"Traffic Lights" is a song by German recording artist Lena Meyer-Landrut. It was written by Hayley Aitken, Alexander James and Harry Sommerdahl and produced by production teams Beatgees and Biffco for her fourth studio album, Crystal Sky (2015). The song was released by Universal Music Germany as the album's lead single on 1 May 2015. The remix EP followed on 12 June 2015.