EN 16186-3:2016
(Main)Railway applications - Driver's cab - Part 3: Design of displays
Railway applications - Driver's cab - Part 3: Design of displays
This European Standard specifies all necessary design rules and associated assessment criteria as well as guidance concerning the design of information and the corresponding user interfaces of driver’s cabs of EMU, DMU, Railcars, Locomotives and Driving trailers.
NOTE 1 This standard applies to rolling stock in the scope of the Directive 2008/57/EC.
It considers the tasks the driver has to carry out and human factors. This standard specifies how information is arranged and displayed. It is explicitly applicable to display applications like TRD, ETD, CCD and TDD and may be completed by the CLC/TS 50459 series.
This standard is not applicable to legacy ATP systems. If requirements in this standard are in conflict with the ERA DMI document (ERA_ERTMS_015560) the requirements of the ERA DMI document should prevail for the CCD ETCS application.
NOTE 2 For resolving any discrepancies (e.g. 5.4.2.3) ERA is expected to harmonize the usage philosophy of the ERA DMI with this standard.
All assessments based on the normative requirements of this standard are applicable mainly to
- symbols provided by Annex A,
- arrangement of screen areas conform with Figure 1 (generic organization of information),
- colours, fonts,
- audible information.
This standard is applicable to the following aspects:
- legibility and intelligibility of displayed information: general rules concerning the layout of information on the displays, including character size and spacing;
- definition of harmonized colours, symbols, etc.;
- definition of harmonized principles for the command interface (by physical or touchscreen buttons): size, symbols, reaction time, way to give feedback to the driver, etc.;
- general arrangements (dialogue structures, sequences, layout philosophy, colour philosophy), symbols, audible information, data entry arrangements.
NOTE 3 If this standard deals with how information can be given for operation and in degraded situations, it does not define operating rules and degraded situations.
This standard does not request any safety requirement related with displayed information.
This standard specifies minimum requirements and does not prevent more complex solutions.
Requirements describing the functions using the display are out of scope of this standard.
Bahnanwendungen - Führerraum - Teil 3: Gestaltung von Führerraumanzeigen
Diese Norm gibt alle notwendigen Gestaltungsregeln und damit verbundene Bewertungskriterien sowie Anleitungen für die Gestaltung von Führerraumanzeigen interoperabler Fahrzeuge vor. Sie berücksich¬tigt die Aufgaben des Triebfahrzeugführers und menschliche Faktoren. Diese Norm gilt nicht für bestehende Systeme.
Es werden drei verschiedene Arten von Anforderungen unterschieden, die mit REQ-Nummern gekenn¬zeichnet sind:
a) Zielstellungen
Zielstellungen sind mit dem Begriff "Zielstellung" gekennzeichnet und werden mit "sollte" ausgedrückt. Zielstellungen selbst unterliegen keiner Nachweisführung. Die in dieser Norm genannten Zielstellungen werden durch Anwendung dieser Norm als erfüllt angesehen.
b) Empfehlungen
Empfehlungen werden durch "sollte" ausgedrückt. Eine Empfehlung ist nur dann Gegenstand einer Nachweisführung, wenn die REQ vom Anwender ausgewählt wurde.
c) Normanforderungen
Normanforderungen werden durch "muss" ausgedrückt und stellen die umfassende Menge aller Anforderun-gen im Hinblick auf Interoperabilität dar. Sie unterliegen der Nachweisführung.
Alle Nachweise, die auf den Normanforderungen dieser Norm beruhen, sind beschränkt auf
- Symbole wie in Anhang A vorgesehen, einschließlich Start- und Endbedingungen;
- Anordnung von Führerraumanzeigenbereichen in Übereinstimmung mit Bild 2 (allgemeine Organisation von Informationen);
- Farben, Schriftarten;
- akustische Informationen.
(...)
