Solar storms could affect train safety by glitching railroad signals 

 Rare but explosive solar eruptions may cause train signals to switch the wrong way, affecting train safety, a new study finds. 

https://cdn.mos.cms.futurecdn.net/CJzZ684C7HWKqvyWNMBLUE.jpg

https://www.space.com/solar-storms-railroad-signal-train-safety