Slow speed control

{
  "id": "MLC-T-IND-005379",
  "term": "Slow speed control",
  "field": "Industrial and trades",
  "definition": "An electronic control fitted to a locomotive that holds it at a very low, steady speed so that a train can be loaded or unloaded while still moving, as with merry-go-round coal trains in Britain. The driver selects a crawl speed, and the control varies traction power against load to hold it. Speeds range from about half a mile per hour up to about three miles per hour.",
  "subject": "Industrial supplies, equipment, and components",
  "translations": {
    "de": "Slow Speed Control",
    "es": "control de baja velocidad",
    "fr": "contrôle de vitesse lente"
  },
  "url": "https://mlchart.com/terminology/industrial/slow-speed-control/"
}