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The source graphic, a Windows Metafile (WMF), for the TSD can be downloaded here:
TSD
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.
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Based on the availability, traffic conditions and other factors, regional parking and traffic management plans can be developed. To support this planning, periodically the Traffic Management Subsystem may request information (parking lot data request) from the Parking Management Subsystem. The parking information returned from the Parking Management Subsystem includes information about the current or expected parking availability.
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An Information Service Provider receives information on current parking availability and fares (parking information) from the Parking Management Subsystem. This information can be requested (parking lot data request) when desired. Otherwise, it can be provided on a set schedule or as revisions warrant it.
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An Information Service Provider can make parking reservations for travelers (parking reservations request) with the Parking Management Subsystem. The Parking Management Subsystem can send a confirmation (parking lot reservation confirmation) when a reservation has been made.
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To assist in travel demand management, the Traffic Management Subsystem may request (parking demand management request) a change in parking prices or procedures. The Parking Management Subsystem may send a parking demand management response indicating when the request was or will be honored.
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The Transit Management Subsystem can coordinate with the Parking Management Subsystem also. The Transit Management Subsystem can make a parking lot data request about parking availability so as to advise transit riders where to park before boarding a transit vehicle. In response to the request, on a set schedule or as conditions warrant, the Parking Management Subsystem may respond by sending the requested parking information.
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The Parking Management Subsystem may exchange information (parking coordination) to support reconciliation of parking charges by customers that are enrolled with Other Parking systems. Additionally, parking fee information, parking availability and other parking information may be exchanged with Other Parking systems to coordinate parking operations.
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