Intelligent transport systems - Cooperative systems - State of the art of Local Dynamic Maps concepts (ISO/TR 17424:2015)

ISO/TR 17424:2015 surveys the status of Local Dynamic Map (LDM) regarding architecture, implementation, and standardization efforts. It summarizes the high level architectures of the most important implementations and compares it with the CEN/ETSI/ISO ITS-Station architecture.
ISO/TR 17424:2015 derives out of the application needs the requirements for a global LDM concept in terms of functionality, technical and legal aspects.
A gap analysis with existing specification and standards will be performed and recommendations towards SDOs and decision bodies will be made.
ISO/TR 17424:2015 does not give any decision on how or whether one of the solutions described is commercially feasible to be considered as an implementable offer to the user.
ISO/TR 17424:2015 considers the most important documents and research projects to the knowledge of the authors, but does not claim to be complete or free of any mistakes.

Intelligente Transportsysteme - Kooperative Systeme - Aktuelle Technologie für lokale dynamische Kartenkonzepte (ISO/TR 17424:2015)

Systèmes intelligents de transport - Systèmes coopératifs - État des connaissances des cartes dynamiques locales (ISO/TR 17424:2015)

Inteligentni transportni sistemi - Kooperativni sistemi - Stanje poznavanja lokalnih dinamičnih zemljevidov (ISO/TR 17424:2015)

TR 17424 podaja informacije o stanju poznavanja lokalnih dinamičnih zemljevidov (LDM), pripravljenih v okviru različnih raziskovalnih in razvojnih projektov v Evropi, na Japonskem ter v ZDA. Predstavlja različne arhitekture, uvedbe, funkcionalne bloke LDM in povezane standardizacijske dejavnosti. TR 17424 predlaga ukrepe za prihodnje standardizacijske dejavnosti in potrebe po usklajevanju. – Opredelitev LDM (na podlagi projektov EU SAFESPOT, CVIS in COMeSafety) – Teza: LDM je podsistem, ki se nahaja v okviru postaje ITS. – LDM običajno sestavlja več elementov ali funkcij: o upravljanje LDM, vključno s sinhronizacijo in posodobitvijo o skladiščenje podatkov LDM o varnost LDM o celovitost vsebine LDM o svetovalec za politiko LDM (zasebnost) o arbiter LDM/pregledovanje, razvrščanje po prednosti o vstopne točke storitve LDM/dostop do podatkov o posrednik LDM (deljeno upravljanje podatkov) Osnutek tehničnega poročila je pripravljen na predložitev v glasovanje glede pripomb DTR.

General Information

Status
Published
Publication Date
12-May-2015
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
13-May-2015
Completion Date
13-May-2015

Buy Standard

Technical report
-TP CEN ISO/TR 17424:2015 - BARVE
English language
38 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST-TP CEN ISO/TR 17424:2015
01-september-2015

,QWHOLJHQWQLWUDQVSRUWQLVLVWHPL.RRSHUDWLYQLVLVWHPL6WDQMHSR]QDYDQMDORNDOQLK

GLQDPLþQLK]HPOMHYLGRY ,6275

Intelligent transport systems - Cooperative systems - State of the art of Local Dynamic

Maps concepts (ISO/TR 17424:2015)

Intelligente Transportsysteme - Kooperative Systeme - Aktuelle Technologie für lokale

dynamische Kartenkonzepte (ISO/TR 17424:2015)

Systèmes intelligents de transport - Systèmes coopératifs - État des connaissances des

cartes dynamiques locales (ISO/TR 17424:2015)
Ta slovenski standard je istoveten z: CEN ISO/TR 17424:2015
ICS:
03.220.01 Transport na splošno Transport in general
35.240.60 Uporabniške rešitve IT v IT applications in transport
transportu in trgovini and trade
SIST-TP CEN ISO/TR 17424:2015 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST-TP CEN ISO/TR 17424:2015
---------------------- Page: 2 ----------------------
SIST-TP CEN ISO/TR 17424:2015
TECHNICAL REPORT
CEN ISO/TR 17424
RAPPORT TECHNIQUE
TECHNISCHER BERICHT
May 2015
ICS 35.240.60; 03.220.01
English Version
Intelligent transport systems - Cooperative systems - State of the
art of Local Dynamic Maps concepts (ISO/TR 17424:2015)

Systèmes intelligents de transport - Systèmes coopératifs - Intelligente Transportsysteme - Kooperative Systeme -

État des connaissances des cartes dynamiques locales Aktuelle Technologie für lokale dynamische Kartenkonzepte

