EN ISO 14823:2017

Intelligent transport systems - Graphic data dictionary (ISO 14823:2017)

ISO14823:2017 specifies a graphic data dictionary, a system of standardized codes for existing road traffic signs and pictograms used to deliver Traffic and Traveller Information (TTI). The coding system can be used in the formation of messages within intelligent transport systems.

Intelligente Verkehrsysteme - Graphisches Verzeichnis (ISO 14823:2017)

Systèmes de transport intelligents - Dictionnaire de données graphiques (ISO 14823:2017)

L'ISO 14823:2017 spécifie un dictionnaire de données graphiques, un système de codes normalisés pour les pictogrammes et les panneaux de signalisation routière existants utilisés pour les informations de trafic et l'information des voyageurs (TTI). Le système de codage peut être utilisé dans la formation des messages au sein des systèmes de transport intelligent.

Inteligentni transportni sistemi - Seznam grafičnih simbolov (ISO 14823:2017)

Ta dokument določa seznam grafičnih simbolov, sistem standardiziranih kod za obstoječe prometne znake in piktograme, ki se uporabljajo za zagotavljanje prometnih in potovalnih informacij (TTI). Sistem kodiranja se lahko uporablja pri oblikovanju sporočil znotraj inteligentnih transportnih sistemov.

General Information

• Status: Withdrawn
• Publication Date: 23-May-2017
• Withdrawal Date: 13-Apr-2025
• ICS: 35.240.60 - IT applications in transport
• ICS: 43.040.15 - Car informatics. On board computer systems
• Technical Committee: CEN/TC 278 - Road transport and traffic telematics
• Drafting Committee: CEN/TC 278/WG 4 - Traffic and traveller information (TTI)
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 22-May-2024
• Completion Date: 14-Apr-2025
• Ref Project: SIST EN ISO 14823:2017 - Intelligent transport systems - Graphic data dictionary (ISO 14823: 2017)

Relations

• Replaces: CEN ISO/TS 14823:2008 - Traffic and travel information - Messages via media independent stationary dissemination systems - Graphic data dictionary for pre-trip and in-trip information dissemination systems (ISO/TS 14823:2008)
• Effective Date: 25-Feb-2015
• Replaced By: EN ISO 14823-1:2024 - Intelligent transport systems - Graphic data dictionary - Part 1: Specification (ISO 14823-1:2024)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2017
1DGRPHãþD
SIST-TS CEN ISO/TS 14823:2009
,QWHOLJHQWQLWUDQVSRUWQLVLVWHPL6H]QDPJUDILþQLKVLPERORY,62
Intelligent transport systems - Graphic data dictionary (ISO 14823: 2017)
Intelligente Verkehrsysteme - Graphisches Verzeichnis (ISO 14823: 2017)
Systèmes de transport intelligents - Dictionnaire de données graphiques (ISO
14823:2017)
Ta slovenski standard je istoveten z: EN ISO 14823:2017
ICS:
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
43.040.15 $YWRPRELOVNDLQIRUPDWLND Car informatics. On board
9JUDMHQLUDþXQDOQLãNLVLVWHPL computer systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14823
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2017
EUROPÄISCHE NORM
ICS 35.240.60; 43.040.15 Supersedes CEN ISO/TS 14823:2008
English Version
Intelligent transport systems - Graphic data dictionary
(ISO 14823:2017)
Systèmes de transport intelligents - Dictionnaire de Intelligente Verkehrsysteme - Graphisches Verzeichnis
données graphiques (ISO 14823:2017) (ISO 14823:2017)
This European Standard was approved by CEN on 17 January 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

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, Serbia, 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
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14823:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14823:2017) 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.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2017, and conflicting national standards
shall be withdrawn at the latest by November 2017.
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 supersedes CEN ISO/TS 14823:2008.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 14823:2017 has been approved by CEN as EN ISO 14823:2017 without any modification.

