Multiplexing method of traffic road space and its upper vehicle

The present invention relates to a traffic road space multiplexing method and its supper layer vehicle said method is characterized by that on same road it utilizes running upper layer vehicles to form high and low differentiation of lower layer road lane and upper layer space lane so as to attain the space multiplexing of traffic road. The upper layer vehicle includes upper vehicle body and lower chassis, the width of upper vehicle body is greater than that of lower chassis, so that one side of chassis under the vehicle body can remain the road space through which other car can be passed, therefore said invention can raise road space utilization rate