The Commission undertook a range of research to identify both the problems in Melbourne's planning, and theory and practice for resolving them. Prominent surveyor and planner Saxil Tuxen worked acted (in voluntary capacity) as a technical expert, travelling to the United States in 1925, to examine their approaches to surveying and planning. His primary authorities were Melbourne's waterways, roadways and public transport, where he tried to ensure that Melbourne's
tram networks were preserved and maintained, at a time when other planning experts were calling for them to be removed and to promote development which incorporated Melbourne's waterways, notably, the Yarra River. ==Railways==