The judgment text has not been provided in the prompt. The citation indicates this is a 1977 decision of the Australian Conciliation and Arbitration Commission (reported in the Commonwealth Arbitration Reports) concerning industrial awards for transport workers operating passenger vehicles in South Australia. The case involves both the principal award and a 'roping-in' award (an award extending coverage to additional employers or employees). Without access to the actual judgment content, no substantive legal analysis can be provided.