With the reform, the bus network has been fully reorganised into a trunk-feeder system, and buses are now classified into five types, which are serial-numbered and colour-coded to make it easier for users to recognise them. Traffic accidents have been halved during the last decade and citizens’ satisfaction has improved by 32% since the city government introduced an evaluation and incentive scheme (Seoul, 2016d). First, the city seeks to improve citizens’ accessibility to public transport. The Seoul Urban Railway Comprehensive Enhancement Strategy proposes to build two additional subway lines to connect the districts that are currently outside the catchment area.