The present invention relates to a bicycle with light system. The bicycle includes a tube assembly including a frame with mutually fixed tube elements with a tube wall and movable tube elements, such as a steering pin and a handlebar, a light generation subsystem including at least one independently controllable light source for generation of light, a light control for controlling the light generation subsystem for providing at least one light effect, and a light guiding subsystem for guiding light over a part of the path between the at least one light source and the surroundings of the bicycle. The at least one light source is arranged in at least one of the at least one tube element. The bicycle includes the at least one opening in at least one tube element for passing the light through the tube wall. The light guiding subsystem provides a guiding from the inside of the respective at least one tube element to the outside of the at least one tube element of the frame.