Tim Horling's Collection
12/24/2025
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Pictures of SBD rolling stock
AAR Class:
NB
: Receiver Display Unit (RDU). A device mounted on the control stand in the locomotive to receive, analyze and display information as transmitted by the SBU. The RDU provides audible alerts and displays to assist the engineer in train operation.
AAR Type:
M960
Detail Info:
Misc Cars
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