{
  "$type": "site.standard.document",
  "description": "An estimation apparatus for a water film thickness on a road surface includes a data acquisition unit and an estimation unit. The data acquisition unit sequentially acquires a data set including driving force data representing a driving force output from a driving source of a vehicle and…",
  "path": "/patents/1391982",
  "publishedAt": "2025-07-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60W40/06",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "An estimation apparatus for a water film thickness on a road surface includes a data acquisition unit and an estimation unit. The data acquisition unit sequentially acquires a data set including driving force data representing a driving force output from a driving source of a vehicle and acceleration data representing a longitudinal acceleration of the vehicle, while the vehicle is traveling. The estimation unit estimates a thickness of a water film on a road surface on which the vehicle travels, based on a relationship between a speed of the vehicle and a fluid resistance that the vehicle receives from the water film, the flow resistance being calculated based on the data set.",
  "title": "ESTIMATION APPARATUS FOR WATER FILM THICKNESS ON ROAD SURFACE"
}