(ISO/TR 17424:2015) (ISO/TR 17424:2015)

This Technical Report was approved by CEN on 12 April 2015. It has been drawn up by the Technical Committee CEN/TC 278.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TR 17424:2015 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST-TP CEN ISO/TR 17424:2015
CEN ISO/TR 17424:2015 (E)
Contents Page

Foreword ..............................................................................................................................................................3

---------------------- Page: 4 ----------------------
SIST-TP CEN ISO/TR 17424:2015
CEN ISO/TR 17424:2015 (E)
Foreword

This document (CEN ISO/TR 17424:2015) has been prepared by Technical Committee ISO/TC 204

“Intelligent transport systems” in collaboration with Technical Committee CEN/TC 278 “Intelligent transport

systems” the secretariat of which is held by NEN.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission and

the European Free Trade Association.
Endorsement notice

The text of ISO/TR 17424:2015 has been approved by CEN as CEN ISO/TR 17424:2015 without any

modification.
---------------------- Page: 5 ----------------------
SIST-TP CEN ISO/TR 17424:2015
---------------------- Page: 6 ----------------------
SIST-TP CEN ISO/TR 17424:2015
TECHNICAL ISO/TR
REPORT 17424
First edition
2015-05-01
Intelligent transport systems —
Cooperative systems — State of the art
of Local Dynamic Maps concepts
Systèmes intelligents de transport — Systèmes coopératifs — État des
connaissances des cartes dynamiques locales
Reference number
ISO/TR 17424:2015(E)
ISO 2015
---------------------- Page: 7 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 8 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Abbreviated terms .............................................................................................................................................................................................. 1

5 Content and structure ..................................................................................................................................................................................... 2

5.1 Required LDM Elements (subsystems or functions) .............................................................................................. 3

5.1.1 Data elements and protocols ................................................................................................................................. 4

5.2 LDM: state of the art ........................................................................................................................................................................... 6

5.2.1 Proposed LDM Architectures ................................................................................................................................ 6

5.3 Parts and functions not fully specified or not yet available ..........................................................................25

5.3.1 Considerations on Geo-location referencing ........................................................................................25

5.3.2 Considerations on Data Privacy .......................................................................................................................25

5.3.3 Considerations on Data Security .....................................................................................................................26

5.3.4 Considerations on data Integrity ....................................................................................................................26

5.3.5 Considerations on decision rules for conflicting data content ..............................................27

5.3.6 Considerations on LDM Synchronization ................................................................................................27

5.4 Recommendations ............................................................................................................................................................................27

Bibliography .............................................................................................................................................................................................................................29

© ISO 2015 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 204, Intelligent transport systems.

iv © ISO 2015 – All rights reserved
---------------------- Page: 10 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
Introduction

Intelligent transport systems (ITS) means to apply information and communication technologies (ICT)

to the transport sector. ITS can create clear benefits in terms of transport efficiency, sustainability,

safety and security.

To take full advantage of the benefits that ICT-based systems and applications can bring to the transport

sector, it is necessary to ensure interoperability among the different systems.

Cooperative systems are ITS (Cooperative ITS) systems based on vehicle-to-vehicle (V2V), vehicle-to-

infrastructure (V2I, I2V) and infrastructure-to-infrastructure (I2I) communications for the exchange

of information. Cooperative systems have the potential to further increase the benefits of ITS services

and applications.

Cooperative ITS is a subset of the overall ITS that communicates and shares information between

ITS stations to give advice or facilitate actions with the objective of improving safety, sustainability,

efficiency and comfort beyond the scope of stand-alone systems.

The European Commission issued Mandate M/453 [6] [7] to invite the European Standardization

Organizations (ESOs) (CEN, CENELEC and ETSI) to prepare a coherent set of standards, specifications and

guidelines to support the European Community’s wide implementation and deployment of Cooperative

intelligent transport systems (Cooperative ITS).

CEN and ETSI have formally accepted the Mandate and will develop standards (EN) and technical

specifications and guidelines requested as far as possible within the timescale required in the Mandate.

(see Reference [7])

Annex C of Reference [7] proposes a “List of minimum set of standards and allocation of responsibility

between CEN and ETSI – Mandate M/453”.

ISO/TC 204 decided in 2009 to join CEN’s efforts and to create a new working group (WG 18) under the

Vienna agreement. This Technical Report is considered by non-European NSOs as important enough to

justify having it under ISO lead.

