where would the hand brakes be applied? On
low end On a ascending grade with slack stretched, where would the hand brakes be
applied? On high end What position must retaining valves remain in? EX, (Exhaust
Position) After applying handbrakes in the proper place, what must be done to verify
the hand brake(s) applied will prevent movement? By releasing all air brakes. What
must be completed if the train, (With Consist Attached), must be secured at other
than the terminal or crew change location? Determine the minimum number of hand
brakes required to secure a train. Secure equipment against undesired movement as
outlined in Rule 32.1.1 (Securement Procedures). Secure the lead locomotive consist
and apply the air brakes as outlined in Rule 32.2.1 (Unattended Locomotive(s)),
Verified Solutions | Latest 2026 Update
Q: Who can perform a Class I inspection on an "Extended Haul" train?
Answer:
Qualified Mechanical Inspector List the reasons a "Light Engine Running Air Brake
Test" would have to be performed? An engineer must perform this air test when:
Taking charge of engine not coupled to other equipment and originally made up and
tested by other than the assigned engineer or Controlling ends have been changed.
What test could be done in place of a "Light Engine Running Air Brake Test"? A
"Standing Locomotive Air Brake Test" may be performed when the Light Engine
Running Air Brake Test is not practical. What is a *Transfer Train Movement*? A
train making transfer movements not exceeding 20 miles in one direction*. What is a
Class III Brake Test? Application and Release Test A "Class III Brake Test" must be
performed when: Test must be conducted when: Any change is made to a locomotive
consist, A caboose is changed, Picking up a block of previously tested cars that have
not been off air for more than 4 hours, Helper locomotives are added anywhere in the
train or removed from other than the rear end of the train, One or more consecutive
cars are set out of the train, Defective equipment is set out of train, or Rearranging
previously tested cars in train for hazardous materials, train make-up, or helper
placement. Who is responsible for performing the necessary air brake tests on a
locomotive if inspection forces are not available? An engineer taking charge of a
locomotive. When must a locomotive consist air brake test be completed? Making up
a locomotive consist, Adding locomotive to a consist, Other than rear locomotive is
removed from consist, Locomotive consist is rearranged, or Changing operating ends
of a consist.
, Q: Locomotive speed indicators must be accurate within how many MPH of actual
speed?
Answer:
±3 MPH at speeds between 10 and 30 MPH. ±5 MPH at speeds above 30 MPH. Can
the air brake system be depended upon to prevent an undesired movement? No On a
descending grade with slack bunched, where would the hand brakes be applied? On
low end On a ascending grade with slack stretched, where would the hand brakes be
applied? On high end What position must retaining valves remain in? EX, (Exhaust
Position) After applying handbrakes in the proper place, what must be done to verify
the hand brake(s) applied will prevent movement? By releasing all air brakes. What
must be completed if the train, (With Consist Attached), must be secured at other
than the terminal or crew change location? Determine the minimum number of hand
brakes required to secure a train. Secure equipment against undesired movement as
outlined in Rule 32.1.1 (Securement Procedures). Secure the lead locomotive consist
and apply the air brakes as outlined in Rule 32.2.1 (Unattended Locomotive(s)),
