The electric rail straddle car is made of reliable quality materials and used together with the electric rail car. The body quality is reliable. It is composed of a super capacitor, a transmission, an emergency brake switch, and a signal receiver. The structure is simple, the volume is small, the operation is convenient, and Increase storage capacity, not limited by distance, fast charging speed, slow discharging speed, long use time, precise positioning, realize fixed-point parking, strong load capacity, and can transport goods of different specifications and sizes.