header {
  gtfs_realtime_version: "2.0"
  incrementality: FULL_DATASET
  timestamp: 1752666019
}
entity {
  id: "12729"
  alert {
    active_period {
      start: 1741791600
    }
    informed_entity {
      route_id: "3002"
      stop_id: "757"
    }
    cause: UNKNOWN_CAUSE
    effect: UNKNOWN_EFFECT
    url {
      translation {
        text: "https://www.lrta.com/route/route-13"
        language: "en"
      }
    }
    header_text {
      translation {
        text: "Billerica mall construction"
        language: "en"
      }
    }
    description_text {
      translation {
        text: "Due to construction, we will not be going into Billerica mall."
        language: "en"
      }
    }
  }
}