Smokin’ in the Windy City. Metra 100 (F40PH-3) is the nominal class unit, and was originally built in 1977 by EMD as an F40PH. Seen here on Wednesday, May 15, 2019 under the tri-light signal bridge at CP Taylor just outside Chicago’s Union Station, it is soldiering on into its 42nd year of service on area’s commuter lines.