The present invention provides a traffic system comprising an electric vehicle and a power navigation road. The power navigation road is provided with a power supply equipment and a lane on which the electric vehicle can travel; the lane is provided with a guide rail groove corresponding to the electric vehicle. The electric vehicle is provided with a power-taking device used for connecting to the power supply equipment, an electric motor and a guide wheel corresponding to the guide rail groove. The electric vehicle and the power supply equipment are connected by the power-taking device; the power supply equipment is connected to the positive electrode of the electric motor; the negative electrode of the electric motor is connected to the guide wheel; the guide wheel is connected to the guide rail groove. The power-taking device comprises a first telescopic device fixed to the top of the electric vehicle and a power-taking bar connected with the first telescopic device. The top end of the power-taking bar is provided with a power-taking friction plate for taking power by the friction with the power supply equipment. The traffic system solves the charging problem of the electric vehicle. The automatic navigation and driving are achieved by the connection between the guide wheel and the guide rail groove on the lane, and the driving safety is ensured.