12/26/2025
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Home
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Rolling Stock Home
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AAR Types
> M970
AAR Rolling Stock Type: M970
AAR Class:
NF
: A device mounted on the trailing coupler on the rear car of the train coupled to the brake pipe. The SBT senses brake pipe pressure, and may sense motion and direction. This information is relayed by radio to the head end of the train to a RDU, CDU or a CLU/IDU combination. In addition, the SBT acts as a marker to indicate the rear of the train and is equipped with an emergency braking feature to be used in the event of a loss of the normal braking capability from the head end of the train.
AAR Type:
M970
Detail Info:
Misc Cars
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Reporting Mark
Name
Count
BNQ
Burlington Northern and Santa Fe Railway
60
CNQ
Canadian National Railway
1
CPT
Canadian Pacific Railway
14
CSXE
CSX Transportation Incorporated
42
FXE
Ferromex
2
IC
Illinois Central
1
NS
Norfolk Southern
463
UPRQ
Union Pacific Railroad Company
14
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