Specifications include, but are not limited to: The unit shall be a vacuum street sweeper having a closed cab, dual steering (full power), OEM dual operator controls, and a rear dumping hopper. ; The unit shall have a six-wheel configuration with all tires being the same size, separate engines for propulsion and sweeping, and an automatic transmission. ; The unit shall ; contain a 30 gallon, minimum, fuel tank for truck and a 24 gallon, minimum, fuel tank for auxiliary engine if both engines do not use the same type of fuel, or 50 gallon, minimum, fuel tank if one tank is provided. ; Overall unit height shall not exceed 12 feet ; The unit shall be sufficiently rated to transport a full load of sweeping debris at speeds up to 65 MPH..