Patent attributes
When it is determined that the host vehicle is stopped at the intersection in the right turn waiting state, the navigation ECU forms a right turn waiting mark representing the right turn waiting state on the road surface of the opposing lane at the intersection where the host vehicle is stopped with a visually identifiable laser beam with a predetermined color. When it is determined that the host vehicle is brought into the right turn start state from the right turn waiting state where the host vehicle is stopped at the intersection, the navigation ECU forms the right turn start mark representing the right turn start state instead of the right turn waiting mark on the road surface of the opposing lane at the intersection where the host vehicle enters with the visually identifiable laser beam with the color (for example, red) different from that of the right turn waiting mark, at substantially the same position thereof in accordance with the traveling state of the host vehicle.
