1 Scope

2 Normative references

3 Terms and definitions

3.1 distribution system rule set signer

3.2 regulation system rule set signer

4 Symbols and abbreviated terms

4.1 ADS

4.2 ARC-IT

4.3 CCMS

4.4 CV

4.5 FM

4.6 GNSS

4.7 HTML

4.8 IEC

4.9 IEEE

4.10 ISO

4.11 ITS

4.12 MCMC

4.13 METR

4.14 OBE

4.15 OEM

4.16 PID

4.17 PMR

4.18 RSE

4.19 SoS

4.20 SoSR

4.21 SRADS

4.22 TCD

4.23 TS

4.24 UN

4.25 VRU

4.26 WAIDS

5 Overview

5.1 METR purpose

5.2 METR scope

5.3 METR overview

5.3.1 Functional view

5.3.2 Physical view

5.3.2.1 Overview

5.3.2.2 Information flows with the METR SoS

5.3.2.3 Other relevant information flows

5.3.2.4 Physical objects

5.3.2.5 Component systems within the METR SoS

5.4 Assumptions and dependencies

5.4.1 Assumptions

5.4.1.1 Internet-based communications

5.4.1.2 Leverage existing standards

5.4.1.3 Supporting data

5.4.1.4 Avoiding vehicle inoperability

5.4.2 Dependencies

5.5 Traceability conventions

6 System of systems requirements

6.1 General

6.2 Input Requirements

6.2.1 Information flow: legal rules

6.2.1.1 Function

6.2.1.2 Content

6.2.1.3 Source

6.2.1.4 Causality

6.2.1.5 Constraints

6.2.1.6 Resulting action

6.2.2 Information flow: METR coordination

6.2.2.1 Function

6.2.2.2 Content

6.2.2.3 Source

6.2.2.4 Causality

6.2.2.5 Constraints

6.2.2.6 Resulting action

6.2.3 Information flow: METR discrepancy information

6.2.3.1 Function

6.2.3.2 Content

6.2.3.3 Source

6.2.3.4 Causality

6.2.3.5 Constraints

6.2.3.6 Resulting action

6.2.4 Information flow: TCD status

6.2.4.1 Function

6.2.4.2 Content

6.2.4.3 Source

6.2.4.4 Causality

6.2.4.5 Constraints

6.2.4.5.1 Change notifications

6.2.4.5.2 Query

6.2.4.5.3 Query response

6.2.4.6 Resulting action

6.3 Output requirements

6.3.1 Information flow: METR audit information

6.3.1.1 Function

6.3.1.2 Content

6.3.1.3 Destination

6.3.1.4 Causality

6.3.1.5 Constraints

6.3.1.6 Resulting action

6.3.2 Information flow: METR coordination

6.3.2.1 Function

6.3.2.2 Content

6.3.2.3 Destination

6.3.2.4 Causality

6.3.2.5 Constraints

6.3.2.6 Resulting action

6.3.3 Information flow: METR information

6.3.3.1 Function

6.3.3.2 Content

6.3.3.3 Destination

6.3.3.4 Causality

6.3.3.5 Constraints

6.3.3.5.1 Location constraint

6.3.3.5.2 Content constraint

6.3.3.5.3 Response time

6.3.3.5.4 Data quality

6.3.3.5.5 Emerging rule availability

6.3.3.6 Resulting action

6.3.4 Information flow: METR information for adaptation

6.3.4.1 Function

6.3.4.2 Content

6.3.4.3 Destination

6.3.4.4 Causality

6.3.4.5 Constraints

6.3.4.5.1 Location constraint

6.3.4.5.2 Content constraint

6.3.4.5.3 Provide rules in priority order

6.3.4.5.4 Response time

6.3.4.5.5 Verified information

6.3.4.5.6 Information delivery

6.3.4.5.7 METR information availability

6.3.4.5.8 Emerging rule availability

6.3.4.5.9 Remote emergent rules

6.3.4.6 Resulting action

6.4 Functional requirements

6.4.1 Verification of METR rules

6.4.1.1 Verify locations associated with rules

6.4.1.2 Maintain awareness of rule makers

6.4.1.3 Verify rule consistency

6.4.1.4 Ensure data quality

6.4.1.5 Ensure data resiliency

6.4.2 METR information storage requirements

6.4.2.1 Availability

6.4.2.2 Integrity

6.4.2.3 Access control for data

6.4.2.4 Ensure confidentiality of stored information

6.4.2.5 Limited data storage

6.4.2.6 Ensure data privacy

6.5 Applicable ITS station unit requirements

6.5.1 Support services

6.5.1.1 Service registration and discovery

6.5.1.1.1 Service registration

6.5.1.1.2 Service discovery

6.5.1.2 ITS system management

6.5.1.2.1 Use preferred communications

6.5.1.2.2 METR updates and patches

6.5.1.2.3 METR device management

6.5.1.2.4 Manage services

6.5.1.2.5 Resource management

6.5.1.2.6 Radio frequency regulations

6.5.1.2.7 System resiliency

6.5.1.2.8 System availability

6.5.1.2.9 Connectivity awareness

6.5.1.3 ITS security support

6.5.1.3.1 Obtain policies

6.5.1.3.2 Implement enrolment policies

6.5.1.3.3 Implement authorization policies

6.5.1.3.4 Implement misbehaviour reporting policies

6.5.1.3.5 Implement revocation policies

6.5.1.3.6 Ensure authenticated communications

6.5.1.3.7 Confidential communications

6.5.1.3.8 Access control for operations

6.5.1.3.9 Maintain change log

6.5.1.3.10 Terms of service

6.5.1.3.11 Disclose use of information

6.5.1.3.12 Maintain security certificates

6.5.2 Timeliness

6.5.2.1 Pre-announced rule completeness

6.5.2.2 Time to refresh

6.5.2.3 Emergent rule availability

6.5.3 Efficient exchange

6.5.4 Filtering

