Quote:
Originally Posted by frinkprof
This redundancy serves an important purpose from a fleet management perspective. As it is, if one vehicle is down for maintenance or is unusable for some other reason, it doesn't take a whole consist out of the rotation. Units can be combined in many combinations to fulfill revenue service needs.
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Married pairs would help if that's an issue. Then only half the train would be out of commission, in stead of the whole thing. However, the advantages far outweigh the negatives I think. It would add far more capacity to the system than the capacity you would lose by having to take out extra cars when one breaks down.