Different ITS stations (vehicle, nomadic, roadside and central) exchange geographically located

information, which is of importance for the different cooperative applications (standards to be developed

under the responsibility of CEN and ISO).

This Technical Report delivers information about the status at the time of publication of the Local

Dynamic Map (LDM) concepts as they have been developed in the different R&D projects in Europe,

Japan and the USA.

It presents different architectures, implementations, LDM functional blocks and the related

standardization activities. It can identify gaps, lacks and inconsistencies between Cooperative

ITS Reference Station Architecture and existing implementations. It proposes actions for future

standardization activities and harmonization needs. Activities within ISO/TC 204 WG 3 and ETSI TC ITS

at the time of publication are considered.

This Technical Report falls within the agreed scope of work of ISO/TC 204 WG18 and CEN TC 278 WG16.

© ISO 2015 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST-TP CEN ISO/TR 17424:2015
---------------------- Page: 12 ----------------------
SIST-TP CEN ISO/TR 17424:2015
TECHNICAL REPORT ISO/TR 17424:2015(E)
Intelligent transport systems — Cooperative systems —
State of the art of Local Dynamic Maps concepts
1 Scope

This Technical Report surveys the status of Local Dynamic Map (LDM) regarding architecture,

implementation, and standardization efforts. It summarizes the high level architectures of the most

important implementations and compares it with the CEN/ETSI/ISO ITS-Station architecture.

This Technical Report derives out of the application needs the requirements for a global LDM concept in

terms of functionality, technical and legal aspects.

A gap analysis with existing specification and standards will be performed and recommendations

towards SDOs and decision bodies will be made.

This Technical Report does not give any decision on how or whether one of the solutions described is

commercially feasible to be considered as an implementable offer to the user.

This Technical Report considers the most important documents and research projects to the knowledge

of the authors, but does not claim to be complete or free of any mistakes.
2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable to its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO/TR 24532, Intelligent transport systems — Systems architecture, taxonomy and terminology — Using

CORBA (Common Object Request Broker Architecture) in ITS standards, data registries and data dictionaries

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO/TR 24532 and the following apply.

3.1
Local Dynamic Map
LDM

conceptual data store which is embedded in an ITS station containing topographical, positional and

status information within a dedicated geographic area of interest, relevant to ITS stations

Note 1 to entry: The LDM is supported by service functions, which ensure the accessibility, integrity, and security.

4 Abbreviated terms
For the purposes of this document, the following abbreviated terms apply.
API Application Program Interface
BSA Basic Set of Applications
CA Cooperative Awareness
CAM Cooperative Awareness Message
© ISO 2015 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
CN Cooperative Navigation
COOPERS COOPERative systems for intelligent road Safety
CS Communities Service
CSM Cooperative Speed Management
CVIS Cooperative Vehicle-Infrastructure Systems
DENM Decentralized Environmental Notification Message
FA Facilities/Applications
ICT Information and Communication Technology
ITS Intelligent Transport System
IRIS Intelligent Cooperative Intersection Safety system
LBS Location-Based Service
LCM Life Cycle Management
LDM Local Dynamic Map
MF Management/Facilities
NF Networking and Transport/Facilities
POI Point of Interest
RHW Road Hazard Warning
RSU Road Side Unit
SAP Service Access Point
SF Security/Facilities
TPEG Transport Protocol Experts Group
V2I Vehicle to Infrastructure
V2V Vehicle to Vehicle
WLAN Wireless Local Area Network
5 Content and structure

How a LDM is built, which elements are needed and how they are implemented, strongly depends on the

role of an ITS station.
2 © ISO 2015 – All rights reserved
---------------------- Page: 14 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
Figure 1 — Viewpoints in respect of the LDM
5.1 Required LDM Elements (subsystems or functions)
A typical LDM consists of following subsystems:
— LDM management, including
— means for synchronizing content in-between LDMs,
— means for updating content, and
— means for removing outdated data elements;
— LDM Data Storage

— data storage, which covers small to huge implementations supporting personnel devices,

infrastructure systems, in-vehicle platforms, service providers and management centres;

— LDM Security
— means for data security;
— LDM Content Integrity
— means for maintaining data integrity and quality, and
© ISO 2015 – All rights reserved 3
---------------------- Page: 15 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
— decision rules on conflicting data;
— LDM Privacy Policy Advisor

— rules on how to deal with privacy-affected static, quasi-static and dynamic content;

— LDM Arbiter/Screening, prioritizing

— means for putting multiple queries according their priority to the data storage and retrieving

the response;
— LDM SAPs/Data access

— interface for writing elements into and retrieving elements from the data storage;

— LDM Broker
— shared data management for multiple application access.

