EN 12675-2017 en Traffic signal controllers - Functional safety requirements.pdf

1、Traffic signal controllers - Functional safety requirementsBS EN 12675:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12675 August 2017 ICS 93.080.30 Supersedes EN 12675:2000English Version Traffic signal cont

2、rollers - Functional safety requirementsContrleurs de signaux de circulation routire - Exigences de scurit fonctionnelle Steuergerte fr Lichtsignalanlagen - Funktionale Sicherheitsanforderungen This European Standard was approved by CEN on 19 June 2017. CEN members are bound to comply with the CEN/C

3、ENELEC 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 Centr

4、e 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

5、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, Netherla

6、nds, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Al

7、l rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12675:2017 ENational forewordThis British Standard is the UK implementation of EN 12675:2017. It supersedes BS EN 12675:2001, which is withdrawn.The UK participation in its preparation was

8、entrusted to Technical Committee EPL/526, Road traffic control signals.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct appl

9、ication. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 87282 2ICS 93.080.30Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Com

10、mittee on 30 September 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 12675:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12675 August 2017 ICS 93.080.30 Supersedes EN 12675:2000English Version Traffic signal controllers - Functional safety requ

11、irementsContrleurs de signaux de circulation routire - Exigences de scurit fonctionnelle Steuergerte fr Lichtsignalanlagen - Funktionale Sicherheitsanforderungen This European Standard was approved by CEN on 19 June 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations whic

12、h 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 Eur

13、opean 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 a

14、re 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, R

15、omania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any

16、form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12675:2017 EBS EN 12675:2017EN 12675:2017 (E) 2 Contents Page European foreword 3 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions 6 4 Functional safety requirements . 10 4.1 General 10 4.2

17、Application of power 11 4.3 Diagnostic checks of traffic signal controller logic system 11 4.4 Classification of faults 11 4.5 Conflict faults 12 4.5.1 Signal group conflicts (unwanted signals) . 12 4.5.2 Signal group green/absent red conflict. 12 4.5.3 Absent red/absent red conflicts 13 4.6 Nationa

18、l signal regulations (unwanted signals) 13 4.7 Absent signals . 14 4.7.1 Absent signal group red signals . 14 4.7.2 Absent signal groups, yellow or green signals 15 4.8 Compliance checking . 15 4.9 Safety timings . 15 4.10 National signal sequences 16 4.11 Faults of external inputs . 16 5 Fault cond

19、ition . 17 5.1 General 17 5.2 Major faults . 17 5.3 Minor faults . 17 5.4 Storage of faults . 17 6 User documentation . 18 7 Marking and labelling 18 Annex A (informative) A-deviations . 19 Bibliography 21 BS EN 12675:2017EN 12675:2017 (E) 3 European foreword This document (EN 12675:2017) has been p

20、repared by Technical Committee CEN/TC 226 “Road equipment”, the secretariat of which is held by AFNOR. 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 February 2018, and conflicting national stand

21、ards shall be withdrawn at the latest by February 2018. 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 12675:2000. The m

22、ain changes in this revision are as follows: a) Clause 1, Scope: deleted the restriction of scope for portable traffic signal control equipment; b) Clause 1, Scope: clarified the handling of classes on national level; c) Clause 2, Update of references to standard EN 50556; d) 3.9: deleted the restri

23、ction of manual operation mode to an operator; e) 3.12: renamed and reordered the operation modes of a traffic signal controller; f) 3.29: invented the definition for time base frequency; g) 3.32: extended the definition of traffic signal controller by the function of monitoring; h) 3.34: invented t

24、he definition of traffic signal controller logic; i) 4.2: generalized the requirement on power up self-test; j) 4.3: generalized the requirement on continuous diagnostic checks; k) 4.7.1 Class CB1: deleted the restriction to vehicular signal groups; l) 4.9: clarified the requirements to safety relev

25、ant timings; m) 5.2: deleted the requirement for ongoing operation of master clock and maintenance facilities in the case of a major fault; n) 5.4: renumbered and corrected the list of faults necessary to be recorded; o) 6: restricted necessary user documentation to needs for safe operation and serv

