EN ISO 14819-2:2021

SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN ISO 14819-2:2014
Inteligentni transportni sistemi - Sporočila prometnih in potovalnih informacij prek
kodiranih prometnih sporočil - 2. del: Kode za dogodke in informacije za radijski
podatkovni sistem (RDS) - Prometni informacijski kanal (RDS-TMC), ki uporablja
sistem ALERT-C (ISO 14819-2:2021)
Intelligent transport systems - Traffic and travel information messages via traffic message
coding - Part 2: Event and information codes for Radio Data System - Traffic Message
Channel (RDS-TMC) using ALERT-C (ISO 14819-2:2021)
Intelligente Transportsysteme - Verkehrs- und Reiseinformationen über
Verkehrsmeldungskodierung - Teil 2: Ereignis- und Informationscodes für den digitalen
Radiokanal für Verkehrsmeldungen (RDS-TMC) unter Nutzung von ALERT-C (ISO
14819-2:2021)
Systèmes intelligents de transport - Informations sur le trafic et le tourisme via le codage
de messages sur le trafic - Partie 2: Codes d'événements et d'informations pour le
système de radiodiffusion de données (RDS) - Canal de messages d'informations sur le
trafic (RDS-TMC) avec ALERT-C (ISO 14819-2:2021)
Ta slovenski standard je istoveten z: EN ISO 14819-2:2021
ICS:
03.220.20 Cestni transport Road transport
35.240.60 Uporabniške rešitve IT v IT applications in transport
prometu
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14819-2
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 03.220.20; 35.240.60 Supersedes EN ISO 14819-2:2013
English Version
Intelligent transport systems - Traffic and travel
information messages via traffic message coding - Part 2:
Event and information codes for Radio Data System-Traffic
Message Channel (RDS-TMC) using ALERT-C (ISO 14819-
2:2021)
Systèmes de transport intelligents - Informations sur le Intelligente Transportsysteme - Verkehrs- und
trafic et les déplacements via le codage de messages Reiseinformationen über Verkehrsmeldungskodierung
sur le trafic - Partie 2 : Codes d'évènements et - Teil 2: Ereignis- und Informationscodes für den
d'informations pour le système de radiodiffusion de digitalen Radiokanal für Verkehrsmeldungen (RDS-
données - canal de messages d'informations sur le TMC) unter Nutzung von ALERT-C (ISO 14819-2:2021)
trafic (RDS-TMC) avec Alert-C (ISO 14819-2:2021)
This European Standard was approved by CEN on 30 July 2020.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14819-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14819-2:2021) 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 September 2021, and conflicting national standards
shall be withdrawn at the latest by September 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14819-2:2013.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 14819-2:2021 has been approved by CEN as EN ISO 14819-2:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 14819-2
Third edition
2021-02
Intelligent transport systems — Traffic
and travel information messages via
traffic message coding —
Part 2:
Event and information codes for Radio
Data System-Traffic Message Channel
(RDS-TMC) using ALERT-C
Systèmes de transport intelligents — Informations sur le trafic et les
déplacements via le codage de messages sur le trafic —
Partie 2: Codes d'évènements et d'informations pour le système de
radiodiffusion de données - canal de messages d'informations sur le
trafic (RDS-TMC) avec Alert-C
Reference number
ISO 14819-2:2021(E)
©
ISO 2021
ISO 14819-2:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Event and Information codes for Traffic Message Channel . 1
4.1 Event List. 1
4.1.1 Explanatory notes . 1
4.1.2 List of quantifiers . 4
4.1.3 Event list . . 5
4.2 Supplementary information .48
4.2.1 Explanatory notes .48
4.2.2 Supplementary information list .49
4.3 Forecast event list .56
4.3.1 Explanatory notes .56
4.3.2 Forecast event list .56
Annex A (informative) GB-English with non-metric units - List of quantifiers .62
Annex B (informative) GB-English with non-metric units - Event List .64
Annex C (informative) GB-English - Supplementary information list .106
Annex D (informative) GB-English - Forecast event list .114
Bibliography .119
ISO 14819-2:2021(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems, in
collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/
TC 278, Intelligent transport systems, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 14819-2:2013) which has been
technically revised. The main changes compared to the previous edition are as follows:
— in the Event List, the column “P” for ‘phased-out codes’ has been added;
— a small number of additional events have been added to the Event List;
— a small number of additional events have been added to the Supplementary List;
— wording has been improved for greater clarity;
— several minor typographical errors have been corrected.
A list of all parts in the ISO 14819 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Introduction
This document is the second part of the ISO 14819 series of standards, covering the ‘ALERT-C’ protocol
which describes how traffic messages are coded for transmission as an ‘Open Data Application’ over the
Radio Data System (RDS), a sub-carrier on FM radio transmissions. A complete understanding of RDS-
TMC is only possible by reading this document (Part 2) together with the other parts of the ISO 14819
series of standards, which are:
— ISO 14819-1, which describes the ALERT-C protocol concept and relationship with the RDS standards,
IEC 62106 (all parts);
— ISO 14819-3, which describes ways in which position and places are coded using ALERT-C; and
— ISO 14819-6, which describes how messages may be optionally encrypted for conditional access.