INTERNATIONAL ISO
STANDARD 14823
First edition
2017-05
Intelligent transport systems —
Graphic data dictionary
Systèmes de transport intelligents — Dictionnaire de données
graphiques
Reference number
ISO 14823:2017(E)
©
ISO 2017
ISO 14823:2017(E)
© ISO 2017, 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. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 14823:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Conformance . 2
5 Abbreviated terms . 2
6 Requirements . 2
7 Structure of Graphic Data Dictionary . 3
7.1 General . 3
7.2 Country code . 3
7.3 Category code . 3
7.3.1 Categorization policy . 3
7.4 Data type of Graphic Data Dictionary . 4
8 Numbering of category code . 4
8.1 General . 4
8.2 Service category code no. 11111-11999: Traffic sign pictograms (warning) . 5
8.3 Service category code no. 12111-12999: Traffic sign pictograms (regulatory) . 9
8.4 Service category code no. 13111-13999: Traffic sign pictograms (guidance signs) .16
8.5 Service category code no. 21111-21999: Public facilities pictograms (public facilities) .21
8.6 Service category code no. 31111-31999: Ambient/road conditions pictograms
(ambient condition).23
8.7 Service category code No. 32111-32999: Ambient/road conditions pictograms
(road condition) .23
Annex A (normative) ASN.1 description of GDD .25
Annex B (normative) Attributes of GDD .28
Annex C (normative) List of directions at diverging point .34
Annex D (informative) UML diagram of GDD .39
Annex E (informative) Example GDD Data set for the U.N. and selected countries .40
Bibliography .41
ISO 14823:2017(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: w w w . i s o .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
This first edition cancels and replaces ISO/TS 14823:2008, which has been technically revised.
iv © ISO 2017 – All rights reserved

ISO 14823:2017(E)
Introduction
This document specifies a Graphic Data Dictionary (GDD) that has been developed with the intent
of creating a common basis for transmitting encoded information for existing road traffic signs and
pictograms. The coding system has been developed to be language independent, such that data that
can be interpreted, irrespective of language or regional differences. It supports Intelligent Transport
System (ITS) application such as in-vehicle signage or in-vehicle information.
This document supports
— the efficient IT-centric encoding for ITS messaging to represent specific road traffic signs and
pictograms, and
— the consistent decoding of encoded road traffic signs and pictogram data for display in ITS.
This document can support the translation of signs and pictograms with a similar purpose from the
representation used in one country to the representation used in another country.
INTERNATIONAL STANDARD ISO 14823:2017(E)
Intelligent transport systems — Graphic data dictionary
1 Scope
This document specifies a graphic data dictionary, a system of standardised codes for existing road
traffic signs and pictograms used to deliver Traffic and Traveller Information (TTI). The coding system
can be used in the formation of messages within intelligent transport systems.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 3166-1, Codes for the representation of names of countries and their subdivisions — Part 1: Country codes
