ISO/TR 24315-2:2025

Technical
Report
ISO/TR 24315-2
First edition
Intelligent transport systems —
2025-10
Management of electronic traffic
regulations (METR) —
Part 2:
Operational concepts (ConOps)
Systèmes de transport intelligents — Gestion des règles de
circulation sous forme électronique —
Partie 2: Concepts opérationnels
Reference number
© ISO 2025
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Published in Switzerland
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Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 1
5 Current system or situation . 2
5.1 General .2
5.2 Background, objectives and scope .3
5.2.1 Background .3
5.2.2 Objectives .3
5.2.3 Scope of application .4
5.3 Operational policies and constraints .4
5.3.1 Policies .4
5.3.2 Constraints .5
5.4 Description of the current situation .5
5.4.1 General .5
5.4.2 Terminators .6
5.4.3 Processes .9
5.4.4 Data flows .10
5.4.5 Additional stakeholders .10
5.4.6 Data details . 12
5.5 Modes of operation for the current situation . 15
5.6 User classes and other involved personnel .16
5.6.1 General .16
5.6.2 Users subject to rules .16
5.6.3 Entities that establish rules.17
5.6.4 Third party entities .18
5.7 Support environment . . .18
5.7.1 General .18
5.7.2 Sources of support .19
6 Justification for and nature of changes . .20
6.1 General . 20
6.2 Justification of changes . 20
6.2.1 General . 20
6.2.2 Evolving transport environment . 20
6.2.3 Discrepancy reports .21
6.3 User need statements . 23
6.3.1 Trustworthiness needs. 23
6.3.2 User needs . 35
6.3.3 Rule maker needs . 44
6.3.4 Third party needs: auditing . 48
6.4 Priorities . 48
6.5 Deferred user needs . . 48
6.5.1 General . 48
6.5.2 User needs deferred to a future release . 49
6.5.3 User needs considered but not included . 49
6.6 Assumptions and constraints . 49
6.6.1 Assumptions . 49
6.6.2 Constraints .51
7 Concepts for the proposed system .52
7.1 General .52

iii
7.2 Background, objectives, and scope .52
7.3 Operational policies and constraints .52
7.3.1 Policies .52
7.3.2 Constraints .52
7.4 Description of the proposed system .52
7.4.1 Overview .52
7.4.2 Terminators . 54
7.4.3 Processes . 54
7.4.4 Data flows . 56
7.5 Modes of operation .57
7.5.1 General .57
7.5.2 Normal mode .57
7.5.3 Degraded mode . 58
7.5.4 Fallback mode . 58
7.6 User classes and other involved personnel . 58
7.7 Support environment . .
...