No one was inside the front car of a runaway train that struck another Blue Line train at the Harlem stop in Forest Park, CTA officials said after reviewing video. Trains can be operated from both front and rear cars. Forty people were on a westbound train, which was stopped at the Harlem station, when it was struck by an eastbound train that was traveling on the wrong track around 7:45 a.m. Dozens of people were transported to hospitals, but all injuries were minor. Forty people were on a westbound train, which was stopped at the Harlem station, when it was struck by an eastbound train that was traveling on the wrong track around 7:45 a.m. Dozens of people were transported to hospitals, but all injuries were minor. ABC7 has learned a rail supervisor reports seeing "no one" on board when the train passed him at Forest Park. He was so concerned, he jumped down onto the tracks and ran after it, while radioing that a runaway train was heading toward Harlem. On Monday night, investigators have removed the tarp covering the point of impact, a collision that knocked around more than 40-plus passengers on a train stopped at the Harlem station.