Editing USRA standard (section)

{{More citations needed|date=December 2021}}[[File:USRA_Light_Mikado.jpg|thumb|The [[USRA Light Mikado|Light Mikado]] was the standard light freight locomotive and the most widely built type of the USRA standard designs.]]
The '''USRA standard''' [[locomotive]]s and [[railroad car]]s were designed by the [[United States Railroad Administration]], the [[nationalised|nationalized]] rail system of the [[United States]] during [[World War I]].  1,870 [[steam locomotive]]s and over 100,000 railroad cars were built to these designs during the USRA's tenure. The locomotive designs in particular were the nearest the American [[railroad]]s and [[List of locomotive builders|locomotive builders]] ever got to standard locomotive types, and after the USRA was dissolved in 1920 many of the designs were duplicated in number, 3,251 copies being constructed overall.  The last steam locomotive built for a [[Class I railroad]] in the United States, an [[0-8-0]] built by the [[Norfolk and Western Railway]] in 1953, was a USRA design.  A total of 97 railroads used USRA or USRA-derived locomotives.