ISO 8601, Data elements and interchange formats — Information interchange — Representation of dates
and times
ISO/IEC 8824-1, Abstract Syntax Notation One (ASN.1): Specification of basic notation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
attribute
code attached to the pictogram (3.4) in order to clarify the meaning of pictogram
3.2
country code
internationally recognised codes stipulated by ISO 3166-1 when referring to countries and subdivisions
of countries
3.3
graphic data dictionary
catalogue of codes for pictograms (3.4) organised systematically
3.4
pictogram
sign or icon rendered on a display of IT system such as computer or VMS to inform travellers of
information such as traffic regulations or public facilities
3.5
pictogram category code
codes assigned to the more detailed category of a pictogram (3.4) type under the service category
3.6
qualifier
parameter for an attribute (3.1) used to express the meaning of pictogram (3.4) quantitatively
ISO 14823:2017(E)
3.7
service category code
codes assigned to distinguish the service category such as a regulation or public facilities
4 Conformance
An implementation is conformant with this document when the following conditions are met.
— The implementation and transmission of graphic data shall comply with requirements listed in this
document.
— The pictogram code shall be selected from the categorized codes listed in this document.
5 Abbreviated terms
ASN.1 Abstract Syntax Notation One
ITS Intelligent Transport Systems
IT Information Technology
UML Unified Modelling Language
U.N. United Nations
VMS Variable Message Sign
6 Requirements
The intended usage of this document is to support the efficient IT-centric encoding for ITS messaging to
represent specific road traffic signs and pictograms and the consistent decoding of encoded road traffic
signs and pictogram data for display in ITS.
This document supports the translation of pictograms with similar purpose from the representation
used in one country to the representation used in another country. For illustrative purposes, it is
foreseen that this document can be used to encode information concerning a specific pictogram that
is then embedded into other information to be exchanged; if needed, on receipt of this information,
the receiver can use the contents of this document to decode the information concerning the specific
pictogram to support display across a range of dissemination systems. Examples of these dissemination
systems may include: Traffic Control Centre system user interfaces; Variable Message Signs; Public
Access Terminals; mobile personal information systems; and, on-board units.
Requirements for ITS applications which utilize the Graphic Data Dictionary are as follows.
— Graphic data shall consist country code, category code, and optionally Attribute indicator.
— Category code shall be decided based on Table 1.
— Regulatory pictogram code shall be selected from Table 3.
— Guide pictogram code shall be selected from Table 4.
— Public facilities pictogram code shall be selected from Table 5.
— Ambient/road conditions pictogram code shall be selected from Table 6.
— Integer value which indicate the direction shall be determined based on Table B.3.
— If Attribute indicator is on, graphic data shall include attributes listed in Table B.1.
2 © ISO 2017 – All rights reserved

