{
  "updaters": [
    {
      "type": "stop-time-updater",
      "frequency": "30s",
      "url": "http://app:8811/rt/tripupdates.pb",
      "feedId": "1"
    },
    {
      "type": "real-time-alerts",
      "frequency": "60s",
      "url": "http://app:8811/rt/alerts.pb",
      "feedId": "1"
    },
    {
      "type": "vehicle-positions",
      "frequency": "20s",
      "url": "http://app:8811/rt/vehicles.pb",
      "feedId": "1"
    }
  ]
}