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GET
/
transit
/
StopMonitoring
Real-time Stop Monitoring
curl --request GET \
  --url 'https://api.511.org/transit/StopMonitoring?api_key='
{
  "Siri": {
    "ServiceDelivery": {
      "StopMonitoringDelivery": {
        "MonitoredStopVisit": [
          {
            "RecordedAtTime": "2026-03-25T12:01:00-07:00",
            "MonitoringRef": "18079",
            "MonitoredVehicleJourney": {
              "LineRef": "49",
              "MonitoredCall": {
                "ExpectedArrivalTime": "2026-03-25T12:04:00-07:00",
                "AimedArrivalTime": "2026-03-25T12:02:00-07:00"
              }
            }
          }
        ]
      }
    }
  }
}

Authorizations

​
api_key
string
query
required

511.org token query parameter.

Query Parameters

​
format
enum<string>
default:json

Desired response format. JSON is the default when omitted.

Available options:
json,
xml
​
agency
string
required

Agency identifier for SIRI and GTFS-RT endpoints.

​
stopcode
string

Current transit page casing for stop filtering. The PDF section 2.10 shows 'stopCode'.

Response

Realtime monitored stop visits in SIRI JSON or XML.

The response is of type object.