Background The World Health Organisation estimates that the health effects of air pollution result in approximately 4.2 million premature deaths annually.10 City residents experience this most significantly given the high levels of air pollution concentrated in urban areas. In addition, as populations in cities grow, many global cities are trying to effectively respond to increased traffic congestion. Consequently, the increased risks associated with the use of private cars and other vehicles have resulted in many global cities seeking transport solutions that improve both health and environmental prospects for city dwellers, as well as reducing traffic congestion. Solution In 2009, Dublin City Council launched dublinbikes, a city-wide bicycle sharing scheme to address health, environmental, and traffic congestion issues across the city. ‘Just Eat dublinbikes’ is now regarded as one of the most successful bicycle-sharing initiatives undertaken worldwide. The scheme has expanded from 450 bicycles across 40 stations in 2009 to 1,600 bicycles across more than 110 stations in 2019, each of which have been strategically distributed through out the city centre to enable easy access and optimal use (Figure 1). Figure 1: dublinbikes bicycle station. Benefits of Solution Environmental Over 27.6 million journeys have been taken on dublinbikes bicycles since the scheme was launched in 2009.11 Cycling journeys now represent over 14% of all traffic in the city centre, many of which occur through the dublinbikes bicycle network. Specifically, the scheme has attracted 67,136 annual subscribers, with 96% of individuals availing of free journeys in 2019. Since its introduction, dublinbikes has helped Dublin City Council to encourage a modal shift away from short distance car journeys, with the knock-on benefits of reduced traffic congestion, lower greenhouse gas emissions, and improvements to population health and the environment. The success of the dublinbikes scheme, when compared with other cities, can be attributed to several factors, including the fact that there are over 100 stations across the greater city centre region, a low annual fee, and the ongoing maintenance of bikes, stations, and associated equipment. 10 WORLD HEALTH ORGANISATION. 2019. Air Pollution [Online]. Available from:https://www.who.int/airpollution/en/ [Accessed 19/7/2019]. 11 DUBLINBIKES.IE. 2019. Just Eat dublinbikes - latest figures! [Online]. Available from: http://www.dublinbikes.ie/Magazine/Reports/Just-Eat-dublinbikes-latestfigures [Accessed 19/07/2019].