Trams of Australia
The control equipment and electric drives are identical to that of the Z3 tram. This tram was introduced with trolley pole, but many were later converted to pantograph operation, same as the A2.
The idea of a seated conductor, as used on the Z class trams was abandoned with this tram. The doors have moved back to positions on the side much like those on the old W class trams, but with the addition of a small forward door, probably intended to support driver-only operation. Note that the route number is no longer visible when looking down the side of the tram (a point of some comment when the tram was introduced).
This tram has better brakes than the A1, and was the first built with a pantograph rather than trolley poles for current collection. Later, A1 class and some Z class trams would be converted to pantograph operation.
 Thanks to Daniel Bowen for the picture.