1. Length of high-speed railroad network worldwide from 1964 to 2020. www.statista.com/statistics/1171776/line-kilometers-of-high-speed-railroad-worldwide. Last accessed 23 May 2023
2. Highway-Rail Grade Crossing Safety and Trespass Prevention. https://railroads.dot.gov/highway-rail-crossing-and-trespasser-programs/railroad-crossing-safety-trespass. Last accessed 30 June 2023
3. SureshKumar, M., Malar, G.P., Harinisha, N., Shanmugapriya, P.: Railway accident prevention using ultrasonic sensors. In: 2022 International Conference on Power, Energy, Control and Transmission Systems (ICPECTS), pp. 1–5. IEEE. (2022)
4. Jun, W., Jiangli, W.: Design of disaster prevention and safety monitoring system for high-speed railway. China Saf. Sci. J. 28(S1), 39–45 (2018)
5. Arashika, T., Nakajima, S.: Enhancement of functions of Tokaido Shinkansen earthquake disaster prevention system. Japan Railway Transp. Rev. 43(44), 64–68 (2006)