SIST-TS CEN ISO/TS 14822-1:2006

SLOVENSKI STANDARD
SIST-TS CEN ISO/TS 14822-1:2006
01-julij-2006
Prometne in potovalne informacije – Splošne specifikacije za predhodne
informacije srednjega dosega preko posebnih komunikacij kratkega dosega – 1.
del: Navzdolnja povezava (ISO/TS 14822-1:2006)
Traffic and Travel Information - General specifications for medium-range pre-information
via dedicated short-range communication - Part 1: Downlink (ISO/TS 14822-1:2006)
Verkehrs- und Reiseinformation - Vorabinformation über mittlere Reichweiten via
Nahbereichskommunikation - Allegemeine Anforderungen - Teil 1: Abwärtsgerichtete
Informationen (ISO/TS 14822-1:2006)
Information sur le trafic et le transport - Spécifications générales pour la préinformation
de gamme moyenne via la communication de gamme courte dédiée - Partie 1:
«Downlink» (ISO/TS 14822-1:2006)
Ta slovenski standard je istoveten z: CEN ISO/TS 14822-1:2006
ICS:
35.240.60
43.040.15
SIST-TS CEN ISO/TS 14822-1:2006 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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TECHNICAL SPECIFICATION
CEN ISO/TS 14822-1
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
June 2006
ICS 43.040.15; 35.240.60

English Version
Traffic and Travel Information - General specifications for
medium-range pre-information via dedicated short-range
communication - Part 1: Downlink (ISO/TS 14822-1:2006)
Information sur le trafic et le transport - Spécifications Verkehrs- und Reiseinformation - Vorabinformation über
générales pour la préinformation de gamme moyenne via la mittlere Reichweiten via Nahbereichskommunikation -
communication de gamme courte dédiée - Partie 1: Allegemeine Anforderungen - Teil 1: Abwärtsgerichtete
«Downlink» (ISO/TS 14822-1:2006) Informationen (ISO/TS 14822-1:2006)
This Technical Specification (CEN/TS) was approved by CEN on 10 October 2005 for provisional application.
The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the CEN/TS can be converted into a European Standard.
CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available
promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)
until the final decision about the possible conversion of the CEN/TS into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN ISO/TS 14822-1:2006: E
worldwide for CEN national Members.

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CEN ISO/TS 14822-1:2006 (E)





Foreword



This document (CEN ISO/TS 14822-1:2006) has been prepared by Technical Committee
CEN/TC 278 "Road transport and traffic telematics", the secretariat of which is held by NEN, in
collaboration with Technical Committee ISO/TC 204 "Transport information and control
systems".

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to announce this CEN Technical Specification: Austria,
Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United
Kingdom.

2

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TECHNICAL ISO/TS
SPECIFICATION 14822-1
First edition
2006-06-01

Traffic and Travel Information — General
specifications for medium-range
pre-information via dedicated
short-range communication —
Part 1:
Downlink
Information sur le trafic et le transport — Spécifications générales pour
la préinformation de gamme moyenne via la communication de gamme
courte dédiée —
Partie 1: «Downlink»




Reference number
ISO/TS 14822-1:2006(E)
©
ISO 2006

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ISO/TS 14822-1:2006(E)
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ii © ISO 2006 – All rights reserved

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ISO/TS 14822-1:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 General. 2
3.2 Data dictionary. 3
3.3 Abbreviated terms . 7
4 Application protocol (similar to TPEG). 7
4.1 Transport level . 8
4.2 service level. 9
4.3 Application multiplex level . 10
4.4 Conventions and symbols . 12
5 Application data . 14
5.1 DSRC headers . 15
5.2 Incident information (Entity 2). 17
5.3 Static road signs mandatory (Entity 5). 18
5.4 Static road signs information (Entity 6). 20
5.5 Variable message signs (text messages) (Entity 7) . 22
5.6 Pictograms (Entity 8). 24
5.7 Speed recommendation (Entity 9). 25
5.8 Variable mandatory signs (Entity 10). 27
5.9 Weather information (Entity 11) . 29
5.10 Road condition (Entity 12) . 31
5.11 Rest area information (Entity 13) . 33
5.12 Fuel station information (Entity 14) . 34
5.13 Parking information (Entity 15) . 36
5.14 Request for emergency call information (Entity 17) . 38
5.15 Traffic conditions (Entity 20) . 40
5.16 Diversion path (Entity 21) . 41
5.17 Special vehicles (special transport) (Entity 22) . 43
5.18 Journey time (Entity 23) . 44
5.19 Roadwork (Entity 24) . 46
Bibliography . 49

