ISO 24311:2024

International
Standard
ISO 24311
First edition
Intelligent transport systems —
Mobility integration — 'Controlled
2024-03
zone' management for urban
vehicle access restrictions (UVARs)
using C-ITS
Systèmes de transport intelligents — ITS urbains — Gestion de
"zones contrôlées" pour les UVAR à l'aide de C-ITS
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviations . 2
5 Management of controlled zones . 2
5.1 General .2
5.2 CZ manager .3
5.3 Controlled zone .3
5.4 CZ access conditions .6
5.5 CZ exemptions .7
5.6 Resultant behaviour .8
5.7 Routing paradigms .8
5.8 Controlled zone messages and data dictionary .8
5.8.1 Messages .8
5.8.2 Data dictionary .9
6 Use cases . 9
6.1 General .9
6.2 Pre-trip planning .9
6.3 Approaching a CZ boundary .9
6.4 Starting in a CZ .10
6.5 Operation in a CZ for a limited time .10
6.6 Operation in a CZ is subject to a fee .10
6.7 Access to CZ controlled with a barrier .11
7 Elements of the CZ data dictionary .11
7.1 General .11
7.2 ControlledZone .11
7.3 CzAccessConditions .11
7.4 CzAccessConditionsExemptions . 12
8 Messages and related security .13
8.1 General . 13
8.2 Applying the concept of In-Vehicle Information . 13
8.3 Applying the concept of ITS message sets .14
Annex A (normative) ASN.1 module of the CZ data dictionary .15
Annex B (normative) Service announcement for the ITS application “CZ Management” .20
Annex C (informative) LDM data objects for CZ management .21
Bibliography .22

iii
Foreword
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This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
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iv
Introduction
This document is part of a set of standards from ISO/TC 204 related to ITS Mobility Integration/Urban ITS
(U-ITS). It provides an internationalized, version of CEN/TS 17380 for management of vehicles in a “Controlled
Zone” (CZ). It is primarily designed for urban vehicle access restrictions (although it is also appropriate for
similar restriction control in any road system context). Its technical provisions are interoperable with CEN/
TS 17380. This document aims to complement CEN/TS 16157-11.
A CZ is a geographically contained physical area for which access restriction conditions are applicable for all
or some categories of vehicle or user, at all or specified times.
Management of traffic in a CZ is important for the following reasons, amongst others.
— As cities and urban complexes expand, and the significant trend of movement from rural areas to cities
continues around the world, pollution and congestion in these urban areas is becoming an increasingly
significant problem. Traffic, i.e. vehicle movements within the urban complex, is a source of pollution.
NOTE Other causes of pollution include air conditioning, central heating systems, coal and wood burning
heating, factories, etc.
— Jurisdictions can wish to control certain issues, such as movement of vehicles in cities producing traffic
congestion and overcrowding on public transport at peak periods, as this can enable better management
of traffic flow.
A CZ, also referred to as an “Urban Vehicle Access Restriction” (UVAR) zone, is a zone of enactment of
one or more traffic restrictions to adhere to a permanent or temporary regulation applicable in a defined
geographical area. These restrictions are frequently referred to as “Urban Vehicle Access Regulations”.
It is recognized that different jurisdictions will design and introduce their own CZ paradigms of different
method and construct. However, regardless of the goal to be achieved or the political objective, the basic
technical requirements for managing road traffic in a CZ are similar, and the basic methodologies are the same.
The methodology specified in this document is often referred to as “geofencing”, i.e. the creation of a virtual
geographic boundary.
Management of CZs can be achieved using data frames from the data dictionary (CZDD) specified in this
document, and data frames contained in the in-vehicle information (IVI) data dictionary specified in
ISO/TS 19321. Data frames specified in this document and in ISO/TS 19321 constitute Application Data Units.
While the CZDD is dedicated to CZs, the IVI data dictionary is of a general nature. There is no strict one-to-
one mapping between the CZDD data frames and the data frames from the IVI data dictionary related to CZ.
This document identifies two possible methods for transmitting CZ data frames:
1) a method based on the general CZ message being part of the general TMS message set (see the concept
of ITS messages and ITS message sets specified in ISO 17419, which does not require a specific
communications technology);
2) the IVI message method, which is specified in ETSI TS 103 301.

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International Standard ISO 24311:2024(en)
Intelligent transport systems
...