The Halton County Radial Railway is a working museum of electric streetcars, other railway vehicles, trolleybusses and buses. It is operated by the Ontario Electric Railway Historical Association (OERHA). It is focused primarily on the history of the Toronto Transit Commission and its predecessor, the Toronto Transportation Commission (TTC), with a collection including PCC, and Peter Witt cars, earlier streetcars and Gloucester series and Montreal-built subway cars.