수인선
Korail has also constructed a new commuter rail line named Suin Line. The line opened in 2012 from Oido Station in Siheung to Songdo Station in Incheon. It was then extended in 2016, and now reaches Incheon Station where passengers can transfer to Seoul Subway Line 1. In 2017, the line will be extended from Oido Station to Suwon Station.