The MAN 24.3x0 HOCLNR-NL was a series of low-floor 3-axle double-decker bus chassis built for right-hand drive markets, as indicated by the R in the designation. It was designed by MAN Truck & Bus, a subsidiary of Triton based on Munich. Unlike other low-entry double-decker buses in Hong Kong, there are steps in the lower deck aisle after the rear exit. The 24.3x0 was available as both the 24.310 and 24.350, with internal codes MAN A59 and MAN A57 respectively. For the type designation 24.310, 24 means that the bus has the maximum gross weight of , whilst 310 means that the maximum power of the engine is ; for 24.350, the 350 means that the maximum power of the engine is . Hong Kong Citybus In December 1997, Citybus introduced a solitary Australian-built MAN 24.350 bus with Volgren CR221LD bodywork. This bus remained unique in Citybus fleet and was withdrawn in 2015 due to engine failure and lack of spare parts. Cancelled order In 1998, Citybus ordered a number of MAN 24.310 buses with Berkhof/Volgren CR223LD bodywork after the trial of its MAN 24.350. However, in early 1999, Transport Department of Hong Kong set quota on the number of buses owned by Citybus, and therefore the order was cancelled involuntarily. At that time, construction of 32 Berkhof-bodied buses and 2 Volgren CR223LD-bodied buses had been completed, so MAN had to find buyers for these buses. Finally, one Berkhof-bodied bus was retained by MAN for testing, and the others were sold for operations in Hong Kong. Kwoon Chung Motors In 1999, Kwoon Chung Motors, a coach and rental bus operator in Hong Kong, took one of the Berkhof-bodied MAN 24.310 that had been built for Citybus and the bus entered service in 2000. The bus was primarily used on worker services (for staff working at some of the companies at the Hong Kong International Airport). But during rush hours, it could be seen allocated to New Lantao Bus, (a subsidiary of Kwoon Chung), routes in Tung Chung. This bus was retired and stored in July 2015. Kowloon Motor Bus Kowloon Motor Bus took delivery of the other 32 MAN 24.310 buses from the Citybus order. The 30 buses with Berkhof bodywork entered service in 2000. The 2 buses with Volgren CR223LD bodywork, which had been stored in Volgren's facility at Perth, Australia, entered service in 2002. Later, KMB ordered 15