Applications ferroviaires - Cabine de conduite - Partie 3 : Conception des affichages
La présente Norme européenne spécifie l’ensemble des règles de conception nécessaires et des critères d’évaluation correspondants ainsi que des recommandations, concernant la conception des informations et des interfaces utilisateur correspondantes des cabines de conduite des rames automotrices électriques (EMU), rames automotrices diesel (DMU), automotrices, locomotives et voitures-pilotes.
NOTE 1 La présente norme s’applique au matériel roulant relevant du domaine d’application de la Directive 2008/57/CE.
Elle tient compte des tâches que le conducteur doit effectuer et des facteurs humains. La présente norme spécifie la manière dont l'information est organisée et affichée. Elle s’applique explicitement aux applications utilisant des afficheurs telles que les TRD, ETD, CCD et TDD et peut être complétée par la série CLC/TS 50459.
La présente norme ne s’applique pas aux systèmes ATP existants. Si les exigences de cette norme sont en conflit avec le document DMI de l’ERA (ERA_ERTMS_015560), il convient que les exigences du document DMI de l’ERA prévalent pour l'application de l’afficheur CCD ETCS.
NOTE 2 Pour résoudre d’éventuelles divergences (par exemple 5.4.2.3) l’ERA est censée harmoniser la philosophie d’utilisation du document DMI de l’ERA avec la présente norme.
Toutes les évaluations fondées sur les exigences normatives de la présente norme s’appliquent principalement
— aux symboles donnés en Annexe A ;
— à la disposition des zones d’affichage des écrans en cabine conformément à la Figure 1 (organisation générique des informations) ;
— aux couleurs et aux polices ;
— aux informations sonores.
La présente norme s’applique aux aspects suivants :
— la lisibilité et l’intelligibilité des informations affichées : règles générales relatives à la disposition des informations sur les afficheurs, y compris la taille et l’espacement des caractères ;
— la définition de couleurs, symboles, etc. harmonisés ;
— la définition de principes harmonisés pour l’interface de commande (touches physiques ou sur écrans tactiles) : taille, symboles, temps de réaction, retour d’information au conducteur, etc. ;
— dispositions générales (structure des dialogues, séquences, philosophie de la disposition, philosophie des couleurs), symboles, informations sonores, principes d’entrée des données.
NOTE 3 Si la présente norme traite de la façon dont l'information peut être donnée pour l'exploitation et dans des situations dégradées, cela ne définit pas les règles d'exploitation et les situations dégradées.
La présente norme ne requiert aucune exigence de sécurité relative aux informations affichées.
La présente norme spécifie des exigences minimales et n’interdit pas des solutions plus complexes.
Les exigences fonctionnelles des fonctions utilisant les affichages ne relèvent pas du domaine d’application de cette norme.
Železniške naprave - Voznikova kabina - 3. del: Načrtovanje slikovnih zaslonov
Ta standard navaja konstrukcijska pravila in smernice v zvezi z načrtovanjem slikovnih zaslonov, ki jih uporablja voznik za funkcije, določene v specifikaciji CR LOC&PAS TSI, da se zagotovi voznikova pravilna uporaba in odziv ob upoštevanju opravil, ki jih mora izvajati voznik, ter človeških dejavnikov.
Zajema naslednje vidike:
Čitljivost in razumljivost prikazanih informacij: splošna pravila v zvezi s postavitvijo informacij na slikovnih zaslonih, vključno z velikostjo znakov in razmikom.
Opredelitev usklajenih barv, piktogramov itd.
Opredelitev usklajenih načel za vmesnik (fizični gumbi ali gumbi na dotik): velikost, piktogrami, odzivni čas, način podajanja povratnih informacij vozniku itd.