This document contains the special meta-language which technical experts agreed would be the sole
source for all coded descriptions used in RDS-TMC. This methodology has allowed agreement over
important details for the many hundreds of event phrases so included, even though subtle linguistic
differences were perceived and allowed for in terms of end-user presentation.
INTERNATIONAL STANDARD ISO 14819-2:2021(E)
Intelligent transport systems — Traffic and travel
information messages via traffic message coding —
Part 2:
Event and information codes for Radio Data System-Traffic
Message Channel (RDS-TMC) using ALERT-C
1 Scope
ISO 14819-1 describes the ALERT-C protocol concept and message structure used to achieve densely
coded messages to be carried in the RDS-TMC feature. This document specifies the ‘Events List’ to be
used in coding those messages.
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 14819-1, Intelligent transport systems — Traffic and Travel information messages via traffic message
coding — Part 1: Coding Protocol for Radio Data System-Traffic Message Channel (RDS-TMC) using ALERT-C
IEC 62106 (all parts), Specification of the Radio Data System (RDS) for VHF/FM sound broadcasting in the
frequency range from 64,0 to 108,0 MHz
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Event and Information codes for Traffic Message Channel
4.1 Event List
4.1.1 Explanatory notes
a) The event list is divided into update classes, indicated by the various sections. These update classes
are used for terminal message management, as indicated in ISO 14819-1:2021, 6.1. The event list is
shown in the format of a database.
NOTE The first column of the Event list in 4.1.3 (Table 2) shows line numbers to assist reading and use
of the database.
b) The second column gives a ‘technical language’ (so-called CEN-English) description of the event
code, the code of which is shown in the third field. Appropriate authorities of each country have
been responsible for the exact descriptions in other languages, in conformity with the definitions
ISO 14819-2:2021(E)
given in the DATEX Data Dictionary. This document uses the English language and metric units by
default, but is essentially both language- and unit-independent, as presentation to the end-user’s
preference is made by the client device: the recommended conversions from metric to non-metric
(i.e. imperial) units are given in Annexes A, B, C and D.
This ensures precise definitions and use of the event codes in the transmission layer. Individual
terminal implementations may handle these (translated) descriptions with some flexibility in
order to allow a more effective presentation, but without altering the meaning.
c) The third column gives the decimal equivalent of the actual binary event code to be transmitted
(see ISO 14819-1:2021, 5.3.2). These codes are purely internal to the RDS-TMC system and should
not be used for referencing events or composing messages in other operator systems. Undefined
codes are reserved for future system additions.
d) The fourth column, "N", is the nature of the event. The general meaning of the codes is as follows:
(blank) - Information
F - Forecast
S - Silent: no message shall be presented to the end-user
e) The fifth column, "Q", is the quantifier field, containing the reference numbers of quantifiers listed
in the table at the end of the event list. The position of the quantifier in the event, plus in some
cases some accompanying words, is shown by (.Q.) within the text. Use of these quantifiers is
usually optional. However, a few event messages have no meaning without the quantifier. The use
of quantifiers is described in ISO 14819-1:2021, 5.5.6.
f) The sixth column, "T", is the duration type. "D" indicates "dynamic" events of short duration and "L"
indicates longer-lasting events (see ISO 14819-1:2021, 5.4.7). If this code is bracketed ( ), or if the
time-of-day quantifier (no.7) is actually used in the message, no duration shall be presented to the
user. In these cases, the duration indicates persistence, used for message management only.
g) The seventh column, "D", is the default directionality of the event. "1" indicates that one direction
of traffic is normally affected by the event. "2" indicates that both directions of traffic are normally
affected by the event. TMC terminals can use this field to help to determine which events to present
to the driver and how to present them.
h) The eighth column, "U", is the default terminal urgency, with values "X" for extremely urgent, "U"
for urgent, and blank for normal events (see ISO 14819-1:2021, 5.4.5).
i) The ninth column, "C", gives a numerical representation of the update class to which the event
belongs. Update classes 1…31 are listed in 4.1.3. Update classes 32…39 are exclusively for events of
the forecast nature "F" with duration type L or (L). These are in subclause 4.3.2. Other than events
of type S, these classes contain no other events.
j) The tenth column, “P”, if it contains a code, indicates an event that experience has shown can be
misinterpreted. As such, this event may be deprecated in due course. The code in this cell indicates
the code that should be used in preference, as it better represents the event.
k) The final column, "R", gives phrase codes (references) for use by TMC operators. An event may be
a single phrase event, or a combination of two or more phrases. Each phrase is allocated a phrase
code consisting of at least of a single code letter (A - Z) and a code number (1 - 999). Single phrase
events are indicated by a single code letter and a one or two digit number (e.g. A1 - A99); expected
events are indicated by the normal phrase code followed by "E" (e.g. A1E), and where a risk of
danger exists by a following "D" (e.g. G6D); events with quantifiers can have three digits (e.g. A101).