ISO 14823:2017(E)
— When transmitting Graphic data, it shall be coded based on the ASN.1 code described in Annex A.
NOTE For transmission efficiency purposes, compression can be considered. This is outside the scope of this
document.
7 Structure of Graphic Data Dictionary
7.1 General
The Graphic Data Dictionary shall consist of country code, category code. The Graphic Data Dictionary
supports the definition of optional attributes.
7.2 Country code
Country code stipulated by ISO 3166-1 is used to distinguish the country where Graphic Data Dictionary
is provided, as the style of pictograms can be different in each country. For example, if the on-board
unit has multiple countries’ pictograms, it can render pictogram on the display in accordance to each
county code when the traveller driving through adjacent countries.
7.3 Category code
7.3.1 Categorization policy
Category code consists of a service category code and a pictogram category code. Service category has
following three types of categories: Traffic sign, Public facilities and Ambient/road conditions.
— Traffic signs are officially established pictograms in each country to control traffic using warning,
regulatory or informative sign.
— Public facilities indicates the existence of certain public facilities and their service details (e.g.
toilets, restaurants, first aid facilities, etc.).
— “Ambient/road condition” is concerned with the ambient condition of a roadway or local condition
which may affect the flow of road traffic (such as bad weather and traffic congestion).
Pictograms to be used for information display may vary from country to country, political jurisdiction
to political jurisdiction, or system operator to system operator.
ISO 14823:2017(E)
Table 1 — Category code
Category code
Service category code Pictogram category code
Category Sub category
Category number
number number
1: Danger
1–9: Danger warning
warning
1–3: Priority
2: Regulatory 4–6: Prohibition or restriction
7–9: Mandatory
1: Traffic sign
1–3: Advance direction
4: Direction
3: Informative
Serial number (1–99)
6: Lane guidance
7–9: Road/place identification
2: Public 1: Public
1–9: Public facilities and services
facilities facilities
1: Ambient
1–9: Ambient condition and nature
condition
3: Ambient/
road condition
2: Road
1–9 Road condition and nature
condition
7.4 Data type of Graphic Data Dictionary
Data type of Graphic Data Dictionary shall be as follows:
GddStructure::= SEQUENCE{
pictogramCode      SEQUENCE {
countryCode       OCTET STRING (SIZE (2)) OPTIONAL,
serviceCategoryCode   CHOICE {
trafficSignPictogram   ENUMERATED {dangerWarning, regulatory, informative,.},
publicFacilitiesPictogram   ENUMERATED {publicFacilities, .},
ambientOrRoadConditionPictogram   ENUMERATED {ambientCondition, roadCondition,.},
...},
pictogramCategoryCode  SEQUENCE {
nature           INTEGER (1.9),
serialNumber     INTEGER (0.99)
}},
attributes    GddAttributes OPTIONAL
}
GddAttributes::= SEQUENCE (SIZE(1.8),.) OF CHOICE{
dtm International Sign-applicablePeriod, –– Date/Time/Period
edt International Sign-exemptedApplicablePeriod,–– Exemption status of Date/Time/Period
dfl International Sign-directionalFlowOfLane,–– Directional Flow of Lane
ved International Sign-applicableVehicleDimensions,–– Vehicle Dimensions
spe International Sign-speedLimits,–– Speed
roi International Sign-rateOfIncline,–– Rate of Incline
dbv International Sign-distanceBetweenVehicles,–– Distance Between Vehicles
ddd International Sign-distinationInformation, –– Destination/Direction/Distance
set International Sign-section,–– Section
nol   International Sign-numberOfLane    ––Number of Lanes
}
Details of GddAttributes are described in Annex B.
8 Numbering of category code
8.1 General
The Graphic Data Dictionary specifies the Pictogram Category code of each Service Category.
4 © ISO 2017 – All rights reserved