General Information
- Status
- Withdrawn
- Publication Date
- 30-Aug-2016
- Withdrawal Date
- 20-Jan-2026
- Technical Committee
- CEN/TC 256 - Railway applications
- Drafting Committee
- CEN/TC 256/WG 37 - Driver's cabs and windscreens
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 05-Dec-2018
- Completion Date
- 21-Jan-2026
Relations
- Merged Into
EN 16186-3:2016+A1:2018 - Railway applications - Driver's cab - Part 3: Design of displays - Effective Date
- 18-Jan-2023
- Effective Date
- 02-Nov-2016
Frequently Asked Questions
EN 16186-3:2016 is a standard published by the European Committee for Standardization (CEN). Its full title is "Railway applications - Driver's cab - Part 3: Design of displays". This standard covers: This European Standard specifies all necessary design rules and associated assessment criteria as well as guidance concerning the design of information and the corresponding user interfaces of driver’s cabs of EMU, DMU, Railcars, Locomotives and Driving trailers. NOTE 1 This standard applies to rolling stock in the scope of the Directive 2008/57/EC. It considers the tasks the driver has to carry out and human factors. This standard specifies how information is arranged and displayed. It is explicitly applicable to display applications like TRD, ETD, CCD and TDD and may be completed by the CLC/TS 50459 series. This standard is not applicable to legacy ATP systems. If requirements in this standard are in conflict with the ERA DMI document (ERA_ERTMS_015560) the requirements of the ERA DMI document should prevail for the CCD ETCS application. NOTE 2 For resolving any discrepancies (e.g. 5.4.2.3) ERA is expected to harmonize the usage philosophy of the ERA DMI with this standard. All assessments based on the normative requirements of this standard are applicable mainly to - symbols provided by Annex A, - arrangement of screen areas conform with Figure 1 (generic organization of information), - colours, fonts, - audible information. This standard is applicable to the following aspects: - legibility and intelligibility of displayed information: general rules concerning the layout of information on the displays, including character size and spacing; - definition of harmonized colours, symbols, etc.; - definition of harmonized principles for the command interface (by physical or touchscreen buttons): size, symbols, reaction time, way to give feedback to the driver, etc.; - general arrangements (dialogue structures, sequences, layout philosophy, colour philosophy), symbols, audible information, data entry arrangements. NOTE 3 If this standard deals with how information can be given for operation and in degraded situations, it does not define operating rules and degraded situations. This standard does not request any safety requirement related with displayed information. This standard specifies minimum requirements and does not prevent more complex solutions. Requirements describing the functions using the display are out of scope of this standard.
This European Standard specifies all necessary design rules and associated assessment criteria as well as guidance concerning the design of information and the corresponding user interfaces of driver’s cabs of EMU, DMU, Railcars, Locomotives and Driving trailers. NOTE 1 This standard applies to rolling stock in the scope of the Directive 2008/57/EC. It considers the tasks the driver has to carry out and human factors. This standard specifies how information is arranged and displayed. It is explicitly applicable to display applications like TRD, ETD, CCD and TDD and may be completed by the CLC/TS 50459 series. This standard is not applicable to legacy ATP systems. If requirements in this standard are in conflict with the ERA DMI document (ERA_ERTMS_015560) the requirements of the ERA DMI document should prevail for the CCD ETCS application. NOTE 2 For resolving any discrepancies (e.g. 5.4.2.3) ERA is expected to harmonize the usage philosophy of the ERA DMI with this standard. All assessments based on the normative requirements of this standard are applicable mainly to - symbols provided by Annex A, - arrangement of screen areas conform with Figure 1 (generic organization of information), - colours, fonts, - audible information. This standard is applicable to the following aspects: - legibility and intelligibility of displayed information: general rules concerning the layout of information on the displays, including character size and spacing; - definition of harmonized colours, symbols, etc.; - definition of harmonized principles for the command interface (by physical or touchscreen buttons): size, symbols, reaction time, way to give feedback to the driver, etc.; - general arrangements (dialogue structures, sequences, layout philosophy, colour philosophy), symbols, audible information, data entry arrangements. NOTE 3 If this standard deals with how information can be given for operation and in degraded situations, it does not define operating rules and degraded situations. This standard does not request any safety requirement related with displayed information. This standard specifies minimum requirements and does not prevent more complex solutions. Requirements describing the functions using the display are out of scope of this standard.
