METR Discrepancy Handling System --> METR Regulation System:
consolidated discrepancy report

Definitions

consolidated discrepancy report (Information Flow): This flow allows the METR Discrepancy Handling Center to send consolidated discrepancy reports to the intended destination. The consolidated reports are sent when conditions, as defined by local policies, are met (e.g., a sufficient number of reports have been received). The destination might be another METR Discrepancy Handing Center (e.g., an OEM sending data to a governmental handling system) but eventually, the consolidated reports are sent to the relevant METR Regulation Center.

METR Discrepancy Handling System (Source Physical Object): The 'METR Discrepancy Handling System' receives reports of discrepancies in rules from METR User Systems. It will perform a numerical analysis of discrepancy count vs. time for any given rule, and when warranted, report to the METR Regulation Center those rules with sufficient discrepancy reports to justify further investigation. It is identified as a separate center to provide a level of anonymity for the user that reports the issue. The METR Discrepancy Handling Center may register its availability as a service, and its associated cyber location information, with the Object Registration and Discovery System (ORDS).

METR Regulation System (Destination Physical Object): The 'METR Regulation System' creates and maintains electronic versions of traffic regulations for eventual consumption by traveler systems and other interested parties. Once approved, each rule is signed and traceable to a specific Rule-Maker. Depending on local policies and division of labor, the METR Regulation Center might need to coordinate with a METR Verification Center, a Maintenance and Construction Management System, and METR Discrepancy Handling Centers.

Included In

This Triple is in the following Service Packages:

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This triple is associated with the following Functional Objects:

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This Triple is described by the following Functional View Data Flows:

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This Triple has the following triple relationships:

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Communication Solutions

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

METR: Discrepancy Reporting Requirements - OMG DDS

Solution Description

This solution is used within Canada and the U.S.. It combines standards associated with METR: Discrepancy Reporting Requirements with those for OMG DDS. The METR: Discrepancy Reporting Requirements standards include upper-layer standards required to exchange traffic regulation discrepancies with a discrepancy handling center. The OMG DDS standards include lower-layer standards that support secure data sharing and command operations between remote devices.

ITS Application Entity
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OMG DDS
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OMG DDS-Security
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IETF RFC 768
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Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Characteristic Value
Time Context Recent
Spatial Context Regional
Acknowledgement True
Cardinality Unicast
Initiator Source
Authenticable True
Encrypt True


Interoperability Description
Regional Interoperability throughout the geopolitical region is highly desirable, but if implemented differently in different transportation management jurisdictions, significant benefits will still accrue in each jurisdiction. Regardless, this Information Flow Triple should be implemented consistently within a transportation jurisdiction (i.e., the scope of a regional architecture).

Security

Information Flow Security
  Confidentiality Integrity Availability
Rating Moderate Moderate Moderate
Basis Discrepancy-handling flows may contain a significant amount of discrepancy reporting information, which could imply behavior in the field, actions of rules-agents and other activities that could be leveraged by bad actors. Information contained in this flow will be used to assess the accuracy of existing rules; this will require some process that strips out incorrect reports, but the number of incorrect reports should be minimized to reduce undue processing. Backoffice discrepancy handling flows should be basically reliable, else the discrepancy handling system will have difficulty functioning, which in turn could lead to negative safety or other impacts in the field.


Security Characteristics Value
Authenticable True
Encrypt True