ISO 14823:2017(E)
8.2 Service category code no. 11111-11999: Traffic sign pictograms (warning)
Pictograms falling under this category shall be used to give the road users advance warning for an adverse
road condition, any hazards to safe driving, or any other conditions to which they should take notice.
Table 2 — List of warning sign codes
Category code Category code name Definition
Service Picto-
category gram
category
11 Intersection where the pri-
ority is prescribed by the
Warning of the existence of a cross-shaped intersection
general priority rule
ahead.
(Crossroads)
Intersection where the pri-
ority is prescribed by the
112 Warning of the existence of a side road ahead.
general priority rule
(Side road right)
Intersection where the pri-
ority is prescribed by the
113 Warning of a side road ahead (Reverse type of code no. 112).
general priority rule
(Side road left)
Forked (off to upper right)
intersection where the pri- Warning of the existence of a side road. Fork (off to upper
ority is prescribed by the right) type of code no. 112.
general priority rule
Forked (off to upper left)
intersection where the pri- Warning of the existence of a side road. Fork (off to upper
ority is prescribed by the left) type of code no. 113.
general priority rule
Intersection where the pri-
ority is prescribed by the
116 Warning of a T-shaped level junction at the end of the road.
general priority rule
(T junction)
Intersection where the pri-
ority is prescribed by the
117 Warning of a Y-shaped level intersection ahead.
general priority rule
(Y intersection)
Intersection where the pri-
ority is prescribed by the
118 Warning of a staggered level intersection ahead.
general priority rule
(Staggered intersection)
119~131 Reserved for future use.
Intersection with a road
132 the users of which must Warning of a priority road at intersection.
give way
Intersection with a road
the users of which must
133 Warning of a priority road at T-shaped crossing.
give way
T-shaped crossing left
ISO 14823:2017(E)
Table 2 (continued)
Category code Category code name Definition
Service Picto-
category gram
category
Intersection with a road
the users of which must
134 Warning of a priority road at reversed T-shaped crossing.
give way
T-shaped crossing right
Intersection with a road
the users of which must
Warning of a priority road at T-shaped crossing of fork
give way
type (lower left) ahead.
T-shaped crossing of fork
type Lower left
Intersection with a road
the users of which must
Warning of a priority road at reversed T-shaped crossing
give way
of fork type (lower right) ahead.
T-shaped crossing of fork
type Lower right
137~147 Reserved for future use.
Warning of roundabout
148 Warning of a clockwise roundabout ahead.
(Clockwise)
Warning of roundabout
149 Warning of an anti-clockwise roundabout ahead.
(Anti-clockwise)
150~160 Reserved for future use.
Dangerous bend (right
161 Warning of a dangerous single curve to the right ahead.
bend)
162 Dangerous bend (left bend) Warning of a dangerous single curve to the left ahead.
163~173 Reserved for future use.
Warning of a single sharp curve (turn) to the right. A turn
is differentiated from a curve by combining all elements
174 Right turn
of speed, radius of curve, road rate of incline, intersection
angle and visible distance.
Notice of a single sharp curve (turn) to the left. A turn is
differentiated from a curve by combining all elements of
175 Left turn
speed, radius of curve, road rate of incline, intersection
angle and visible distance.
176~186 Reserved for future use.
Reverse curve (right and Warning of a combination of two curves (right and left)
left) ahead (S-bend).
Reverse curve (left and Warning of a combination of two curves (left and right)
right) ahead (S-bend).
189~210 Reserved for future use.
211 Dangerous bend (Double Warning of dangerous double or multiple bends which
bend, right) start with a right curve.
212 Dangerous bend (Double Warning of dangerous double or multiple bends which
bend, left) start with a left curve.
213~223 Reserved for future use.
224 Winding road (first to the Warning of a winding section, which start with a right
right) curve.
225 Winding road (first to the Warning of a winding section, which start with a left curve.
left)
6 © ISO 2017 – All rights reserved