EN 16186-3:2016 is classified under the following ICS (International Classification for Standards) categories: 45.060.10 - Tractive stock. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 16186-3:2016 has the following relationships with other standards: It is inter standard links to EN 16186-3:2016+A1:2018, EN 16186-3:2016/prA1. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 16186-3:2016 is associated with the following European legislation: EU Directives/Regulations: 2008/57/EC; Standardization Mandates: M/334, M/483. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 16186-3:2016 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnanwendungen - Führerraum - Teil 3: Gestaltung von FührerraumanzeigenApplications ferroviaires - Cabine de conduite - Partie 3: Conception des affichagesRailway applications - Driver's cab - Part 3: Design of displays45.060.10Tractive stockICS:Ta slovenski standard je istoveten z:EN 16186-3:2016SIST EN 16186-3:2016en,fr,de01-november-2016SIST EN 16186-3:2016SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16186-3
August
t r s x ICS
v wä r x rä s r English Version
Railway applications æ Driver 5s cab æ Part
uã Design of displays Applications ferroviaires æ Cabine de conduite æ Partie
u ã Conception des affichages
Bahnanwendungen æ Führerraum æ Teil
uã Gestaltung von Führerraumanzeigen This European Standard was approved by CEN on
s t June
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x s z xæ uã t r s x ESIST EN 16186-3:2016
European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 7 3 Terms and definitions . 7 4 Symbols and abbreviations . 12 5 Characteristics of displays and visible or audible information . 12 5.1 General . 12 5.1.1 General guidelines . 12 5.1.2 Provide operation relevant information . 13 5.1.3 Display performance requirements . 13 5.1.4 Principles for warnings . 15 5.1.5 Languages . 16 5.2 Design of information . 16 5.2.1 General . 16 5.2.2 Screen organization and dimensions . 17 5.2.3 Luminance . 18 5.2.4 Colours . 19 5.2.5 Symbols . 24 5.2.6 Text . 25 5.2.7 Loudspeaker . 27 5.3 User/display interaction . 27 5.3.1 Buttons . 27 5.3.2 Keyboards . 32 5.4 Input of data . 33 5.4.1 General . 33 5.4.2 Entering (alpha)numeric characters . 33 5.4.3 Input fields . 33 5.4.4 Input for predefined data . 34 5.4.5 Acknowledgements . 34 5.5 Troubleshooting . 35 5.5.1 Fault indication requesting driver warning and acknowledgement (troubleshooting process) . 35 5.5.2 Fault indication not requesting driver warning and acknowledgement . 36 Annex A (normative)
Symbols, text messages and audible messages. 37 A.1 General . 37 A.2 Mandatory symbols and text messages . 37 A.3 Optional symbols . 73 A.4 Audible warnings . 83 A.4.1 Application specific audible warnings . 83 SIST EN 16186-3:2016
Information shown on displays by associated symbols related with functions . 86 B.1 Mandatory information, if the function exists . 86 B.1.1 For all types of rolling stock . 86 B.1.2 For high speed Class 1 trains . 87 B.2 Optional information. 87 Annex C (informative)
Information referring to functions using the display . 89 Annex D (informative)
Hard keys arrangement . 91 Annex E (informative)
TDD basic screen . 92 Annex F (informative)
TDD menu structure . 95 Annex G (informative)
Possible responses to TCMS detectable failures, depending on the quality of information . 98 Annex H (informative)
Display screens from various applications (examples) . 100 Annex I (informative)
Perception areas on driver's desk . 104 Annex J (informative)
Data entry and keyboard (example). 105 J.1 Principles for Example 1 . 105 J.1.1 General . 105 J.1.2 Numerical data entry, Example 1 . 105 J.1.3 Alphanumerical data entry, Example 1 . 106 J.2 Alphanumerical data entry, Example 2 . 109 Annex K (informative)
Allocation of clauses to functions according to EN 15380-4 . 111 Annex L (informative)
Project specific tasks of technical specification or choice of an option provided by this standard . 116 L.1 General . 116 L.2 Project specific tasks . 116 L.3 Choice of options . 117 Annex M (informative)
Registration form for new graphical symbols . 119 Annex ZA (informative)
Relationship between this
