Musk reposted a tweet stating that the Greek government is using Starlink to support its railway safety system in order to prevent train collisions. According to the quoted original post, the system has installed monitoring equipment on 134 locomotives. Combined with GNSS-HEPOS positioning, it achieves train positioning with an accuracy of up to 5 centimeters, updates positions every second, and receives automated collision risk alerts through a 24/7 control center. This enables operators to intervene in a timely manner on route segments including mountainous areas without mobile signal coverage.