ISO/TS 22741-10:2024

Technical
Specification
ISO/TS 22741-10
First edition
Intelligent transport systems —
2024-10
Roadside modules AP-DATEX data
interface —
Part 10:
Variable message signs
Systèmes de transport intelligents — Interface de données AP-
DATEX pour les modules en bord de route —
Partie 10: Panneaux à messages variables
Reference number
© ISO 2024
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ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms. 2
5 Conformance . 2
6 Physical architecture . 5
7 User needs . 6
7.1 Manage the control mode of the VMS .6
7.2 Manage the sign display .7
7.3 Monitor the sign display doors .7
7.4 Monitor the sign display mains power .7
7.5 Monitor the sign display power supplies .7
8 Requirements . 7
8.1 Message sign control mode .7
8.1.1 Message sign control mode definition .7
8.1.2 Message sign control mode data exchange requirements .7
8.1.3 Message sign control mode capabilities .8
8.2 Message library .8
8.2.1 Message library definition .8
8.2.2 Message library data exchange requirements .8
8.2.3 Message library capabilities.10
8.3 Sign display . 12
8.3.1 Sign display definition . 12
8.3.2 Sign display data exchange requirements . 12
8.4 Sign display doors . 13
8.4.1 Sign display doors definition . 13
8.4.2 Sign display doors data exchange requirements . 13
8.4.3 Sign display door capability requirements .14
8.4.4 Sign display door design constraints .14
8.5 Sign display mains power .14
8.5.1 Sign display mains power definition .14
8.5.2 Sign display mains power data exchange requirements .14
8.5.3 Sign display mains power capability requirements .14
8.5.4 Sign display mains power design constraints .14
8.6 Sign display power supplies .14
8.6.1 Sign display power supplies definition .14
8.6.2 Sign display power supplies exchange requirements . 15
8.6.3 Sign display power supplies capability requirements . 15
8.6.4 Sign display power supplies design constraints . 15
8.7 Sign display light sensors . 15
8.7.1 Sign display light sensors definition . 15
8.7.2 Sign display light sensors exchange requirements. 15
8.7.3 Sign display light sensors capability requirements . 15
8.7.4 Sign display light sensors design constraints . 15
8.8 Sign display pixels .16
8.8.1 Sign display pixels definition .16
8.8.2 Sign display pixels data exchange requirements .16
8.8.3 Sign display pixels capability .16
9 Dialogues . 16

iii
9.1 Get elemental data .16
9.2 Set elemental data .17
Annex A (normative) Data packet structures .18
Annex B (normative) Requirements traceability matrix .25
Bibliography .30

iv
Foreword
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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
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Any feedback or questions on this document should be directed to the user’s national standards body. A
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v
Introduction
0.1  Background
A variable message sign (VMS) is an electronic traffic sign installed on the roadside to provide real-time
traffic information to travellers, thereby improving their efficiency in using road traffic. A VMS is a major
physical component of the intelligent transportation system (ITS), to which it supplies information for
improvement of the safety on the road.
More VMSs are expected to be installe
...