MC04-Weather Information Processing and Distribution Transaction Set Diagram



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The following discusses how the National ITS Architecture provides the transportation service described by this service package. Each numbered item describes the operation of that portion of the service package identified with the corresponding number on the transaction set diagram.

  1. The Weather Service is a primary source of weather information, both current observations and forecasts. In the National ITS Architecture, weather information is provided by the Weather Service to the following center subsystems:

    • Emergency Management

    • Information Service Provider

    • Maintenance and Construction Management

    • Traffic Management

    • Transit Management

  2. The Surface Transportation Weather Service provides tailored weather products to the transportation community. Because the products could be tailored to different transportation entities, each of the previous five centers sends a transportation weather information request to identify the type of information they require. The Surface Transportation Weather Service would then send transportation weather information including observations and forecasts tailored to the recipient’s needs.

  3. The MCMS takes its sensor inputs (from the MC03 Road Weather Data Collection market package) along with the inputs above to create road conditions and weather information that are made available by road maintenance operations to other transportation system operators (road weather information). The MCMS can also receive road weather information from maintenance operations centers in adjacent geographic areas (the Other MCM terminator). In addition, on an asynchronous basis the MCMS provides road facility and treatment information that supports road conditions forecasts (road data) to the Surface Transportation Weather Service to assist that entity in creating tailored weather products.

  4. On an asynchronous basis, the weather information collected by the TMS is provided to the Traffic Operations Personnel (traffic operator data), who exert control over the collection and processing of the data (traffic operator inputs).

  5. On an asynchronous basis, the weather information collected by the MCMS is provided to the Maintenance and Construction Center Personnel (maint and constr operations information presentation), who exert control over the collection and processing of the data (maint and constr center personnel inputs).