interlocking device, located under a mechanical signal frame, is a system of rods, sliding bars and levers that are configured so that points cannot be changed in conflict, thus preventing movements that may cause a collision or other accident. Although 169 Queensland railway stations had interlocking by 1918, mechanical interlocking technology eventually became obsolete, as electrical interlocking or electro-pneumatic systems replaced it. Computerised Centralised Traffic Control (CTC) signalling systems now control most of the network. As well as the station buildings, signals and interlocking, the station was beautified. The ornamental planting proposed in the 1910 scheme was developed by George Wreidt and Bert Wickham, both station masters at Kuranda. The tropical vegetation in the platform's gardens and under the platform shelters helped to soften the lines of the station, which first won the Northern Division of the Railways' Annual Garden Competition in 1915 and was so often the winner in subsequent years that it became folklore that Kuranda won every year. By 1927 the station included a goods shed to the south-east of the main platform, and a turntable at the north-west end of the station. The current turntable is apparently smaller than the original, which was relocated to Port Douglas. Elements that were present in 1932 which no longer exist include a motor shed by the turntable, and signalman's, ganger's and waitresses' quarters to the south of the station near Arara Street. Due to the position of the station at the top of the range climb the station played a key role in freight handling. Extra trains would usually run to Kuranda where their load was transferred, as trains operating west of Kuranda were able to haul double the load they could carry up the range. As well as freight services, tourist trains ran to Kuranda, although the tourist service was not a formal part of the public timetable of the Queensland Railways until the 1960s. The tourist potential of the second section was recognised early on, with Cairns Alderman Macnamara in September 1887 calling it a great engineering feat, which "would prove a great attraction to tourists from all parts of the globe". In 1893 local representatives from the Barron Divisional Board met with the Railway Commissioners to discuss a proposed viewing stop on the line for the Barron Falls. The growth of tourism in Kuranda was linked to the popularity of the passenger services of the Adelaide