Filmed in the days before the metal screens were erected to protect trains and road traffic from people throwing stones, this film shows various types of CityRail trains - including Tangara and Tulloch - on the Sydney Harbour Bridge plus views out of open windows (and doors!) of trains which are crossing the bridge.
Many scenes were also filmed from the side of the bridge which is only meant to be for cyclists, although a couple of views were taken from the other side - if only to show why filming from there was not worthwhile - and to see the Sydney Opera House.
When the bridge was first built the other side of the bridge featured a pair of tracks for the trams, but following 'transport policy' advice from the so called 'experts' who were in charge of transport in London the clean electric trams were replaced with fume belching diesel buses.
However as if as a memento some of the former tram overhead wire supports remain on the bridge and can be seen in this film.