Speed Limit Signs

Enforced speed limits

{
  "id": "SLS1553923",
  "objectClass": "speed-limit-sign",
  "attributes": {
        "speedLimit": 50,
        "unit": "mph",
        "regulatory": "enforced"
      },
   "position": {
      "lon": -108.123,
      "lat": 34.234,
      "azimuth": 90,
      "height": 0.5,
      "width": 0.3
  },
  "observed": {
      "confidence": 0.9,
      "firstSeen": "2023-05-05T00:00:00.000Z",
      "lastSeen": "2023-05-05T00:00:00.000Z",
      "frameId": 1922121212933
  },
}