European
Standard and the Essential Requirements
of EU Directive 2008/57/EC . 120 Bibliography . 121
A part 4: "Layout of the driver’s cab" will complete the series. According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16186-3:2016
NOTE 2 For resolving any discrepancies (e.g. 5.4.2.3) ERA is expected to harmonize the usage philosophy of the ERA DMI with this standard. All assessments based on the normative requirements of this standard are applicable mainly to — symbols provided by Annex A, — arrangement of screen areas conform with Figure 1 (generic organization of information), — colours, fonts, — audible information. This standard is applicable to the following aspects: — legibility and intelligibility of displayed information: general rules concerning the layout of information on the displays, including character size and spacing; — definition of harmonized colours, symbols, etc.; — definition of harmonized principles for the command interface (by physical or touchscreen buttons): size, symbols, reaction time, way to give feedback to the driver, etc.; — general arrangements (dialogue structures, sequences, layout philosophy, colour philosophy), symbols, audible information, data entry arrangements. NOTE 3 If this standard deals with how information can be given for operation and in degraded situations, it does not define operating rules and degraded situations. This standard does not request any safety requirement related with displayed information. This standard specifies minimum requirements and does not prevent more complex solutions. Requirements describing the functions using the display are out of scope of this standard. SIST EN 16186-3:2016
cell basic unit to define the shape of DMI objects and the proportions of areas Note 1 to entry:
Depending on the resolution of the screen, a cell consists of one or more pixels. 3.7 Closed Circuit Television CCTV television allowing the transmission of images over a relatively short distance intended for a particular group of users [SOURCE: IEC 723-01-19, modified “generally by cable” removed] 3.8 display hardware device or system that shows text and/or graphic information to the user Note 1 to entry: The display optionally contains hard keys. 3.9 command action executed by the personnel on the human-machine interface 3.10 consistency maintenance of interface design choices (codes, naming, formats, procedures, etc.) in similar contexts Note 1 to entry: see [5]. SIST EN 16186-3:2016
If driver advice is available, this information may be provided e.g. on the TDD, ETD, CCD or TRD. 5.1.2.3 Lubrication information If lubrication of wheel flange is available, the related information should be provided on the TDD. 5.1.2.4 Exterior lighting diagnostic If a system is available for monitoring continuously the head, marker and tail lights, an interface shall be provided to indicate light failure to the driver. 5.1.3 Display performance requirements 5.1.3.1 Principle of presenting information 5.1.3.1.1 General All information should be organized into functional groups that contain related items of information. Such relationships should be based on logical or functional considerations: a) Critical information SIST EN 16186-3:2016
Key 1 Option: Headline (text) 2 Option: Status line (additional status line, preferably text) 3 Option: Function (soft keys) 4 Application-specific organization of information (graphic and/or text information) 5 Option: Status (additional status line, preferably symbols) 6 Option: Function (soft keys a) or Status (additional status line, preferably symbols) 7 Option: Bottom status line(s): Symbols and text 8 Function (soft key labels or touchscreen buttons) a preferably for navigation and validation (acknowledgement). Within the same screen navigation and/or validation may not be permanently provided. Then the soft keys show the enabled functions of the related hard keys. Figure 1 — Display screen organization SIST EN 16186-3:2016
The uniformity of the luminance (Ldiff [%] calculated from Lmax [cd/m2] and Lmin [cd/m2] as shown below) over the entire display area, for example the white and blue background, should not exceed 25 %.
