This Standard is part of the AS 7520 suite of Standards and covers the following aspects of rolling stock body structural systems: - Construction of rolling stock - Maintenance of vehicle structure - Proof loads for use in designing vehicle structures - Crashworthiness requirements - Cowcatcher design - Wheel guard design - Door strength requirements - Glazing strength and impact requirements - Towing fixtures - Mounting of underframe equipment - Fuel tank structural requirements - Structural requirements of containers and removable structures with corner fittings - Structural requirements for rail tank cars - Structural requirements for roadrailer trailers - Structural requirement for equipment on infrastructure maintenance rolling stock.