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ISO/TS 14822-1:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of normative document:
— an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
— an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
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.
ISO/TS 14822-1 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 278, Road transport and traffic telematics, in collaboration with Technical Committee ISO/TC 204,
Intelligent transport systems, in accordance with the Agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
ISO/TS 14822 consists of the following parts, under the general title Traffic and Travel Information — General
specifications for medium-range pre-information via dedicated short-range communication:
⎯ Part 1: Downlink
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ISO/TS 14822-1:2006(E)
Introduction
Traffic and Travel Information may be disseminated through a number of services or means of communication,
covering static displays, portable terminals and in-vehicle equipment.
For all such services the data to be disseminated, and message structure involved in the various interfaces,
require clear definition and standard formats in order to allow competitive products to operate with any
received data. This Technical Specification focuses on the application data specification whereby data are
produced at a central location and disseminated via a network of Dedicated Short-Range Communication
(DSRC) beacons. This part of ISO 14822 addresses the data specifications for the downlink data flows
between a central location and moving vehicles passing a predetermined location. ISO 14822-2 addresses the
data specification for the uplink data flows that emanate from a moving vehicle, passing a predetermined
location, to a central location. In order to facilitate all the demands of ISO 14822-2, four bytes in the downlink
message are reserved for the beacon to insert the date/time stamp of the download. Due to the need for the
in-station to generate message CRCs, these bytes are not included in the header CRC.
Other documents are being produced by the CEN/TC 278 Working Group 4 and ISO/TC 204 Working
Group 10 to cover TTI dissemination via other communication means and services.
This Technical Specification specifies the application protocols and message structures for delivering Medium
Range Pre Information (MRPI) as accepted within CEN TC 278 for Traffic and Travel Information (TTI) via
Dedicated Short Range Communication (DSRC) devices.
DSRC has specific characteristics that differentiate this communication medium from other communication
media envisaged for traffic and traveller information, i.e. RDS-TMC (and later DAB) and GSM.
These characteristics are:
⎯ bi-directional communication, which is useful for collecting information/data from the vehicle or perhaps
selecting vehicles for a particular dialogue; and
⎯ spot communication, i.e. communications that can only take place at a precise point. This is a particularly
important characteristic. The communication zone does not exceed some 10 m or 20 m in front of the
beacon. At the time of communication, the position of the vehicle is accurately known, not only in terms of
geographical localization (i.e. comparable to what can be obtained with a GPS receiver) but in terms of
road and travel direction on this road. This localization feature is used beyond the communication zone.
By combining initial location information with information from the vehicle's speed sensor or odometer, the
position of the vehicle is known with great accuracy for several kilometres and reasonable accuracy for
tens of kilometres. Location information is updated when the vehicle passes the next beacon, probably at
the next junction. This may be a small distance in urban areas or a large distance on motorway or
expressway networks.
This part of ISO 14822 describes the application protocol, data definitions and message structures for each
MRPI service defined.
It forms part of a series of Technical Specifications defining the framework of a DSRC link in the Road
Transport Traffic Telematics (RTTT) environment.
The communication requirements of many RTTT applications can be fulfilled by DSRC. The DSRC
International Standards enable compliant communication systems to serve multiple RTTT application in
parallel.
This Technical Specification deals with the Application layer only.
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ISO/TS 14822-1:2006(E)

