Pikes Peak Trolley Museum

The PCC (Presidents' Conference Committee) is a tram design that was first built in the United States in the 1930s. The design proved successful domestically, and after World War II it was licensed for use elsewhere in the world where PCC based cars were made. The PCC car has proved to be a long-lasting icon of streetcar design, and many remain in service around the world.

The "PCC" ("Presidents' Conference Committee") originated from the design committee formed in 1929. It was renamed the "Electric Railway Presidents' Conference Committee" (ERPCC) in 1931. The group's membership consisted primarily of representatives of several large operators of U.S. urban electric street railways plus potential manufacturers. Three interurban lines and at least one "heavy rail", or rapid transit, operator—Chicago Rapid Transit Company—were represented as well. Also included on the membership roll were manufacturers of surface cars (streetcars) and interested component suppliers.

ERPCC's goal was to design a streamlined, comfortable, quiet, and fast accelerating and braking streetcar that would be operated by a seated operator using floor mounted pedal controls to better meet the needs of the street railways and appeal to riders. ERPCC prepared a detailed research plan, conducted extensive research on streetcar design, built and tested components, made necessary modifications and revisions based upon the findings, and ultimately produced a set of specifications for a standardized and fixed design. It included a modest list of available options with ample room for customer customization but was to be built with standard parts as opposed to a custom designed car body with diverse parts added depending on the whims and requirements of the individual customer. Numerous national and international users operated large fleets of PCC cars for many years.

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