Major General Sir Robert Joseph Henry Risson, was an Australian engineer, soldier, and tramway administrator. After university he worked for the Brisbane Tramways Trust, later under the auspice of Brisbane City Council, as an engineer and administrator. During World War II Risson served in the Middle East and New Guinea. Following the war he returned to the Brisbane tramways, and became chairman of the Melbourne and Metropolitan Tramways Board from 1949 to 1970. In this position he defended trams, and is considered a major factor in the survival of Melbourne's tram system. Risson had ties with a myriad of professional and community organisations, including the Freemasons, where he served as Grand Master of the United Grand Lodge of Victoria in the mid-1970s. Risson was decorated for his service, holding the rank of major general and being knighted.

The Melbourne tramway network is a tramway system serving the city of Melbourne, Victoria, Australia. The tramway network is centred around the Melbourne central business district (CBD) and consists of approximately 1,700 tram stops across 24 routes. It is the largest operational urban tram network in the world and one of the most used, with more than 500 trams and 250 kilometres of double tram track. It served a patronage of 206 million over the year 2017-2018. Trams are the second most utilised form of public transport in Melbourne after the city's metropolitan commuter railway network.