Cleaning the High Speed Trains This may be needed if the High-Speed Rail uses the same systems as used in several foreign nations such as Japan.  The wires are overhead and corrode from weather exposure, and thus need to be inspected by helicopter and cleaned by specially trained technicians that understand the dangers of doing that job. The train cars {carriages} also need cleaning on a schedule, as does the track system and all other aspects of the system's high-speed rail. Index of ... High Speed Cleaning Teams Identification of High-Speed Rail Ballast Flight Risk Factors Japan Fights Crowds of Crows Railway Electric Power Feeding Systems Overhead line