The Guiding Opinions on the Comprehensive Protection of Railway Signal Equipment against Lightning and Electromagnetic Compatibility points out that the lightning protection devices for signal transmission lines should be concentrated at the distribution panel, the lightning protection devices applied in parallel should be hot-swappable and plug-and-pull, and the lightning protection devices for new transmission lines should be plug-and-play.

Railway lightning protection refers to the lightning protection work carried out along the railway in order to ensure the smooth railway transportation and personal safety and ensure the normal use of railway signal equipment.