Longer lasting forecasts are indicated by the letter "F".
The Event List also contains several predefined combinations of single phrase events to make
better use of the available channel capacity. These combined events are indicated by the combined
codes of the constituent phrases (e.g. B11.C1).
2 © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Note that although the event lists (Main, Forecast and Supplementary) together contain around
1,700 messages, as explained above, most are composed by combining two or more single phrase
messages, so in practice there are only a few hundred unique phrases that need to be stored by the
terminal, which when combined form the longer composite messages.
Note also that the phrases used in combined events are not always word for word identical to the
corresponding phrases used in the single events. Binding words or small changes to the wording
are sometimes necessary.
The code letters are not related to the update classes, but have the following meaning:
A: Level of Service
B: Incidents/Accidents
C: Closures
D: Lane Restrictions
E: Roadworks
F: Obstruction Hazards
G: Road Conditions
H: Weather
J: Winds
L: Environment
M: Temperature
P: Activities
Q: Delays/Cancellations
R: Dangerous Vehicles
S: Exceptional Loads
T: Traffic Equipment Status
U: Traffic Regulations
X: Parking
Y: Information
Z: Indicates phrases from the List of Supplementary Information (see 4.2.1).
The phrase codes are not normative, but are only given as additional information about the contents
of a given event and should be helpful when implementing software.
l) The Event List is comprehensive and contains many messages that may be rarely or even never used
by particular service providers. In general, each service provider will use a sub-set of the complete
list, according to their needs and the needs of the road network for which they are providing
information.
Although individual service providers may use only a sub-set of messages, terminal manufacturers
are encouraged to support all messages in the event list to ensure messages from any service
provider can be presented to the end-user.
ISO 14819-2:2021(E)
4.1.2 List of quantifiers
Table 1 — List of quantifiers
No Meaning Range Examples
Value Binary code
0 n (small number) ( n = 1 , 2 , . . . , 28 ; 1 00001
30, 32, .36); 2 00010
36 00000
1 N (number) (N = 1, 2, 3, 4; 1 00001
2 00010
10, 20, . 100; 10 00101
20 00110
150, 200, . 1000) 150 01111
200 10000
1000 00000
2 less than V metres (V = 10, 20, . 300) 10 00001
20 00010
300 11110
3 P percent (P = 0, 5, . 100) 0 00001
5 00010
100 10101
4 of up to S km/h (S = 5, 10, . 160) 5 00001
10 00010
160 00000
5 of up to M minutes (M = 5, 10, . 50; 5 00001
10 00010
or H hours H = 1, 2, . 12; 1 01011
2 01100
18, 24, . 72) 18 10111
24 11000
72 00000
6 T degrees Celsius (T = -50, -49, . +50) -50 0000 0001
-49 0000 0010
+50 0110 0101
7 H time-of-day (H = 00.00, 00.10, . 23.50) 00.00 0000 0001
00.10 0000 0010
23.50 1000 1111
8 W tonnes (W = 0.1, 0.2, . 10.0; 0.1 0000 0001
0.2 0000 0010
10.5, 11.0, . 60.0) 10.5 0110 0101
11.0 0110 0110
60.0 1100 1000
9 L metres (L = 0.1, 0.2, . 10.0; 0.1 0000 0001
0.2 0000 0010
10.5, 11.0, . 80.0) 10.5 0110 0101
11.0 0110 0110
80.0 1111 0000
10 of up to D millimetres (D = 1, 2, . 255) 1 0000 0001
2 0000 0010
255 1111 1111
11 M MHz (as defined in ISO 14819-1, IEC 87.6 0000 0001
62106 [all parts]) 87.7 0000 0010
107.9 1100 1100
4 © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Table 1 (continued)
No Meaning Range Examples
Value Binary code
12 k kHz (as defined in ISO 14819-1, IEC ITU Regions
62106 [all parts]) 1 & 3
153 0000 0001
162 0000 0010
279 0000 1111
531 0001 0000
540 0001 0001
1602 1000 0111
ITU Region 2
530 0001 0000
540 0001 0001
1610 0111 1100
Quantifiers 0…5 use a 5-bit data field.
The first value uses binary code 00001 and the second value uses 00010. The values increment
according to the steps shown. Where binary code 11111 has been reached the final (highest) value uses
code 00000.
Quantifiers 6…12 use an 8-bit data field.
The first value uses binary code 0000 0001 and the second value uses 0000 0010. The values increment
according to the steps shown.
4.1.3 Event list
NOTE The first column shows line numbers to assist reading of the database.
