April 6, 2018: Announcement of railway distance table[5]
June 16, 2018: Seohae Line opened with the opening of business[6]
^"부천-안산 잇는 소사원시선 개통...'23.3km 구간 33분만에'" [Opening of Sosawon City Line connecting Bucheon-Ansan... "23.3km section in 33 minutes"]. n.news.naver.com (in Korean). 2018-06-16. Retrieved 2023-07-31.
^"서해철도주식회사" [Siheung City Hall Station]. www.seohaerail.co.kr. Retrieved 2023-07-31.
^Transportation Policy Division Railway Team (2018-02-01). "소사-원시 복선전철 올해 6월 개통" [Sosa-Wonsi double track opened in June of this year]. Media Siheung (in Korean). Archived from the original on 2023-03-31. Retrieved 2018-04-06. {{cite web}}: |author= has generic name (help)CS1 maint: unfit URL (link)