This Standard specifies the requirements for roll-over protective structures and falling-object protective structures, additional to those given in AS 2294.2, AS 2294.3 and AS 2294.4.The Standard is intended to apply to operator controlled earth-moving machinery as given in AS 2294.2 and AS 2294.3 and where the design allows for a seated operator.While there are certain types of earth-moving machinery to which this Standard is not intended to apply, it may be used to provide guidance to the manufacturers of roll-over or falling-object protective structures should it be decided to fit such protection in a particular application.NOTE: Roll-over protective structures and falling-object protective structures are structures whose primary purpose is to reduce the possibility of an operator who is wearing a seat belt in accordance with AS 2664, ISO 6683 or SAE J386 from being crushed or otherwise injured should the machine roll over or be struck by a falling object.