6.5.5 Open specification

6.5.6 Backwards compatibility

6.5.7 Forward compatibility

6.5.8 Language neutral

6.6 METR information requirements

6.6.1 General

6.6.2 Feature catalogue

6.6.3 METR information

6.6.3.1 Jurisdictional vocabulary

6.6.3.2 Defined area catalogue

6.6.3.3 Facility catalogue

6.6.3.4 Rule catalogue

6.6.3.5 Supporting data provider catalogue

6.6.3.6 Transport rules

6.6.4 METR information content

6.6.4.1 General

6.6.4.2 METR information identifier

6.6.4.3 METR information type

6.6.4.4 Verification level

6.6.5 METR information meta-data

6.6.5.1 General

6.6.5.2 Provenance of information

6.6.5.3 Freshness period

6.6.5.4 Confidence Metrics

6.6.5.5 Known conflicts

6.6.6 Observable transport rule attributes

6.6.6.1 General

6.6.6.2 Transport rule type

6.6.6.3 Transport rule location

6.6.6.4 Transport rule temporal characteristics

6.6.6.5 Transport rule applicability characteristics

6.6.6.6 Transport rule status

6.6.6.7 Transport rule expected implementation date

6.6.7 Additional transport rule attributes

6.6.7.1 General

6.6.7.2 Transport rule enforceability

6.6.7.3 Transport rule precedence

6.6.7.4 Transport rule priority

6.6.7.5 Transport rule signing organization

6.6.7.6 Associated supporting data

6.6.8 Auditing attributes

6.6.8.1 Transport rule translation agent

6.6.8.2 Transport rule verification agent

6.6.8.3 Transport rule signing agent

7 Actor responsibilities

7.1 Rule maker responsibilities

7.1.1 Maintain rules

7.1.2 Define location accurately

7.2 METR user responsibilities

7.2.1 Acquire rules before travelling

7.2.2 Identify necessary rule criteria

7.2.3 Obtain necessary supporting data

7.2.4 Process rules

7.2.5 Identify discrepancies

7.2.6 Mapping

7.2.7 Determine user's location

7.2.8 Determine environmental conditions

7.3 Implementer responsibilities

7.4 Auditor responsibilities

8 System-level reference architecture

8.1 Overview

8.2 Physical view

8.2.1 Mapping to functional view

8.2.2 Centralized METR information distribution service package

8.2.2.1 Overview

8.2.2.2 Physical objects

8.2.2.3 Information flows

8.2.2.4 Description

8.2.2.4.1 Information input

8.2.2.4.2 Information verification

8.2.2.4.3 Information signing

8.2.2.4.4 Physical and METR rule synchronicity

8.2.2.4.5 Internal information distribution

8.2.2.4.6 Information distribution to users

8.2.3 Localized METR information distribution

8.2.3.1 Overview

8.2.3.2 Physical objects

8.2.3.3 Information flows

8.2.3.4 Description

8.2.3.4.1 Information input

8.2.3.4.2 Information internal distribution

8.2.3.4.3 Establishing localized distribution

8.2.3.4.4 Monitoring and managing localized distribution

8.2.3.4.5 Information distribution to users

8.2.4 Discrepancy management

8.2.4.1 Overview

8.2.4.2 Physical objects

8.2.4.3 Information flows

8.2.4.4 Description

8.2.4.4.1 User reports of discrepancies

8.2.4.4.2 Discrepancy report consolidation

8.2.4.4.3 Discrepancy disposition

8.2.4.4.4 Supression of confirmed discrepancies

8.2.5 METR auditing service package

8.2.5.1 Overview

8.2.5.2 Physical objects

8.2.5.3 Information flows

8.2.5.4 Description

8.2.6 Service registration and discovery

8.2.7 Security enrolment and credentials management

8.2.8 Core authorization

8.2.9 System monitoring

8.2.10 Physical objects

8.2.10.1 Overview

8.2.10.2 Connected vehicle (CV) roadside equipment (RSE)

8.2.10.3 ITS roadway equipment (IRE)

8.2.10.4 METR consumer system

8.2.10.5 METR discrepancy handling centre

8.2.10.6 METR discrepancy handling system

8.2.10.7 METR distribution centre

8.2.10.8 METR distribution system

8.2.10.9 METR distribution vehicle

8.2.10.10 METR input device

8.2.10.11 METR regulation centre

8.2.10.12 METR regulation system

8.2.10.13 METR user device

8.2.10.14 Other METR discrepancy handling centre

8.2.10.15 Other METR distribution centre

8.2.10.16 Other METR regulation centre

8.2.10.17 Rule implementation agent

8.2.10.18 Rule signing agent

8.2.10.19 Rule translation agent

8.2.10.20 Rule verification agent

8.2.11 Information flows

8.2.11.1 consolidated discrepancy report

8.2.11.2 discrepancy report details

8.2.11.3 discrepancy suppression info

8.2.11.4 field equipment status

8.2.11.5 local METR information for consumers

8.2.11.6 METR application information

8.2.11.7 METR application status

8.2.11.8 METR audit information

8.2.11.9 METR coordination

8.2.11.10 METR device status

8.2.11.11 METR discrepancy report

8.2.11.12 METR emergent rule input

8.2.11.13 METR feedback

8.2.11.14 METR information