ISO 14823:2017(E)
Table 2 (continued)
Category code Category code name Definition
Service Picto-
category gram
category
226~235 Reserved for future use.
236 Level crossing with gate Warning of the existence of a level railway crossing with
or barrier gates or barrier ahead.
237 Other level-crossing Warning of a level railroad crossing point without gate or
barrier ahead.
238 Intersection with a tram- Warning of a road with a tramway line ahead.
way line
239 Children (right) Warning of an area where children may exit from a school
or playground frequently pass by and cross the road from
the right side.
241 Pedestrian crossing (right) Warning of an area where pedestrians frequently pass by
and cross the road from the right side.
242 Elderly or disabled pedes- Warning of an area where elderly or disabled pedestrians
trians likely to cross ahead likely pass by and cross the road ahead.
243 Reserved for future use.
244 Warning of a crosswalk where children may exit from a
Children (left) school or playground frequently pass by and cross the
road from the left side.
245 Warning of a crosswalk where pedestrians frequently
Pedestrians crossing (left)
pass by and cross the road from the left side.
246 Pedestrian crossing ahead Warning of a crosswalk where pedestrians frequently
(left) pass by and cross the road from the left side.
247 Pedestrian crossing ahead Warning of a crosswalk where pedestrians frequently
(right) pass by and cross the road from the right side.
248~252 Reserved for future use.
253 Light signals Warning of a signal-controlled crossing ahead where sig-
nal(s) are invisible or hard to identify from a distant point.
254 Slippery road Warning of a slippery road surface that may hinder travel-
ling at normal speeds.
255 Warning of the possibility of falling rocks or the presence
Falling rocks (left)
of fallen rocks on road surface from the left side.
256 Warning of an unpaved section with loose gravel on the
Loose gravel
surface that may hinder travelling at normal speeds.
257 Dangerous shoulders Warning of a dangerous road shoulder.
258 Warning of the possibility of falling rocks or the presence
Falling rocks (right)
of fallen rocks on road surface (right).
259~267 Reserved for future use.
Warning of a bumpy section ahead that may hinder travel-
268 Uneven road
ling at normal speeds.
Warning of a road humps or series of road humps on road
269 Uneven road (hump bridge)
surface ahead that may hinder travelling at normal speeds.
Warning of a section with a large single dip on road sur-
271 Uneven road (dip)
face ahead that may hinder travelling at normal speeds.
272~282 Reserved for future use.
Traffic merging from the Warning of a merge of an inflow lane from the right into
right through traffic.
ISO 14823:2017(E)
Table 2 (continued)
Category code Category code name Definition
Service Picto-
category gram
category
Warning of a merge of an inflow lane from the left into
285 Traffic merging from left
through traffic.
286~295 Reserved for future use.
Carriageway narrows from
296 Warning that the number of lanes is reduced from the right.
the right
Carriageway narrows from
297 Warning that the number of lane is reduced from the left.
the left
298~318 Reserved for future use.
319 Carriageway narrows Warning that the width of the carriageway is reduced.
320~331 Reserved for future use.
332 Two-way traffic Warning that the approaching road is for two-way traffic.
333~345 Reserved for future use.
Warning that there is a steep hill upwards with the indi-
346 Steep ascent
cated rate of incline (%).
Warning that there is a steep dangerous hill downwards
347 Dangerous descent
with the indicated rate of incline (%).
Warning that there is a section under road construction or
348 Road works
repairs ahead.
349~360 Reserved for future use.
Warning of the possibility of sudden side wind that may
361 Cross-wind (left)
hinder travelling at normal speeds from the left side.
Warning of the existence of low flying aircraft or sudden
362 Airfield (right)
aircraft noise, (right).
Warning of the possibility of wild animals crossing the
363 Wild animal crossing (right)
road from the right hand side.
Domestic animal crossing Warning of the possibility of domestic animal crossing the
(right) road from the right hand side.
365 Cross-wind (right) Warning of the possibility of cross-wind, right.
Warning of the existence of low flying aircraft or sudden
366 Airfield (left)
aircraft noise, (left).
Wild animal crossing Warning of the possibility of wild animals, crossing from
(right) (left) the left side.
Domestic animal crossing Warning of the possibility of domestic animal crossing
(left) from the left side.
369~377 Reserved for future use.
378 Swing bridge Warning of an opening or swing bridge ahead.
Road leads to quayside or
379 Warning of a quayside or river bank ahead.
river bank
Cyclist entering or cross-
381 Warning of a cycle route from the right side.
ing (right)
Cyclist entering or cross-
382 Warning of a cycle route from the left side.
ing (left)
383~394 Reserved for future use.
Warning of a crossing where drivers must give way the
395 Give way ahead
right-of-way to the road ahead.
8 © ISO 2017 – All rights reserved

