Traveling system for a driving vehicle

A traveling assisting method for a driving vehicle traveling on a traveling path, wherein the driving vehicle includes a driving unit and a driving motor, the method comprising:

• providing a plurality of electric power supplies including a first electric power supply and a second electric power supply respectively at a first point and a second point spaced apart from the first point on the traveling path of the driving vehicle, each of the electric power supplies being connectable with the driving vehicle to move together with the driving vehicle and supply power to the driving motor of the driving vehicle and detachable from the driving vehicle;
• attaching the first electric power supply to the driving vehicle to assist the traveling of the driving vehicle, when the driving vehicle reaches the first point on the traveling path;
• detaching the first electric power supply from the driving vehicle one of:
• (i) between the first point and the second point on the traveling path, and (ii) at the second point on the traveling path;
• and
• attaching the second electric power supply to the driving vehicle to assist the traveling of the driving vehicle, when the driving vehicle reaches the second point on the traveling path.