Union Pacific -- Air Brakes (Definitions) Exam Questions with and
Answers with Verified Solutions | Latest 2026 Update
, Q: End-of-Train Telemetry System A radio end-of-train telemetry system that
consists of: 1)
Answer:
End-of-train device (EOT) mounted on the trailing coupler of the last car or linked
DP consist
located on the rear of the train.
2) Head-of-train device (HEU) in the locomotive.
Hand Brake A mechanical arrangement of levers, chains, rods, gears, and fulcrum.
When
applied, the hand brake forces the brake shoes against the braking surfaces (wheel
tread or
disc) to control car or locomotive movement. (If brake stick available and it is
practical--it must
be used).
Head of Train Device (HEU) A radio device located in the locomotive cab that
communicates
with an End of Train Device (EOT) or distributed power (DP) consist.
Main Reservoir An air reservoir on the locomotive for storing and cooling
compressed air.
Off Air Condition exists when the brake system has not been connected to a
continuous
source of compressed air of at least 60 pounds per square inch (psi) for a period of 4
hours or
more.
Answers with Verified Solutions | Latest 2026 Update
, Q: End-of-Train Telemetry System A radio end-of-train telemetry system that
consists of: 1)
Answer:
End-of-train device (EOT) mounted on the trailing coupler of the last car or linked
DP consist
located on the rear of the train.
2) Head-of-train device (HEU) in the locomotive.
Hand Brake A mechanical arrangement of levers, chains, rods, gears, and fulcrum.
When
applied, the hand brake forces the brake shoes against the braking surfaces (wheel
tread or
disc) to control car or locomotive movement. (If brake stick available and it is
practical--it must
be used).
Head of Train Device (HEU) A radio device located in the locomotive cab that
communicates
with an End of Train Device (EOT) or distributed power (DP) consist.
Main Reservoir An air reservoir on the locomotive for storing and cooling
compressed air.
Off Air Condition exists when the brake system has not been connected to a
continuous
source of compressed air of at least 60 pounds per square inch (psi) for a period of 4
hours or
more.
