Abstract: An electroluminescent light band for vehicles comprises an electroluminescence device and a front pattern sheet. The luminous surface of the electroluminescence device has at least two luminous regions including a redirection-displaying region and a pattern exchangeable region. The redirection-displaying region can show the moving direction of a driven car, that is, it indicates a right turn or a left turn synchronized with the turn signal of the car. The exchangeable pattern region allows a car owner to put his favor front pattern sheet on the luminous surface of the electroluminescence device, such as a translucent sheet with a personal creative pattern or colorful advertisement picture. Furthermore, miniature suction cups placed at the luminous surface of the electroluminescence device are capable of repeatedly sticking on the rear window of the car so as to allow easy change of the front pattern sheets.