All the data elements and their attributes put in and out the LDM have to comply with the definition

given in the LDM Data dictionary.
5.1.1 Data elements and protocols

The input to the LDM may come from many sources likely using different protocols. Messages originating

from vehicles, for instance CAM and DENM, use a highly condensed protocol format to keep channel

blocking at a minimum. There is only a minimum of additional information contained in the message

itself to decide on reliability and confidence. Other input sources are radio broadcasts (RDS, DAB, DVB,

DMB) using, e.g. TMC or TPEG protocol, traffic centre using DATEX/DATEX2 or HTML-based application

data exchange format and so on. If data from different sources addressing the same event have a

contradicting meaning, the following additional decision-relevant information has to be considered to

get the most accurate information:
— Who is the issuer of the information?
— How and when was the information generated?
— What is the accuracy of the information?
— How was the information transmitted?
— Where and under which condition is the information valid?
5.1.1.1 TPEG in detail
Detailed information on TPEG is provided in [21].

TPEG (Transport Protocol Experts Group) specifications[9] offer a method for transmitting multimodal

traffic and travel information, regardless of client type, location or required delivery channel (e.g. DAB,

HD radio, Internet, DVB-x, DMB, GPRS, Wi-Fi …). Language independence has also been a prime principle

in the design.
5.1.1.1.1 How does TPEG work?

In contrast to TMC (event-based road traffic information), TPEG refers to a whole set or toolkit of

specifications, for offering a wider range of services to a wider range of users and devices.

TPEG services are defined in a modular way and can therefore vary in a number of “directions”:

— application, e.g. Road Traffic Messages, Public Transport Information or Parking Information.

Each Application is uniquely identified by an Application ID (AID) that are allocated by the TPEG

Application Working Group (TAWG) of TISA;
4 © ISO 2015 – All rights reserved
---------------------- Page: 16 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)
— transmission method, e.g. DAB digital radio, DMB, Internet;

— location referencing method, e.g. table-based (using for example TMC location tables) or on-the-

fly (using a method that gives a location reference that works with or without maps and does not

require a look-up table to decode in the receiver);

— device, e.g. intended for vehicle navigation systems, Internet browsers or mobile devices;

— conditional access: whether data are sent for free or only to users/devices who have somehow

established the right to receive it, e.g. by paying a subscription. Encryption of TPEG data are possible

by means of Standardised Encryption Indicators, which are allocated by the TPEG Application

Working Group (TAWG) of TISA.

The term “profile” is used to define a combination of the above which, together, make up what one might

think of as a single TPEG service. For example:

— displaying traffic incidents on a map graphic and supporting re-routing or route optimization;

— displaying public transport status information on a cell phone screen.
5.1.1.1.2 TPEG Service IDs

Any TPEG-service is uniquely identified worldwide by a TPEG Service ID (SID) consisting of three

elements called SID-A, SID-B, SID-C, as described in ISO/TS 18234-2. TISA, as worldwide registrar for

TPEG SID, is responsible for allocating and maintaining TPEG Service IDs in a Registry to ensure a

worldwide unique identification of a TPEG service.

Each TPEG Application is assigned a unique number called the Application Identifier (AID) which is

standardized in ISO/TS 18234-1. An AID is defined whenever a new application is developed. The AIDs

allocated at the time of publication of this Technical Report are the following (see Table 1):

Table 1 — TPEG AID table
AID Number (Hex) Application Abbreviated term
0 Service and Network Information application SNI
1 Road Traffic Message application RTM
2 Public Transport Information application PTI
3 Parking Information application PKI
4 Congestion and Travel Time application CTT
5 Traffic Event Compacy application TEC
6 Conditional Access Information application CAI
7 Traffic Flow and Prediction TFP
8 Fuel Price Information FPI
5.1.1.2 DATEX/DATEX2
Detailed Information on DATEX/DATEX2 are provided in[22]
5.1.1.2.1 Background

Delivering European Transport Policy in line with the ITS Action Plan of the European Commission

requires coordination of traffic management and development of seamless pan-European services. With

the aim to support sustainable mobility in Europe, the European Commission has been supporting the

development of information exchange mainly between the actors of the road traffic management domain

for a number of years. In the road sector, the DATEX standard was developed for information exchange

between traffic management centres, traffic information centres and service providers and constitutes

© ISO 2015 – All rights reserved 5
---------------------- Page: 17 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)

the reference for applications that have been developed in the past 10 years. At the time of publication of

this Technical Report, the second generation DATEX II specification also pushes the door wide open for

all actors in the traffic and travel information sector.

