{
  "$type": "site.standard.document",
  "description": "An apparatus for determining position uncertainty of a vehicle in proximity to a wayside device, the apparatus comprises a control circuit located on-board a vehicle comprising a leading edge. The control circuit is configured to receive a wayside signal from a wayside device positioned along a…",
  "path": "/patents/1378705",
  "publishedAt": "2026-02-19T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H04W4/44",
    "Transportation IP Holdings, LLC"
  ],
  "textContent": "An apparatus for determining position uncertainty of a vehicle in proximity to a wayside device, the apparatus comprises a control circuit located on-board a vehicle comprising a leading edge. The control circuit is configured to receive a wayside signal from a wayside device positioned along a route to be traveled by the vehicle and receive a leading edge signal from a positioning system. The wayside signal represents a location of the wayside device. The leading edge signal represents a location of the leading edge of the vehicle. The control circuit is configured to determine a distance between the leading edge of the vehicle based on the leading edge signal received from the positioning system and the location of the wayside device associated with the wayside signal, calculate a position uncertainty of the leading edge of the vehicle, and determine whether the wayside device is within the position uncertainty.",
  "title": "VEHICLE CONTROL SYSTEM"
}