A 1997 Audi driven by John Darley, 74, of Princeton was traveling South on North Harrison Street and ignored a red traffic light signal just before 10:30 a.m. today, police said. The Audi struck a 2011 black Kia driven by Mary Greenberg, 61, of Princeton. The Kia was traveling west on Franklin. This vehicle was knocked onto its left side and struck a third vehicle driven by Danielle Otis, 43, of Princeton. Otis was driving going east on Franklin. Darely was issued a traffic citation for disregarding a traffic signal. No injuries were reported, police said.