Table 2 — Event list
Line Text (metric units) Code N Q T D U C P R
1 EVENT LIST
3 1. LEVEL OF SERVICE
5 traffic problem 1 D 1 U 1 A50
6 stationary traffic 101 D 1 U 1 A1
7 stationary traffic for 1 km 102 D 1 U 1 A101
8 stationary traffic for 2 km 103 D 1 U 1 A102
9 stationary traffic for 3 km 129 D 1 U 1 A103
10 stationary traffic for 4 km 104 D 1 U 1 A104
11 stationary traffic for 6 km 105 D 1 U 1 A106
12 stationary traffic for 10 km 106 D 1 U 1 A110
13 risk of stationary traffic 130 D 1 U 1 A1D
14 queuing traffic (with average speeds Q) 108 4 D 1 U 1 A2
queuing traffic for 1 km (with average 109 4 D 1 U 1 A201
15 speeds Q)
queuing traffic for 2 km (with average 110 4 D 1 U 1 A202
16 speeds Q)
ISO 14819-2:2021(E)
Table 2 (continued)
Line Text (metric units) Code N Q T D U C P R
queuing traffic for 3 km (with average 131 4 D 1 U 1 A203
17 speeds Q)
queuing traffic for 4 km (with average 111 4 D 1 U 1 A204
18 speeds Q)
queuing traffic for 6 km (with average 112 4 D 1 U 1 A206
19 speeds Q)
queuing traffic for 10 km (with average 113 4 D 1 U 1 A210
20 speeds Q)
21 risk of queuing traffic (with average speeds Q) 132 4 D 1 U 1 A2D
22 long queues (with average speeds Q) 133 4 D 1 U 1 A7
23 slow traffic (with average speeds Q) 115 4 D 1 U 1 A3
24 slow traffic for 1 km (with average speeds Q) 116 4 D 1 U 1 A301
25 slow traffic for 2 km (with average speeds Q) 117 4 D 1 U 1 A302
26 slow traffic for 3 km (with average speeds Q) 134 4 D 1 U 1 A303
27 slow traffic for 4 km (with average speeds Q) 118 4 D 1 U 1 A304
28 slow traffic for 6 km (with average speeds Q) 119 4 D 1 U 1 A306
29 slow traffic for 10 km (with average speeds Q) 120 4 D 1 U 1 A310
30 heavy traffic (with average speeds Q) 122 4 D 1 1 A4
traffic heavier than normal (with average 142 4 D 1 1 A11
31 speeds Q)
traffic very much heavier than normal (with 143 4 D 1 1 A12
32 average speeds Q)
33 traffic flowing freely (with average speeds Q) 124 4 (D) 1 1 A5
34 traffic building up (with average speeds Q) 125 4 D 1 1 A6
35 traffic easing 135 (D) 1 1 A8
36 traffic congestion (with average speeds Q) 136 4 D 1 1 A9
37 traffic congestion, average speed of 10 km/h 70 D 1 U 1 A910
38 traffic congestion, average speed of 20 km/h 71 D 1 U 1 A920
39 traffic congestion, average speed of 30 km/h 72 D 1 U 1 A930
40 traffic congestion, average speed of 40 km/h 73 D 1 U 1 A940
41 traffic congestion, average speed of 50 km/h 74 D 1 1 A950
42 traffic congestion, average speed of 60 km/h 75 D 1 1 A960
43 traffic congestion, average speed of 70 km/h 76 D 1 1 A970
44 traffic congestion, average speed of 80 km/h 77 D 1 1 A980
45 traffic congestion, average speed of 90 km/h 78 D 1 1 A990
46 traffic congestion, average speed of 100 km/h 79 D 1 1 A9100
traffic lighter than normal (with average 137 4 D 1 1 A10
47 speeds Q)
queuing traffic (with average speeds Q). 138 4 D 1 U 1 A2.Z112
48 Approach with care
49 queuing traffic around a bend in the road 139 D 1 U 1 A2.Z165
50 queuing traffic over the crest of a hill 140 D 1 U 1 A2.Z166
queuing traffic (with average speeds Q). 2 4 D 1 U 1 A2.A1D
51 Risk of stationary traffic
52 (Q) accident(s). Stationary traffic 215 0 D 1 U 1 B1.A1
53 (Q) accident(s). Stationary traffic for 1 km 216 0 D 1 U 1 B1.A101
6 © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Table 2 (continued)
Line Text (metric units) Code N Q T D U C P R
54 (Q) accident(s). Stationary traffic for 2 km 217 0 D 1 U 1 B1.A102
