This Architectural Drawing is AutoCAD, 2d drawing of Section a truck in AutoCAD, dwg file. GVW for a three-axle truck was increased to 28.5 tonne from 25 tonne. For a five-axle truck, the vehicle weight was increased from 37 tonne to 43.5 tonne, up by over 25 percent. For tractor trailers, the limit has been raised by 36 percent.1