Which describes a passenger or Freight class train equipped with the following ACSES controlled apparatus: A Data Radio, Aspect Display Unit, sealed ACSES valve or switch, audible warning device and acknowledging switch in operative condition?

• A. Marker
• B. Watchman/Lookout
• C. ACSES Controlled Train
• D. Foul Time

Answer: (C)

ACSES controlled operation is identified by the train carrying the full set of ACSES hardware and having it ready for use. The data radio provides the link to trackside systems, the Aspect Display Unit shows the current signal information to the crew, the sealed ACSES valve or switch is part of the control/brake interface that allows automatic enforcement, the audible warning device alerts the crew when the system is active, and the acknowledging switch is used to acknowledge and reset those warnings. When all of these elements are in operative condition, the train is designated as an ACSES Controlled Train, meaning it is under ACSES protections and capable of automatic speed and signal compliance.

Markers and Watchman/Lookout refer to specific crew roles or train types not equipped with this ACSES control hardware, and Foul Time is a timetable/operational concept about time allowances rather than a description of a train’s equipment.