Tokens are physical objects given to train drivers before entering a particular section of track. It's a form of railway signalling to prevent collisions.
/r/educationalgifs: For .gifs that provide knowledge! - Gifs are great at getting quick to digest info, and /r/educationalgifs strives to give you educational info in this quick to digest format. From chemical processes, to how plants work, to how machines work, /r/educationalgifs will explain many processes in the quick to see format of gifs. - August 18, 2022 - 19:42
/r/interestingasfuck: Interesting As Fuck - For anything that is InterestingAsFuck - August 18, 2022 - 19:38
/r/toolgifs: Tool Gifs - Tool, machine, and manufacturing gifs. Sometimes entertaining, always educational. - August 18, 2022 - 19:36