CEN has issued the following set of European Standards for the DSRC link:
⎯ EN 12253 Road transport and traffic telematics — Dedicated short-range communication — Physical
layer using microwave at 5,8 GHz;
⎯ EN 12795 Road transport and traffic telematics — Dedicated Short Range communication (DSRC) —
DSRC data link layer: medium access and logical link control;
⎯ EN 12834 Road transport and traffic telematics — Dedicated short range communication — Application
layer;
⎯ EN 13372 Road transport and traffic telematics — Dedicated short range communication — Profiles for
RTTT applications.
ISO has issued the following International Standard for the DSRC link:
⎯ ISO 15628 Transport information and control systems (TICS) — Dedicated Short-Range Communication
(DSRC) — DSRC application layer.
General architecture of MRPI application
For simple applications, the information transmitted defines an event or a characteristic and the distance from
the point of delivery to this event or characteristic. Information from the vehicle odometer is used to measure
the distance driven by the vehicle and modify the distance shown on the driver's display or operate alert
messages as the event is approached. The vehicle equipment need not possess geographic localization
knowledge as the information is presented relative to the position of the last beacon passed. Whilst
information will often be related to the road conditions immediately following a beacon, the architecture will
allow the transmission of data covering much larger distances (up to two hours travelling time may be
appropriate on Trans European network roads). Such information will be updated by subsequent beacons.
The bi-directional communication facility can be used to retrieve information from vehicles such as average
speed data, location of fog, heavy rain, slippery roads, etc. This information can provide valuable floating car
data for Road Network Managers and subsequently as a warning to the following traffic.
Application architecture description
From analysis carried out within the MARTA project WP2, a typical architecture is based on:
⎯ a central control system which configures information broadcast by each beacon, based on the various
sources of information available. It also retrieves information collected from vehicles at the different
beacon sites;
⎯ beacons located along the road network. Each beacon consists of a beacon controller with one or more
heads as required to provide full coverage over multi-lane roads. The controller interfaces to the
communication network;
⎯ on-board terminals located in vehicles. Equipment is composed of a tag for communication which may be
linked to a terminal supporting the application. The complexity and cost of this equipment will vary
according to the applications supported.
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ISO/TS 14822-1:2006(E)
Beacon equipment may take different forms. Complicated beacons handling dynamic information and two-way
communications with vehicles will be connected to a high-speed communications network. Less complicated
beacons handling static information (which may be changed) will be connected to low-speed networks and at
the other extreme the simplest beacons, warning perhaps of black spots or advertising some infrastructure
detail, could be stand-alone.
Information flow
This Technical Specification assumes that the DSRC supporting architecture will be as follows:
⎯ a central system configures beacons with appropriate information to be transmitted to vehicles, and
regularly polls beacons to retrieve information collected from vehicles;
⎯ each beacon broadcasts a signal to indicate its presence; when a tag is present in the communication
zone of the beacon, it indicates its presence and receives information from the beacon; in parallel, it
transmits to the beacon information stored and configured by the on-board application;
⎯ when receiving data collected from vehicles, a beacon can, where the network allows, send information
directly to the control centre, without waiting for the poll, especially if the information is related to safety;
⎯ the application running on the on-board terminal may regularly poll the tag (communication controller) to
detect new data, and to update vehicle-based information stored in the tag, ready for transmission to the
next beacon.
It is important to note that these information flows can run in parallel, i.e. for MRPI applications no real
dialogue is expected between the on-board equipment, beacons and central system; information processing is
detached from the transmission process.
On-board terminals
One key aspect of the transmission of traffic and travel information on DSRC is that different types of on-board
terminals can be envisaged, covering a wide range of end-users' prices.
The simpler terminal envisaged for MRPI is a tag developed for electronic fee collection, with limited
possibilities to warn the driver of equipped vehicles in case of incidents on the next 4 km or 5 km (i.e. with a
LED or a buzzer); the terminal could indicate two or three levels of seriousness (from incident to major
accident, for example).
A second level of terminal could consist of an after-sale terminal with simple graphic display and limited
interface with the vehicle (power, possibly speed sensor).
The third level of terminal consists of a fully integrated terminal, available as an option on the vehicle, and
possibly having connection with other communication media (GSM or RDS-TMC). In this case, more
information can be retrieved from the vehicle (activation of fog lamp, high-speed wipers, etc.).
Characteristics of applications from an HMI point of view
The information transmitted to a beacon will generally consist of an event and a relative distance from the
beacon. The information does not need to be immediately presented to the driver of equipped vehicles. The
time of presentation is related to the nature of the information as well as the location.
This feature is important, as it means that the place where the transmission takes place (i.e. the position of the
beacon) does not need to be correlated with the nature of the information transmitted (nature and location).
This means that the driving factor for the installation of the beacons is mainly the refreshment rate of the
information on board the vehicle, rather than the exact position of the beacon.
Therefore, for the driver of equipped vehicles the transmission of information can be completely transparent.
For example, information about road works can be transmitted at a beacon, with an indication of, for example,
5 km. For the benefit of the driver, there is no need to announce the information immediately, as in this case
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ISO/TS 14822-1:2006(E)
the information will not modify the route (which is not the case for a big accident) and an early warning will
have no impact on the driving attitude. On the contrary, information can be announced 1 km before the
roadwork, which in this case will have an impact on the driver of equipped vehicles (he/she should be more
alert during the following minutes and could even start to reduce his/her speed).
One characteristic of the announcements, from an HMI point of view, is that information about an event is
presented to the driver of equipped vehicles depending on the relative distance between the vehicle and the
event, which brings advantages, as compared to information which can be given through channels such as
FM radio (where the “absolute” location of the problem is given, for example “Roadwork after ROISSY toward
LILLE”).
Information is correctly filtered (information displayed is pertinent for the driver) and there is no ambiguity on
the location, especially for drivers who are not familiar with the environment and who do not know place
names.
An advantage of such a way to present the information to the driver of equipped vehicles is that the
information transmitted is self-sufficient, i.e. there is no need to have an on-board database to decode
geographic names. Geographic names can still be used for some MRPI applications (to indicate distances or
journey times to given places, for example), but due to the high data rate of the DSRC, it seems possible to
achieve such an application without on-board decoding database.
Of course, information transmitted can be language-independent, following for example the coding of events
proposed by RDS-TMC.

