CityBus is one of the three major bus operators in Hong Kong, it provides both franchised and non-franchised bus services. The franchised route network serves mainly Hong Kong Island, cross-harbour routes (between Hong Kong Island and Kowloon/New Territories), Ocean Park, North Lantau (Tung Chung and Hong Kong Disneyland) and Hong Kong International Airport. The non-franchised routes serve mainly City One Shatin.

This model was released for the 10th anniversary of the Hong Kong Transport Society.

Fleet No 2265 is one of over 150 Duple Metsec bodied Tridents purchased to cater for the new airport routes following the opening of the new airport at Chek Lap Kok. It entered service on 25 February 1999. With the kind of sponsorship of Citybus Ltd., and Buspak, a Mega-Rear poster was displayed on 2265 to celebrate the 10th Anniversary of the Society.