Tokenless block

{
  "id": "MLC-T-IND-006051",
  "term": "Tokenless block",
  "field": "Industrial and trades",
  "definition": "An electrical railway signaling system for managing train movements on single-line sections without using physical tokens. It uses track circuits and block instruments in signal boxes at either end of the section to indicate whether the line is occupied or clear. Unlike token-based systems, authority to proceed is granted via a signal aspect, not by possession of a physical object.",
  "subject": "Rail equipment",
  "translations": {
    "de": "tokenless block",
    "es": "bloque sin token",
    "fr": "block sans jeton"
  },
  "url": "https://mlchart.com/terminology/industrial/tokenless-block/"
}