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The statistic illustrates the cities with the longest automated metro infrastructure worldwide as of ***. In that time period, Singapore's metro system used fully automated trains on around *** kilometers of track.

Metro automation

In the past decades, the expansion of metro systems worldwide played an important role in connecting the metropolitan areas. In 2017, there were *** cities around the world that operated metro networks. In terms of ridership, infrastructure and highest number of cities with metro systems, the Asia-Pacific region was at the forefront.

As travel and transportation are proliferating in response to passengers’ demands and technological progress, the tendency of rail automation is gaining a lot of attention. In metro systems, the concept of automation refers to the interchange of responsibilities between the train driver and the train control system. Whether the transfer is only made regarding basic tasks, like preventing collisions or automatic braking (Automatic Train Protection), or to a more extensive degree, in which setting the train in motion or stopping the train is done using an Automatic Train Operation in the presence of a train driver or train attendant, the fundamental characteristic of automated metro lines is achieved at the highest state of automation - in the absence of the train driver - also known as Unattended Train Operation (UTO).

As of ***, ** percent of driverless metro lines were located in cities with over ** inhabitants. As the automation is exponentially growing, the recent forecasts estimate the total length of automated metro lines to exceed km by 2030, with the Asia Pacific region being the leading force in this expansion.