The Cause of the City Hall Station Disaster from the Expert's View

Is there a possibility of sudden acceleration? The Cause of the City Hall Station Disaster from the Expert's View #Hanvely #City Hall Station disaster #Sudden acceleration 📌 Replay at Home: https://tv.jtbc.co.kr/1ovely 📌 #Streaming from TVing: https://tving.onelink.me/xHqC/1vihef6r