Much investment has been made in Europe, both in traffic control and information centres over the

last decade and also in a quantum shift in the monitoring of the trans-European transport network

(TEN-T). This is in line with delivering the objectives of the EasyWay programme [17] for safer roads,

reduced congestion and a better environment. Collecting information is only part of the story; to make

the most of the investment data needs to be exchanged both with other centres and, in a more recent

development, with those developing pan-European services provided directly to road users. DATEX was

originally designed and developed as a traffic and travel data exchange mechanism by a European task

force set up to standardize the interface between traffic control and information centres. With the new

generation DATEX II, it has become the reference for all applications requiring access to dynamic traffic

and travel-related information in Europe.
5.1.1.2.2 Organization: SG - TG - User Forum

The DATEX II specifications are maintained at the time of publication by a stakeholder organization that

has been created under the EasyWay programme. In EasyWay, DATEX II is included in a set of European

Studies (ES) that deal with pan-European consensus forming and harmonization. DATEX II is covered by

European Study 5, chaired by Germany at the time of publication.
ES5 has been structured into two working groups:

— The Strategic Group (SG) steers the work programme of ES5 and reports to the EasyWay Steering

Committee and the European Commission. SG itself takes care of liaison with other relevant

stakeholder groups and outreach activities, for instance the organization of a DATEX II User Forum.

Technical day-to-day work is assigned by the SG to a dedicated technical working group.

— The Technical Group (TG) receives its terms of reference from the SG, and also reports back on its

progress. The TG consists of technical experts that deal with the day-to-day management of the

DATEX II specifications, which includes user support and user feedback via this website, but also all

technical work required in preparation of the DATEX II standardization. TG therefore works in close

cooperation with CEN/TC 278/WG 8.

The organizational structure presented is seen as a temporary solution during the life of the EasyWay

programme. In parallel to the work programme described above, the SG and the TG work together on

defining a long term, self-sustained organizational structure for the time after EasyWay.

5.1.1.2.3 Standardization

DATEX II is intended to become a multi-part standard, maintained by CEN/TC 278 (see www.

itsstandards.eu). The first three parts of the CEN DATEX II series [i.e. CEN/TS 16157 (all parts)] deal

with the most mature and widely used parts of DATEX II: the modelling methodology (called Context

and framework) as CEN/TS 16157-1, Location referencing as CEN/TS 16157-2 and the most widely used

DATEX publication for traffic information messages (called Situation publication) as CEN/TS 16157-3.

A fourth part of the CEN DATEX II series, VMS publications, is being proposed for standardization to

CEN/TC 278. More parts are to follow, including other data publications for example measured data and

elaborated data.
5.2 LDM: state of the art
5.2.1 Proposed LDM Architectures
5.2.1.1 SAFESPOT
See also Specification[12]
6 © ISO 2015 – All rights reserved
---------------------- Page: 18 ----------------------
SIST-TP CEN ISO/TR 17424:2015
ISO/TR 17424:2015(E)

Enabled by advances in communication technology, cooperative systems are seen as the next logical

step beyond autonomous driving assistance systems, for safety and comfort applications for road

traffic. In cooperative systems, autonomous information from stored digital maps and from vehicle

sensors is supplemented with cooperative information received via radio links from other vehicles and

the infrastructure.

A new spatial database concept, named local dynamic map, reflecting all relevant static, temporary

and dynamic information in the perception vicinity of a stationary object (road side unit) or moving

object (vehicles and other road users), is considered as a core element of cooperative systems. The local

dynamic map is a highly dynamic data store with a relation to the road network, which enables storage

and updating of objects including type, position and other characteristics, and retrieval of selected

information for further processing and situation analysis, such as calculation of trajectories, and detection

of hazardous obstacles and potential conflicts with other road users. If the object that maintains the

local dynamic map is moving, the map window is moving as well, with the object as its centre point. The

local dynamic map is constructed on top of a digital map database for ITS applications, and conceived

as a four layer structure with increasing dynamics, and specified as a logical object model, which may

serve as the basis for specifying the API, and for its actual implementation. The four layers represent,

respectively: a) the static (semi-permanent) digital map database; b) similar static information that is

not (yet) incorporated in the digital map database; c) temporary and dynamic information (such as

weather and traffic conditions); and d) dynamic and highly dynamic information concerning moving

objects (vehicles, vulnerable road users and animals). This Technical Report provides th

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.