55 (Q) accident(s). Stationary traffic for 3 km 348 0 D 1 U 1 B1.A103
56 (Q) accident(s). Stationary traffic for 4 km 218 0 D 1 U 1 B1.A104
57 (Q) accident(s). Stationary traffic for 6 km 219 0 D 1 U 1 B1.A106
58 (Q) accident(s). Stationary traffic for 10 km 220 0 D 1 U 1 B1.A110
59 (Q) accident(s). Risk of stationary traffic 221 0 D 1 U 1 B1.A1D
60 (Q) accident(s). Queuing traffic 222 0 D 1 U 1 B1.A2
61 (Q) accident(s). Queuing traffic for 1 km 223 0 D 1 U 1 B1.A201
62 (Q) accident(s). Queuing traffic for 2 km 224 0 D 1 U 1 B1.A202
63 (Q) accident(s). Queuing traffic for 3 km 349 0 D 1 U 1 B1.A203
64 (Q) accident(s). Queuing traffic for 4 km 225 0 D 1 U 1 B1.A204
65 (Q) accident(s). Queuing traffic for 6 km 226 0 D 1 U 1 B1.A206
66 (Q) accident(s). Queuing traffic for 10 km 227 0 D 1 U 1 B1.A210
67 (Q) accident(s). Risk of queuing traffic 228 0 D 1 U 1 B1.A2D
68 (Q) accident(s). Slow traffic 229 0 D 1 U 1 B1.A3
69 (Q) accident(s). Slow traffic for 1 km 230 0 D 1 U 1 B1.A301
70 (Q) accident(s). Slow traffic for 2 km 231 0 D 1 U 1 B1.A302
71 (Q) accident(s). Slow traffic for 3 km 350 0 D 1 U 1 B1.A303
72 (Q) accident(s). Slow traffic for 4 km 232 0 D 1 U 1 B1.A304
73 (Q) accident(s). Slow traffic for 6 km 233 0 D 1 U 1 B1.A306
74 (Q) accident(s). Slow traffic for 10 km 234 0 D 1 U 1 B1.A310
75 (Q) accident(s). Heavy traffic 236 0 D 1 1 B1.A4
76 (Q) accident(s). Traffic flowing freely 238 0 (D) 1 1 B1.A5
77 (Q) accident(s). Traffic building up 239 0 D 1 1 B1.A6
vehicles slowing to look at (Q) accident(s). 250 0 D 1 U 1 B8.A1
78 Stationary traffic
vehicles slowing to look at (Q) accident(s). 251 0 D 1 U 1 B8.A101
79 Stationary traffic for 1 km
vehicles slowing to look at (Q) accident(s). 252 0 D 1 U 1 B8.A102
80 Stationary traffic for 2 km
vehicles slowing to look at (Q) accident(s). 352 0 D 1 U 1 B8.A103
81 Stationary traffic for 3 km
vehicles slowing to look at (Q) accident(s). 253 0 D 1 U 1 B8.A104
82 Stationary traffic for 4 km
vehicles slowing to look at (Q) accident(s). 254 0 D 1 U 1 B8.A106
83 Stationary traffic for 6 km
vehicles slowing to look at (Q) accident(s). 255 0 D 1 U 1 B8.A110
84 Stationary traffic for 10 km
vehicles slowing to look at (Q) accident(s). 256 0 D 1 U 1 B8.A1D
85 Risk of stationary traffic
vehicles slowing to look at (Q) accident(s). 257 0 D 1 U 1 B8.A2
86 Queuing traffic
vehicles slowing to look at (Q) accident(s). 258 0 D 1 U 1 B8.A201
87 Queuing traffic for 1 km
vehicles slowing to look at (Q) accident(s). 259 0 D 1 U 1 B8.A202
88 Queuing traffic for 2 km
ISO 14819-2:2021(E)
Table 2 (continued)
Line Text (metric units) Code N Q T D U C P R
vehicles slowing to look at (Q) accident(s). 353 0 D 1 U 1 B8.A203
89 Queuing traffic for 3 km
vehicles slowing to look at (Q) accident(s). 260 0 D 1 U 1 B8.A204
90 Queuing traffic for 4 km
vehicles slowing to look at (Q) accident(s). 261 0 D 1 U 1 B8.A206
91 Queuing traffic for 6 km
vehicles slowing to look at (Q) accident(s). 262 0 D 1 U 1 B8.A210
92 Queuing traffic for 10 km
vehicles slowing to look at (Q) accident(s). 263 0 D 1 U 1 B8.A2D
93 Risk of queuing traffic
94 vehicles slowing to look at (Q) accident(s) 208 0 (D) 1 1 B8
vehicles slowing to look at (Q) accident(s). 264 0 D 1 U 1 B8.A3
95 Slow traffic
vehicles slowing to look at (Q) accident(s). 265 0 D 1 U 1 B8.A301
96 Slow traffic for 1 km
vehicles slowing to look at (Q) accident(s). 266 0 D 1 U 1 B8.A302
97 Slow traffic for 2 km