ISO 14823:2017(E)
Table 2 (continued)
Category code Category code name Definition
Service Picto-
category gram
category
Warning of a crossing where drivers must give way the
Give way at specified dis- right-of-way to the road at specified distance ahead. A
tance ahead distance to the crossing from the sign is suffixed to this
information.
Warning for an automati- Warning of an automatically deployed bollard that may
cally rising bollard rise from the road surface.
Waring for wrong way Warning of wrong way driving in the situation where driv-
driving ers may misunderstand the direction for driving.
399 Stop ahead Warning of a crossing where drivers must stop ahead.
400~410 Reserved for future use.
Level-crossings (vertically
411 Warning of a vertically long level-crossings ahead.
long)
Level-crossings (horizon-
412 Warning of a horizontally long level-crossings ahead.
tally long)
Level-crossings
Warning of a vertically long level-crossings for two or
Two or more tracks (verti-
more tracks ahead.
cally long)
Level-crossings
Warning of a horizontally long level-crossings for two or
Two or more tracks (hori-
more tracks ahead.
zontally long)
Additional signs at an ap-
Warning of an additional signs at an approaches to lev-
415 proaches to level-crossing
el-crossing or swing bridges.
or swing bridges
415~997 Reserved for future use.
998 Caution Indicates auxiliary sign to alert.
Warning of some possible danger. This sign is used in case
999 Other dangers
where no other Warning Signs are applicable.
8.3 Service category code no. 12111-12999: Traffic sign pictograms (regulatory)
Pictograms falling under this category shall be used to inform the road users of special obligations,
restrictions, or prohibitions with which they must comply. They are subdivided into the following:
a) priority signs (Pictogram category nos. 111-399);
b) prohibition or restriction signs (Pictogram category nos. 411-699);
c) mandatory signs (Pictogram category nos. 711-999).
ISO 14823:2017(E)
Table 3 — List of regulatory sign codes
Code Description
Service Pictogram Full name Definition
category category
12 Notices that drivers must give way the right-
Priority for oncoming
111 of-traffic to oncoming traffic on a narrow
traffic
section ahead.
Notice of a point on the road where passing
112 Stop
without stopping is prohibited.
Notice of a point of the road where passing
Stop specified distance without stopping is prohibited at specified
ahead distance ahead. A distance to the crossing from
the sign is suffixed to this information.
Notices that a certain lane has been assigned
Assigned lane for light
114 for the priority use of light vehicles and
vehicles or motor cycles
motor cycles.
Notices that specific goods vehicles (trucks)
115 Assigned lane for truck
must use this lane.
Assigned lane on motor- Notices that specific goods vehicles (trailers)
way for trailers must use this lane on the motorway.
Notices that drivers must give way the right-of-
117 Give way
way to the road.
118~126 Reserved for future use.
127 Assigned lane for trailers Notices that trailers must use this lane.
With flow bus and cycle
128 Notices of lane for use by buses and cycles.
lane
Exclusive lane for route Notices that a certain lane has been assigned
bus for the exclusive use of fixed-route buses.
Priority lane for route Notices that a certain lane has been assigned
131 buses and pedal cycles for the priority use of fixed-route buses and
only pedal cycles.
Notices that a certain lane has been assigned
132 Priority lane for route bus
for the priority use of fixed-route buses.
Vehicles under specified Notices that vehicle weighting over specified
weight are permitted weight passing through the road is restricted.
High occupancy vehicle Notices that a lane is used for a high occupancy
lane vehicle.
135~153 Reserved for future use.
Notice of dual carriageway ahead – notice of di-
154 Centre line of road viding of the carriageways which divides traffic
directions onto separate carriageways.
Turning restriction on a
155 multi-lane approach to an Notice of layout ahead to facilitate lane selection.
intersection
156 Stop line Notice of the point to stop.
Two-step right turn for Notice that mopeds (under 50cc) must dis-
mopeds mount for right turn.
Do not make two-step Notice that mopeds (under 50cc) are prohibited
right turn to make two-step right turn.
Two-step left turn for Notice that mopeds (under 50cc) must dis-
mopeds mount for left turn.
Do not make two-step Notice that mopeds (under 50cc) are prohibited
left turn to make two-step left turn.
10 © ISO 2017 – All rights reserved

