| 摘要 |
The present invention provides a device and a method to display the breadth of a vehicle on a road. The method to display the breadth of a vehicle comprises a beam irradiation process of irradiating beams, and a rotation and reflection process of reflecting the beams irradiated from the beam irradiation part, but outputting two breadth marking lines on a road positioned in front of the vehicle while rotating; wherein the width between the two breadth marking lines is greater than or same as the breadth of the vehicle. |
