F-Line to Dudley
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FCMB board presentation on the Green Line's derailment issues: http://www.mbta.com/uploadedfiles/About_the_T/Board_Meetings/G. Green Line Derailments -TO POST.pdf
Yep. 7 out of 10 of the derailments in the reporting period were Bredas. Of the Type 7 derailments, only 1 was a vehicle fault: the others were an icy plow mound blocking a grade crossing during one of the '15 blizzards, and a mis-thrown switch from dispatcher error. With the Bredas it's almost totally those problematic trucks starting to suffer the ravages of age on track that isn't pitch-perfect.
Most of the prevention is going to involve clamping down ever-tighter on operator speed enforcement, because there's only so much you can do to stay ahead of the cars' aging process with more track work and preventative maint before diminishing returns send derailment rates inching right back up.
Yep. 7 out of 10 of the derailments in the reporting period were Bredas. Of the Type 7 derailments, only 1 was a vehicle fault: the others were an icy plow mound blocking a grade crossing during one of the '15 blizzards, and a mis-thrown switch from dispatcher error. With the Bredas it's almost totally those problematic trucks starting to suffer the ravages of age on track that isn't pitch-perfect.
Most of the prevention is going to involve clamping down ever-tighter on operator speed enforcement, because there's only so much you can do to stay ahead of the cars' aging process with more track work and preventative maint before diminishing returns send derailment rates inching right back up.