vehicles slowing to look at (Q) accident(s). 354 0 D 1 U 1 B8.A303
98 Slow traffic for 3 km
vehicles slowing to look at (Q) accident(s). 267 0 D 1 U 1 B8.A304
99 Slow traffic for 4 km
vehicles slowing to look at (Q) accident(s). 268 0 D 1 U 1 B8.A306
100 Slow traffic for 6 km
vehicles slowing to look at (Q) accident(s). 269 0 D 1 U 1 B8.A310
101 Slow traffic for 10 km
vehicles slowing to look at (Q) accident(s). 271 0 D 1 1 B8.A4
102 Heavy traffic
vehicles slowing to look at (Q) accident(s). 274 0 D 1 1 B8.A6
103 Traffic building up
vehicles slowing to look at (Q) accident(s). 355 0 (D) 1 U 1 B8.Z91
104 Danger
105 (Q) shed load(s). Stationary traffic 278 0 D 1 U 1 B10.A1
106 (Q) shed load(s). Stationary traffic for 1 km 279 0 D 1 U 1 B10.A101
107 (Q) shed load(s). Stationary traffic for 2 km 280 0 D 1 U 1 B10.A102
108 (Q) shed load(s). Stationary traffic for 3 km 356 0 D 1 U 1 B10.A103
109 (Q) shed load(s). Stationary traffic for 4 km 281 0 D 1 U 1 B10.A104
110 (Q) shed load(s). Stationary traffic for 6 km 282 0 D 1 U 1 B10.A106
111 (Q) shed load(s). Stationary traffic for 10 km 283 0 D 1 U 1 B10.A110
112 (Q) shed load(s). Risk of stationary traffic 284 0 D 1 U 1 B10.A1D
113 (Q) shed load(s). Queuing traffic 285 0 D 1 U 1 B10.A2
114 (Q) shed load(s). Queuing traffic for 1 km 286 0 D 1 U 1 B10.A201
115 (Q) shed load(s). Queuing traffic for 2 km 287 0 D 1 U 1 B10.A202
116 (Q) shed load(s). Queuing traffic for 3 km 357 0 D 1 U 1 B10.A203
117 (Q) shed load(s). Queuing traffic for 4 km 288 0 D 1 U 1 B10.A204
118 (Q) shed load(s). Queuing traffic for 6 km 289 0 D 1 U 1 B10.A206
119 (Q) shed load(s). Queuing traffic for 10 km 290 0 D 1 U 1 B10.A210
120 (Q) shed load(s). Risk of queuing traffic 291 0 D 1 U 1 B10.A2D
121 (Q) shed load(s). Slow traffic 292 0 D 1 U 1 B10.A3
8 © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Table 2 (continued)
Line Text (metric units) Code N Q T D U C P R
122 (Q) shed load(s). Slow traffic for 1 km 293 0 D 1 U 1 B10.A301
123 (Q) shed load(s). Slow traffic for 2 km 294 0 D 1 U 1 B10.A302
124 (Q) shed load(s). Slow traffic for 3 km 358 0 D 1 U 1 B10.A303
125 (Q) shed load(s). Slow traffic for 4 km 295 0 D 1 U 1 B10.A304
126 (Q) shed load(s). Slow traffic for 6 km 296 0 D 1 U 1 B10.A306
127 (Q) shed load(s). Slow traffic for 10 km 297 0 D 1 U 1 B10.A310
128 (Q) shed load(s). Heavy traffic 299 0 D 1 1 B10.A4
129 (Q) shed load(s). Traffic flowing freely 301 0 (D) 1 1 B10.A5
130 (Q) shed load(s). Traffic building up 302 0 D 1 1 B10.A6
131 (Q) overturned vehicle(s). Stationary traffic 360 0 D 1 U 1 B16.A1
(Q) overturned vehicle(s). Risk of station- 361 0 D 1 U 1 B16.A1D
132 ary traffic
133 (Q) overturned vehicle(s). Queuing traffic 362 0 D 1 U 1 B16.A2
(Q) overturned vehicle(s). Risk of queuing 363 0 D 1 U 1 B16.A2D
134 traffic
135 (Q) overturned vehicle(s). Slow traffic 364 0 D 1 U 1 B16.A3
136 (Q) overturned vehicle(s). Heavy traffic 366 0 D 1 1 B16.A4
137 (Q) overturned vehicle(s). Traffic building up 368 0 D 1 1 B16.A6
138 stationary traffic due to (Q) earlier accident(s) 379 0 D 1 U 1 B22.A1
risk of stationary traffic due to (Q) earlier 380 0 D 1 U 1 B22.A1D
139 accident(s)
140 queuing traffic due to (Q) earlier accident(s) 381 0 D 1 U 1 B22.A2
risk of queuing traffic due to (Q) earlier 382 0 D 1 U 1 B22.A2D
141 accident(s)
142 slow traffic due to (Q) earlier accident(s) 383 0 D 1 U 1 B22.A3
143 heavy traffic due to (Q) earlier accident(s) 385 0 D 1 1 B22.A4
