 Nicknamed "The Empress of Agincourt", by Pete Fairfull, who was its primary operator for many years, "(for its common presence around Toronto's Agincourt yard)", the locomotive served the railway until 1995, when truck problems forced its retirement.Six RSD-15s survive in preservation; all are ex-Santa Fe units.Only two are in operating condition; the Austin and Texas Central #442, originally ATSF 842, painted in a modified Southern Pacific "Black Widow" scheme,
and Green Bay and Western Railroad RSD-15 #2407 (originally ATSF 841) at the Illinois Railway Museum.