AD2-ITS Data Warehouse (Service Package*)

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 Archive Data Management subsystem (ADMS) can maintain a current map database for geocoding archived data (if appropriate) by submitting a map update request either on a one-time basis for a subscription of updates from a Map Update Provider which will send map updates on the agreed upon schedule.
   
   
2. The ADMS can request or subscribe (archive requests) to operational data from one or more of the subsystems or terminators in the table in the AD1 diagram (___ archive data or transportation weather information). On receipt of submitted operational data, the ADMS can confirm to the source that the data was received (archive status).
   
   
3. An Archive Data Administrator can set operational parameters on the archive (archive management requests) and the ADMS will display the appropriate archive management data to the administrator. These parameters can include how much and how long to store operational data, how to aggregate the data (e.g. averaging or sampling and at what age - for example older data may be sampled more sparsely than more current data). The Administrator can issue user IDs and passwords to limit access to certain types or classes of data, and may determine what data will be stored in an encrypted state in order to control access. The Archive Data Administrator corresponds to the librarian of the archive in our analogy, where the librarian is responsible for the storage organization of the library data contents, and is responsible for determining and administering access to the data.
   
   
4. A special interface is available to allow the archive to control and collect monitoring data directly from Roadway Subsystem (RS) monitoring equipment. This is in support of operations to collect data that will be used for federal HPMS (Highway Performance Monitoring System) reporting requirements or any ADMS that is setup with direct collection and monitoring of traffic sensors. ADMS sends data collection and monitoring control messages to the RS to manage how the data is collected. RS will send, either periodically or upon request from ADMS, the data collected from the field, e.g. traffic counts, classification data, speed data, etc. (roadside archive data). Alternatively, Vehicle Subsystems (VS) using on-board equipment to transmit probe information to the RS. This probe archive data will then be forwarded from the RS to the ADMS as part of its data collection.
   
   
5. A special interface is provided for standard government reports (such as, but not limited to, HPMS reports). To satisfy these requirements, ADMS will transmit the government reporting system data either asynchronously or upon some schedule established previously by the administrator. The Government Reporting Systems will acknowledge that the data was received and whether there were any issues with the data (government reporting data receipt).
   
   
6. An interface is provided for Archived Data User Systems, to request and then receive archived data products. These User Systems could include end-users requesting information from the archive for personal research or other data collection systems external to the Intelligent Transportation System (ITS). It could also include other operational ITS center subsystems, i.e. Traffic Management Subsystem (TMS) and Transit Management Subsystem (TRMS), that will use the data to enhance their planning and scheduling activities. In each case, the User Systems, TMS and TRMS will make a request (archived data product requests) for a type of data including how and when it should be delivered and ADMS will send the requested archived data products. This interface supports one-time requests or subscription for multiple/periodic updates.
   
   
7. The Archive Data User Systems may request customized or predefined archive data analysis and reports to be generated (archive analysis requests), with the option of payment to the archive (using a separate Financial Institution interface for payment reconciliation) for these services (payment request). An archive request confirmation message can be sent to the User to indicate that a request has been accepted and is being processed (or payment is being processed). Archive analysis results are returned to the user systems.