ISO/TS 24315-3:2025
(Main)Intelligent transport systems — Management of electronic traffic regulations (METR) — Part 3: System of systems requirements and architecture (SoSR)
Intelligent transport systems — Management of electronic traffic regulations (METR) — Part 3: System of systems requirements and architecture (SoSR)
This document defines the end-to-end requirements for the entire management of electronic traffic regulations (METR) system of systems (SoS). This document introduces the reference architecture used by subsequent parts. NOTE The operational concept for METR is provided in ISO/TR 24315-2.[ REF Reference_ref_13 \r \h 9 08D0C9EA79F9BACE118C8200AA004BA90B0200000008000000110000005200650066006500720065006E00630065005F007200650066005F00310033000000 ]
Systèmes de transport intelligents — Gestion des règles de circulation sous forme électronique — Partie 3: Exigences et architecture pour le système des systèmes
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ISO/TS 24315-3
First edition
Intelligent transport systems —
2025-10
Management of electronic traffic
regulations (METR) —
Part 3:
System of systems requirements
and architecture (SoSR)
Systèmes de transport intelligents — Gestion des règles de
circulation sous forme électronique —
Partie 3: Exigences et architecture pour le système des systèmes
Reference number
© ISO 2025
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Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 1
5 Overview . 2
5.1 METR purpose .2
5.2 METR scope .3
5.3 Management of electronic traffic regulations (METR) overview .3
5.3.1 Functional view .3
5.3.2 Physical view .4
5.4 Assumptions and dependencies .8
5.4.1 Assumptions .8
5.4.2 Dependencies .9
5.5 Traceability conventions.9
5.6 Naming conventions .11
5.7 Traceability and conformance .11
6 System of systems requirements .11
6.1 General .11
6.2 Input requirements . 12
6.2.1 Information flow: legal rules . 12
6.2.2 Information flow: coordination . 12
6.2.3 Information flow: discrepancy information . 13
6.2.4 Information flow: traffic control devices (TCD) status .14
6.3 Output requirements . 15
6.3.1 Information flow: audit information . 15
6.3.2 Information flow: coordination .16
6.3.3 Information flow: information.16
6.3.4 Information flow: information for adaptation .18
6.4 Functional requirements . . 20
6.4.1 Verification of METR rules . 20
6.4.2 METR information storage requirements . 20
6.5 Applicable intelligent transport system (ITS) station unit requirements .21
6.5.1 Support services .21
6.5.2 Timeliness . 23
6.5.3 Filtering . 23
6.5.4 Open specification . 23
6.5.5 Backwards compatibility .24
6.5.6 Forward compatibility .24
6.5.7 Language neutral .24
6.6 Information requirements .24
6.6.1 General .24
6.6.2 Feature catalogue .24
6.6.3 METR information .24
6.6.4 Information content . 25
6.6.5 Information meta-data . 26
6.6.6 Observable transport rule attributes . 26
6.6.7 Additional transport rule attributes .27
6.6.8 Auditing attributes . 28
6.7 Efficient exchange constraint . 28
7 Actor responsibilities .28
iii
7.1 Rule maker responsibilities . 28
7.1.1 Maintain rules . 28
7.1.2 Define location accurately . 28
7.2 User responsibilities . 28
7.2.1 Acquire rules before travelling. 28
7.2.2 Identify necessary rule criteria . 28
7.2.3 Obtain necessary supporting data . 28
7.2.4 Process rules . 29
7.2.5 Identify discrepancies . 29
7.2.6 Mapping . 29
7.2.7 Determine user's location . 29
7.2.8 Determine environmental conditions . 29
7.3 Implementer responsibilities . 29
7.4 Auditor responsibilities . 29
8 System-level reference architecture .29
8.1 Overview . 29
8.2 Physical view . 30
8.2.1 Mapping to functional view .
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