ISO 14823:2017(E)
Table 3 (continued)
Code Description
Service Pictogram Full name Definition
category category
161~175 Reserved for future use.
Notice that any vehicles must reduce their
176 Slow down
speed in this zone.
Notice that any vehicles must reduce their
177 Yield right of way speed in this zone. A distance to the crossing
from the sign is suffixed to this information.
Notice that drivers on this road have priority
178 Priority road to go through a crossroads which they are
approaching.
179 End of priority Notice of the end of priority road.
180 Distance to end of priority Notice of the end of priority with distance to it.
Priority for oncoming
181 Notice of priority for oncoming traffic.
traffic
182~410 Reserved for future use.
No entry for all vehicles,
Notice that all vehicles/mopeds, cycles/pedes-
411 mopeds, cycles, pedestri-
trians are forbidden to enter the road.
ans
Notice that motor vehicles are forbidden to
412 No entry
enter the road.
No entry into the desig- Notice that motor vehicles are forbidden to
nated direction of the road enter in the designated direction of the road.
No vehicles crossing (ex-
Notice that vehicles crossing except for vehicles
cept for vehicles turning
414 turning left are forbidden to enter or exit a
left to enter or exit a facili-
facility off the road.
ty off the road)
Closed to all vehicles in Notice that motor vehicles are forbidden to pass
both directions through the designated section of the road.
No entry for any power
Notice that motor vehicles except two wheeled
driven vehicle except two
416 motor cycles without a side-car are forbidden to
wheeled motor cycles
pass through the designated section of the road.
without a side-car
Notice that motorcycles are forbidden to pass
417 No entry for motor cycles
through the designated section of the road.
Notice that cycles are forbidden to pass
418 No entry for cycles
through the designated section of the road.
Notice that mopeds are forbidden to pass
419 No entry for mopeds
through the designated section of the road.
Notice that goods vehicles are forbidden to pass
421 No entry for goods vehicles
through the designated section of the road.
No entry for any power
driven vehicle draw- Notice that motor vehicles with a trailer are
422 ing a trailer include a forbidden to pass through the designated sec-
semi-trailer or a single tion of the road.
axle trailer
Notice that pedestrians are forbidden to pass
423 No entry for pedestrians
through the designated section of the road.
Notice that animal-drawn vehicles are forbid-
No entry for ani-
424 den to pass through the designated section of
mal-drawn vehicles
the road.
ISO 14823:2017(E)
Table 3 (continued)
Code Description
Service Pictogram Full name Definition
category category
Notice that handcarts or other vehicles without
425 No entry for handcarts. motors except bicycles are forbidden to pass
through the designated section of the road.
Notice that agricultural motor vehicles are for-
No entry for power driven
426 bidden to pass through the designated section
agricultural vehicles
of the road.
Notice that buses are forbidden to pass through
427 No buses
the designated section of the road.
No entry for any power
Notice that power driven vehicles drawing a
driven vehicle drawing
trailer other than a semi-trailer or a single axle
429 a trailer other than a
trailer are forbidden to pass through the desig-
semi-trailer or a single
nated section of the road.
axle trailer
Notice that a horses ridden or not are forbid-
No ridden or accompa-
431 den to pass through the designated section of
nied horses
the road.
Notice that vehicles that cannot exceed spec-
No vehicles that cannot
433 ified speed are forbidden to pass through the
exceed specified speed
designated section of the road.
No entry for any pow- Notice that power driven vehicles drawing any
434 er-driven vehicle drawing trailers are forbidden to pass through the des-
a trailer ignated section of the road.
435~450 Reserved for future use.
Notice that motor vehicles whose classes are
No entry for power driven
451 specified on the sign are forbidden to pass
vehicles
through the designated section of the road.
Notice that motor or animal-drawn vehicles
No entry for power driven
whose classes are specified on the sign are for-
452 vehicles or animal-drawn
bidden to pass through the designated section
vehicles
of the road.
Notice that goods vehicles and buses are forbid-
No entry for goods vehi-
453 den to pass through the designated section of
cles and buses
the road.
No entry for bicycles, mo- Notice that bicycles, mopeds and disabled driv-
454 peds and disabled drivers’ ers’ vehicles are forbidden to pass through the
vehicles designated section of the road.
No entry for vehicles that
Notice that vehicles that are not able or allowed
are not able or allowed
to go faster than specified speed, no microcars,
to go faster than speci-
455 bikes, mopeds and disabled drivers’ mobility
fied speed, no microcars,
vehicles are forbidden to pass through the des-
bikes, mopeds and disa-
ignated section of the road.
bled drivers’ vehicles
456~474 Reserved for future use.
No entry for vehicles car-
rying more than a certain Notice that motor vehicles carrying hazardous
475 quantity of explosives goods are forbidden to pass through the desig-
or readily inflammable nated section of the road.
substances
No entry for vehicles car- Notice that vehicles carrying dangerous goods
rying dangerous goods for for which special sign plating is required are
which special sign plating forbidden to pass through the designated sec-
is required tion of the road.
12 © ISO 2017 – All rights reserved

ISO 14823:2017(E)
Table 3 (continued)
Code Description
Service Pictogram Full name Definition
category category
No entry for vehicles car-
Notice that vehicles carrying more than a
rying more than a certain
certain qua
...