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TECHNICAL SPECIFICATION ISO/TS 14822-1:2006(E)

Traffic and Travel Information — General specifications for
medium-range pre-information via dedicated short-range
communication —
Part 1:
Downlink
1 Scope
This part of ISO 14822 addresses the passive DSRC issues associated with Medium Range Pre-Information
(MRPI) as applied to Traffic and Travel Information (TTI) issued from an information service provider to a
suitably equipped moving vehicle.
The AID (Application identification) No. for all MRPI Application entities is defined as No. 8 in accordance with
ISO 15628.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 4217, Codes for the representation of currencies and funds
ISO 3166-1, Codes for the representation of names of countries and their subdivisions — Part 1: Country
codes
ISO 14819-2, Traffic and Traveller Information (TTI) — TTI messages via traffic message coding — Part 2: Event
and information codes for Radio Data System — Traffic Message Channel (RDS-TMC)
1)
ISO/TS 14823 , Traffic and Travel Information — Messages via media-independent stationary dissemination
systems — Graphic data dictionary for pre-trip and in-trip information dissemination system
ISO 15628, Transport information and control systems (TICS) — Dedicated Short-Range Communication
(DSRC) — DSRC application layer

1) To be published.
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ISO/TS 14822-1:2006(E)
3 Terms, definitions and abbreviated terms
3.1 General
For the purposes of this document, the following terms and definitions apply.
3.1.1
beacon
roadside DSRC device
3.1.2
dam
message variable addressed in tens of metres
NOTE dam = deca [da] × metre [m].
3.1.3
hm
message variable addressed in hundreds of meters
NOTE hm = sector [h] × metre [m].
3.1.4
journey time
travel time plus delay
3.1.5
link (road)
length of motorway between two locations
3.1.6
link (telecom)
electronic or wireless interface between two matching devices
3.1.7
Motorway Applications for Road Traffic Advisor
MARTA
European-funded project to review similar existing projects throughout Europe with the aim to establish the
foundation of this Technical Specification
3.1.8
on-board unit
OBU
electronic equipment closely coupled with the tag that interprets the messages and presents the embodied
information to the Driver
3.1.9
pkmp
motorway network physical address in kilometres, represented in the number of kilometres at the referenced
location from the start of the designated motorway
3.1.10
road network manager
authority responsible for the smooth operation and maintenance of the motorway or trunk roads on which the
DSRC device is installed
3.1.11
route
series of links
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