This odd-looking piece of equipment is ex-Pittsburgh Port Authority Transit M551, a motorized side-dump car preserved at the Pennsylvania Trolley Museum, seen here on August 10 2002.

Traction Around North America in the Early-2000s

Pennsylvania Trolley Museum
Washington PA

This odd-looking piece of equipment is ex-Pittsburgh Port Authority Transit M551, a motorized side-dump car preserved at the Pennsylvania Trolley Museum, seen here on August 10 2002. Built by Differential in 1922, M551 is one of only two operational side-dump cars preserved in museums.

Frank Hicks photo

usr_m_museum_pennsylvaniatrolley_pitm551_20020810_fh_hicks140.jpg

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