1983, Mercedes-Benz supplied a two-axle 11-metre double-decker to Kowloon Motor Bus (KMB). The O305 demonstrator was registered on 4 August 1983. Following successful trials, KMB ordered another 40 in 1985, with improved frontal design and ventilation system. All the 41 buses were fitted with Alexander RH bodies. KMB later adopted a policy of acquiring 3-axle double-decker buses of similar length. Because Mercedes-Benz did not offer a 3-axle version of the O305, no more Mercedes-Benz buses were purchased by KMB. In service Initially, the first bus ran on route 105, which was new, running between Lai Chi Kok and Sheung Wan. However, Cross-Harbour Tunnel's environment was unsuitable for this model, as well as the fact that the towing of these buses by the tow trucks used by the tunnel authority could result in damage to the chassis, so entire fleet were reallocated to express routes running between Yuen Long and Tsuen Wan/Kowloon. The O305s were renowned for their speed and power, with a maximum speed of over 120 km/h reported. The buses provided services on the trunk routes in Yuen Long until the mid-1990s. With newer buses (especially those with air conditioning) available for trunk services, the Mercedes were redistributed to North District and Tai Po and served there until their retirement on 22 November 2002. These buses had a unique livery designed by KMB, but all of them had the livery returned to the standard livery of KMB non-air-conditioned buses shortly before their re-distribution. Singapore In 1982, Singapore Bus Services (SBS) acquired a single Willowbrook-bodied Mercedes Benz O305 double-deck bus in June for trial purposes. A year later, SBS also took in a second Mercedes Benz O305 double-deck demonstrator with a prototype Alexander R-type body make that was previously exhibited at the 1982 Commercial Motor Show in the UK. These buses were retired in the mid 1990s. Satisfied with the trial, SBS purchased 200 Mercedes-Benz O305 double-deck buses with Alexander-R bodywork in 1984. They featured an 11,412 cc OM 407h engine with its modular W3D 080 R gearbox. At 11.1 metres long and a licensed capacity of 109 passengers, they were the largest non-air conditioned double-decker buses in Singapore. They entered service from 1984 to 1987 and were deployed to Ang Mo Kio, Toa Payoh and Hougang bus depots throughout their lifespan. Withdrawals began in 1996 and the last units were retired by late 2001. Australia Perth Perth was the