header {
  gtfs_realtime_version: "2.0"
  incrementality: FULL_DATASET
  timestamp: 1634438007
}
entity {
  id: "2024"
  alert {
    active_period {
      start: 1629259200
    }
    informed_entity {
      route_id: "19135"
    }
    informed_entity {
      route_id: "19136"
    }
    informed_entity {
      route_id: "19595"
    }
    informed_entity {
      route_id: "19596"
    }
    cause: OTHER_CAUSE
    effect: UNKNOWN_EFFECT
    url {
      translation {
        text: "https://www.p-b.com"
        language: "en"
      }
    }
    header_text {
      translation {
        text: "Federal Mask Mandate"
        language: "en"
      }
    }
    description_text {
      translation {
        text: "Per federal order, masks are required on Plymouth and Brockton buses at all times."
        language: "en"
      }
    }
  }
}