144 traffic building up due to (Q) earlier accident(s) 387 0 D 1 1 B22.A6
145 (Q) broken down vehicle(s). Stationary traffic 313 0 D 1 U 1 B11.A1
(Q) broken down vehicle(s). Risk of station- 314 0 D 1 U 1 B11.A1D
146 ary traffic
147 (Q) broken down vehicle(s). Queuing traffic 315 0 D 1 U 1 B11.A2
(Q) broken down vehicle(s). Risk of queu- 316 0 D 1 U 1 B11.A2D
148 ing traffic
149 (Q) broken down vehicle(s). Slow traffic 317 0 D 1 U 1 B11.A3
150 (Q) broken down vehicle(s). Heavy traffic 319 0 D 1 1 B11.A4
(Q) broken down vehicle(s). Traffic flow- 321 0 (D) 1 1 B11.A5
151 ing freely
152 (Q) broken down vehicle(s). Traffic building up 322 0 D 1 1 B11.A6
153 closed ahead. Stationary traffic 410 D 1 U 1 C3.A1
154 closed ahead. Stationary traffic for 1 km 411 D 1 U 1 C3.A101
155 closed ahead. Stationary traffic for 2 km 412 D 1 U 1 C3.A102
156 closed ahead. Stationary traffic for 3 km 495 D 1 U 1 C3.A103
157 closed ahead. Stationary traffic for 4 km 413 D 1 U 1 C3.A104
158 closed ahead. Stationary traffic for 6 km 414 D 1 U 1 C3.A106
159 closed ahead. Stationary traffic for 10 km 415 D 1 U 1 C3.A110
160 closed ahead. Risk of stationary traffic 416 D 1 U 1 C3.A1D
ISO 14819-2:2021(E)
Table 2 (continued)
Line Text (metric units) Code N Q T D U C P R
161 closed ahead. Queuing traffic 417 D 1 U 1 C3.A2
162 closed ahead. Queuing traffic for 1 km 418 D 1 U 1 C3.A201
163 closed ahead. Queuing traffic for 2 km 419 D 1 U 1 C3.A202
164 closed ahead. Queuing traffic for 3 km 496 D 1 U 1 C3.A203
165 closed ahead. Queuing traffic for 4 km 420 D 1 U 1 C3.A204
166 closed ahead. Queuing traffic for 6 km 421 D 1 U 1 C3.A206
165 closed ahead. Queuing traffic for 10 km 422 D 1 U 1 C3.A210
168 closed ahead. Risk of queuing traffic 423 D 1 U 1 C3.A2D
169 closed ahead. Slow traffic 424 D 1 U 1 C3.A3
170 closed ahead. Slow traffic for 1 km 425 D 1 U 1 C3.A301
171 closed ahead. Slow traffic for 2 km 426 D 1 U 1 C3.A302
172 closed ahead. Slow traffic for 3 km 497 D 1 U 1 C3.A303
173 closed ahead. Slow traffic for 4 km 427 D 1 U 1 C3.A304
174 closed ahead. Slow traffic for 6 km 428 D 1 U 1 C3.A306
175 closed ahead. Slow traffic for 10 km 429 D 1 U 1 C3.A310
176 closed ahead. Heavy traffic 431 D 1 U 1 C3.A4
177 closed ahead. Traffic flowing freely 433 (D) 1 U 1 C3.A5
178 closed ahead. Traffic building up 434 D 1 U 1 C3.A6
179 blocked ahead. Stationary traffic 438 D 1 U 1 C4.A1
180 blocked ahead. Stationary traffic for 1 km 439 D 1 U 1 C4.A101
181 blocked ahead. Stationary traffic for 2 km 440 D 1 U 1 C4.A102
182 blocked ahead. Stationary traffic for 3 km 498 D 1 U 1 C4.A103
183 blocked ahead. Stationary traffic for 4 km 441 D 1 U 1 C4.A104
184 blocked ahead. Stationary traffic for 6 km 442 D 1 U 1 C4.A106
185 blocked ahead. Stationary traffic for 10 km 443 D 1 U 1 C4.A110
186 blocked ahead. Risk of stationary traffic 444 D 1 U 1 C4.A1D
187 blocked ahead. Queuing traffic 445 D 1 U 1 C4.A2
188 blocked ahead. Queuing traffic for 1 km 446 D 1 U 1 C4.A201
189 blocked ahead. Queuing traffic for 2 km 447 D 1 U 1 C4.A202
190 blocked ahead. Queuing traffic for 3 km 499 D 1 U 1 C4.A203
191 blocked ahead. Queuing traffic for 4 km 448 D 1 U 1 C4.A204
192 blocked ahead. Queuing traffic for 6 km 449 D 1 U 1 C4.A206
193 blocked ahead. Queuing traffic for 10 km 450 D 1 U 1 C4.A210
194 blocked ahead. Risk of queuing traffic 451 D 1 U 1 C4.A2D
195 blocked ahead. Slow traffic 452 D 1 U 1 C4.A3
