Main kinds of public transport in Hong Kong include franchiased buses, subway and public light buses, altogether accounting for over 88 percent of all passenger journeys by public transport in Hong Kong. Rail includes the major MTR lines operating in the mainly in the downtown area, which was connected to other railways such as west rail and east rail serving other districts in the New Territories. All railways accounted for the most number of average daily passenger journeys on public transport, but franchiased buses carry the highest daily average number of passengers on public transport. Kowloon Motor Bus Co. (1933) Ltd. (KMB) served most of the city and is the biggest operator for franchiased buses in Hong Kong, with five times the passenger carrying capacity of the second place holder. Regarding public light buses, there were only two operators, namely the red minibus (RMB) and the green minibus (GMB). GMB served more areas than RMB and therefore has a much higher licensed fleet and passenger carrying capacity too.
However, the system is not perfect. Since 2009, number of complaints and suggestions received by the Transport Complaints Unit (TCU) has grew from 16.861 to 27,671 in 2018. In the second quarter of 2019, taxi service was the most investigated type of public transport due to complaints filed, followed closely by KMB. Most of the complaints filed against taxis concerned refused hire, and drivers' conduct and performance. Both KMB and GMB received over 200 complaints for improper driving behaviour as well as over 300 on staff and driver performance in the same quarter for the frequency or carrying capacity, while number of complaints are relatively lower for routing, length of operation hours , provision of stops and cleanliness.