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RDC-1/RDC-2

The Budd Rail Diesel Car, RDC or Buddliner is a self-propelled diesel multiple unit (DMU) railcar. Between 1949 and 1962, 398 RDCs were built by the Budd Company of Philadelphia, Pennsylvania, United States. The cars were primarily adopted for passenger service in rural areas with low traffic density or in short-haul commuter service, and were less expensive to operate in this context than a traditional diesel locomotive-drawn train with coaches. The cars could be used singly or coupled together in train sets and controlled from the cab of the front unit.



Between RDC-1 and RDC-2, up to 12 units can be coupled


Photo by Mike Powell (originally posted to Flickr) on Wikimedia commons
https://commons.wikimedia.org/wiki/Category:New_Haven_RDC_32#/media/File:Budd_RDC-1_Danbury_11.jpg