196 blocked ahead. Slow traffic for 1 km 453 D 1 U 1 C4.A301
197 blocked ahead. Slow traffic for 2 km 454 D 1 U 1 C4.A302
198 blocked ahead. Slow traffic for 3 km 626 D 1 U 1 C4.A303
199 blocked ahead. Slow traffic for 4 km 455 D 1 U 1 C4.A304
200 blocked ahead. Slow traffic for 6 km 456 D 1 U 1 C4.A306
201 blocked ahead. Slow traffic for 10 km 457 D 1 U 1 C4.A310
202 blocked ahead. Heavy traffic 459 D 1 U 1 C4.A4
203 blocked ahead. Traffic flowing freely 461 (D) 1 U 1 C4.A5
204 blocked ahead. Traffic building up 462 D 1 U 1 C4.A6
10 © ISO 2021 – All rights reserved

ISO 14819-2:2021(E)
Table 2 (continued)
Line Text (metric units) Code N Q T D U C P R
205 (Q) lanes closed. Stationary traffic 521 0 D 1 U 1 D1.A1
206 (Q) lanes closed. Stationary traffic for 1 km 522 0 D 1 U 1 D1.A101
207 (Q) lanes closed. Stationary traffic for 2 km 523 0 D 1 U 1 D1.A102
208 (Q) lanes closed. Stationary traffic for 3 km 651 0 D 1 U 1 D1.A103
209 (Q) lanes closed. Stationary traffic for 4 km 524 0 D 1 U 1 D1.A104
210 (Q) lanes closed. Stationary traffic for 6 km 525 0 D 1 U 1 D1.A106
211 (Q) lanes closed. Stationary traffic for 10 km 526 0 D 1 U 1 D1.A110
212 (Q) lanes closed. Risk of stationary traffic 527 0 D 1 U 1 D1.A1D
213 (Q) lanes closed. Queuing traffic 528 0 D 1 U 1 D1.A2
214 (Q) lanes closed. Queuing traffic for 1 km 529 0 D 1 U 1 D1.A201
215 (Q) lanes closed. Queuing traffic for 2 km 530 0 D 1 U 1 D1.A202
216 (Q) lanes closed. Queuing traffic for 3 km 652 0 D 1 U 1 D1.A203
217 (Q) lanes closed. Queuing traffic for 4 km 531 0 D 1 U 1 D1.A204
218 (Q) lanes closed. Queuing traffic for 6 km 532 0 D 1 U 1 D1.A206
219 (Q) lanes closed. Queuing traffic for 10 km 533 0 D 1 U 1 D1.A210
220 (Q) lanes closed. Risk of queuing traffic 534 0 D 1 U 1 D1.A2D
221 (Q) lanes closed. Slow traffic 535 0 D 1 U 1 D1.A3
222 (Q) lanes closed. Slow traffic for 1 km 536 0 D 1 U 1 D1.A301
223 (Q) lanes closed. Slow traffic for 2 km 537 0 D 1 U 1 D1.A302
224 (Q) lanes closed. Slow traffic for 3 km 653 0 D 1 U 1 D1.A303
225 (Q) lanes closed. Slow traffic for 4 km 538 0 D 1 U 1 D1.A304
226 (Q) lanes closed. Slow traffic for 6 km 539 0 D 1 U 1 D1.A306
227 (Q) lanes closed. Slow traffic for 10 km 540 0 D 1 U 1 D1.A310
228 (Q) lanes closed. Heavy traffic 542 0 D 1 1 D1.A4
229 (Q)lanes closed. Traffic flowing freely 544 0 (D) 1 1 D1.A5
230 (Q)lanes closed. Traffic building up 545 0 D 1 1 D1.A6
carriageway reduced (from Q lanes) to one 546 0 D 1 U 1 D15.A1
231 lane. Stationary traffic
carriageway reduced (from Q lanes) to one 547 0 D 1 U 1 D15.A1D
232 lane. Risk of stationary traffic
carriageway reduced (from Q lanes) to one 548 0 D 1 U 1 D15.A2
233 lane. Queuing traffic
carriageway reduced (from Q lanes) to one 549 0 D 1 U 1 D15.A2D
234 lane. Risk of queuing traffic
carriageway reduced (from Q lanes) to one 550 0 D 1 U 1 D15.A3
235 lane. Slow traffic
carriageway reduced (from Q lanes) to one 552 0 D 1 1 D15.A4
236 lane. Heavy traffic
carriageway reduced (from Q lanes) to one 554 0 (D) 1 1 D15.A5
237 lane. Traffic flowing freely
carriageway reduced (from Q lanes) to one 555 0 D 1 1 D15.A6
238 lane. Traffic building up
carriageway reduced (from Q lanes) to two 556 0 D 1 U 1 D16.A1
239 lanes. Stationary traffic
carriageway reduced (from Q lanes) to two 557 0 D 1 U 1 D16.A1D
240 lanes. Risk of stationary traffic
ISO 14819-2:2021(E)
Table 2 (continu
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