Officials say the accident involved a tow truck, a car, and a route 36 trolley.
The trolley operator was the only injury of those aboard the streetcar.
All four were taken to the Hospital of the University of Pennsylvania for minor injuries.
Four injured in trolley accident - Philadelphia News
Southwest Philadelphia - December 26, 2008 The accident happened around 6:00 p.m. at 59th Street and Elmwood Avenue.
