Officially referred to as standard centre-aisle trams, 65 trams in this class built between 1908 and 1925. These trams could carry 90 passengers. The last 21, which were built for the Brisbane Tramways Trust between 1924 and 1925, had 12 windows, remainder built with 6 windows. Originally they were built with open end platforms, but these were enclosed in the 1930s. Some received "streamlining" with oval windows and skirting around their bogies. The attached picture illustrates the differences between various members of this class. The tram in the foreground is a 12 window Dreadnought (built by the Tramways Trust), still with seats on its end platforms and no streamlining. The tram ahead of it is an older, 6 window Dreadnought (built by the Tramways Company), but with its end seats removed and streamlining around its windows and skirting below the body of the tram. Each of these four cars was unique in their own way. Two were outwardly like the Dreadnoughts. Tram 100 was built in 1903 as the Tramway Company Manager's personal "Palace" car, fitted with carpets, plush seat covers and further interior decorations. Converted to regular passenger use in 1918 and was withdrawn from service in 1958. Tram 110 was built in 1906 as the prototype for the Dreadnoughts, but it had different trucks, which resulted in high steps. It was withdrawn from service in 1952. Tram 101 was built in 1899 originally with no solid roof, just a canvas awning suspended from a lightweight frame. It was withdrawn from service around 1935. Tram 104 was converted in 1943 from a Brill 12 bench car that had been badly damaged in an accident. In its converted form this tram had design features derived from the Four Motor, Dropcentre and Baby Dreadnought tram designs. It was withdrawn from service in 1958. Known as "big Lizzie", also sometimes referred to as a "New York type tram", tram 301 was intended to be the first of a fleet of inter-urban trams. It was built by J G Brill and Company in 1912 and imported in 1914. It was unusual for a Brill stepless car in that it was partially made of timber, rather than the normal all-metal construction. It was the first fully enclosed tram in Brisbane. Heavy and troubled by poor road clearance, it usually only saw service on the West End – Ascot line and was withdrawn from service in 1935. Between 1929 and 1930, 9 Dreadnoughts were converted to "one-man" operation, as a cost-saving measure.