Ldiff [%] = (Lmax - Lmin)* 100/Lmax The permitted colour tolerance for colour coordinates according to the RGB system is described for each colour in Table 1.
This requirement applies to the entire angular range, where the visibility is required on the display surface 5.2.3.7 Multiple display adjustment If more than one display is interfacing with TCMS, the luminance of the screens of these displays should be adjustable simultaneously. Selective control should always be possible. NOTE Manual adjustment supersedes automatic adjustment, see Annex A.1, Pos. 8. 5.2.4 Colours 5.2.4.1 Definition of colours Table 1 — Permitted colours for screens EN 16186–3 colour ID EN 16186–3 R EN 16186–3 G EN 16186–3 B Resulting EN 16186–3 colour Colour name Absolute range
R Absolute range
G Absolute range
B Resulting EN 16186–3 colour with lower range values Resulting EN 16186–3 colour with upper range values 1 255 255 255 255, 255, 255 white 240 - 255 240 - 255 240 - 255 240, 240, 240 255, 255, 255 2 0 0 0 0, 0, 0 black 0 - 15 0 - 15 0 - 15 0, 0, 0 15, 15, 15 3 195 195 195 195, 195, 195 grey 192 - 207 192 - 207 192 - 207 192, 192, 192 207, 207, 207 SIST EN 16186-3:2016
R Absolute range
G Absolute range
B Resulting EN 16186–3 colour with lower range values Resulting EN 16186–3 colour with upper range values 4 150 150 150 150, 150, 150 medium
grey 144 - 159 144 - 159 144 - 159 144, 144, 144 159, 159, 159 5 85 85 85 85, 85, 85 dark grey 80 - 95 80 - 95 80 - 95 80, 80, 80 95, 95, 95 6 8 24 57 8, 24, 57 shadow 0 - 15 16 - 31 48 - 63 0, 16, 48 15, 31, 63 7 3 17 34 3, 17, 34 dark blue 0 - 15 16 - 31 32 - 47 0, 16, 32 15, 31, 47 8 33 49 74 33, 49, 74 dark night blue 32 - 47 48 - 63 64 - 79 32, 48, 64 47, 63, 79 9 41 74 107 41, 74, 107 light night blue 32 - 47 64 - 79 96 - 111 32, 64, 96 47, 79, 111 10 0 0 195 0, 0, 195 blue 0 - 15 0 - 15 192 - 207 0, 0, 192 15, 15, 207 11 180 180 0 180, 180, 0 ochre 176 - 191 176 - 191 0 - 15 176, 176, 0 191, 191, 15 12 223 223 0 223, 223, 0 yellow 208 - 223 208 - 223 0 - 15 208, 208, 0 223, 223, 15 13 234 145 0 234, 145, 0 orange 224 - 239 144 - 159 0 - 15 224, 144, 0 239, 159, 15 SIST EN 16186-3:2016
R Absolute range
G Absolute range
B Resulting EN 16186–3 colour with lower range values Resulting EN 16186–3 colour with upper range values 14 191 0 2 191, 0, 2 dark red 176 - 191 0 - 15 0 - 15 176, 0, 0 191, 15, 15 15 255 0 0 255, 0, 0 red 240 - 255 0 - 15 0 - 15 240, 0, 0 255, 15, 15 16 255 62 62 255, 62, 62 light red 240 - 255 48 - 63 48 - 63 240, 48, 48 255, 63, 63 NOTE The colour values are software RGB values. 5.2.4.2 Meaning of colours 5.2.4.2.1 Colours used for messages and commands The meaning of colours used for messages and commands shall be according to Table 2. The colours of letters and numbers do not have specific meanings. Combinations of colours shall comply with Table 3. Table 2 — Meaning of colours used for messages and commands Background colours (references to Table 1) Meaning Requirements (see also principles for the display of symbols and texts) 1,3,4,5 information 5.2.4.7.1 7 status 5.2.4.7.2 - 5.2.4.7.3
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