1. Shanghai Metro (2018). Situation Statement, Weibo. Available online: https://m.weibo.cn/status/4321444228011645.
2. Electrical and Mechanical Services Department (2019). Investigation Report on Incident of the New Signalling System Testing on MTR Tsuen Wan Line.
3. BBC News (2021). Taiwan Train Crash: Site Boss Bailed Amid Grief 51 Deaths, BBC News. Available online: https://www.bbc.com/news/world-asia-56622336.
4. Hua Xia (2023). At Least 1 Dead, 16 Wounded in Mexico City Metro Crash, Xinhua Net. Available online: https://english.news.cn/20230108/dc3c5d19c3624e2190ba22c72b1c86bf/c.html.
5. Commission, I.E. (2009). Railway Applications—Automated Urban Guided Transport (AUGT)—Safety Requirements, IEC.