26、ice; p) 6 f): replaced means of programming by tools; BS EN 12675:2017EN 12675:2017 (E) 4 q) 7. Reformulated the requirements for marking and labelling more general, to cover also onsite reprogrammable memory; r) Annex A: deleted deviations on National Regulations for Netherlands; s) Some correction

27、s in orthography and grammar. 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 Repu

28、blic 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. BS EN 12675:2017EN 12675:2017 (E) 5 Introduction

29、The objective of this European Standard is to specify the functional safety requirements of equipment used for the control of traffic signals. It relates to the control of signals to traffic, and any associated signalled traffic movements. The primary concern is to safeguard persons and objects agai

30、nst hazards due to conflicting signals to traffic. The hazards to be considered include, but are not limited to, the following types of possible signal failures: a) the failure to display a red signal to traffic; b) the display of a green signal to conflicting traffic; c) the failure to display the

31、correct signal sequence to traffic; d) the failure to provide the correct timing of all signals. Persons to be safeguarded are: e) users of traffic signals, drivers and passengers of vehicles (including public transport), pedestrians, cyclists and equestrians, persons with physical disabilities; f)

32、maintenance and inspection personnel. BS EN 12675:2017EN 12675:2017 (E) 6 1 Scope This European Standard specifies the functional safety requirements for traffic signal controllers. It is applicable to traffic signal control equipment permanently and temporarily installed, and portable traffic contr

33、ol equipment, with the exception of portable traffic signal equipment only capable of controlling alternate / shuttle working lanes (as further defined in 3.37), without the control of crossing vehicular or pedestrian movements. Traffic signal controllers, as defined by this European Standard, are r

34、equired to control conflicting traffic, both vehicular and pedestrian in a safe manner. Examples are junction signals, pedestrian crossings, shuttle signals, public transport signals. The electrical safety requirements and additional traffic safety requirements, the interfacing with external equipme

35、nt and the test methods for verifying compliance with this European Standard are contained in EN 50556. For a full applicability of this European Standard as well as of the EN 50556 the national standardization bodies are requested to define the set of classes relevant for their national requirement

36、s. NOTE National requirements may specify special conditions for public transport signals (PT) and for any other signal that is not specified in a European Standard. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable

37、 for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50556:2011, Road traffic signal systems 3 Terms and definitions For the purposes of this document, the following te

38、rms and definitions apply. 3.1 absent signal intended signal the luminous intensity of which does not comply with the signal “ON” requirements Note 1 to entry: “ON” requirements as specified in EN 50556 3.2 bicycle signal traffic signal for the exclusive purpose of directing bicycle traffic at signa

39、lized locations 3.3 central control system for co-ordinating and monitoring a network or group of traffic signals using a central computer, or equivalent device, and transmission systems 3.4 conflicting green (green/green conflict) simultaneous display of green signals allowing conflicting traffic m

40、ovements 3.5 conflicting signal groups two or more signal groups that will cause conflicting traffic movements if operated concurrently BS EN 12675:2017EN 12675:2017 (E) 7 3.6 failure mode non-operational state of the traffic signal controller in which, as a result of a major fault, the normal opera

41、tion mode is replaced with a flashing yellow or a signals off condition 3.7 green signal signal that is displayed to traffic having the colour “green” Note 1 to entry: Colour “green” as specified in EN 12368. 3.8 major fault fault the occurrence of which has the effect that the safe operation of the

42、 signal traffic system cannot be guaranteed as defined in the national requirements 3.9 manual operation mode operational state of the traffic signal controller in which the state of the signals to traffic is controlled manually 3.10 memory device means of storing information in a manner permitting

43、its retrieval 3.11 minor faults fault as defined in the national requirements, other than a major fault, that is capable of being identified and recorded 3.12 mode specific condition of a traffic signal controller used to control the signals to traffic EXAMPLE fixed time operation mode; traffic depe

44、ndent operation mode; standby operation mode; manual operation mode; failure mode; 3.13 monitoring method of collecting information about the traffic signal controller including diagnostic checks used to detect a fault condition BS EN 12675:2017EN 12675:2017 (E) 8 3.14 national signal regulation ord

45、er and appearance of signal aspects, displayed to traffic, that are prescribed in national requirements 3.15 national signal sequence sequential order and appearance of signals, to traffic, to satisfy a specific national condition and/or application EXAMPLE: signal start up sequence 3.16 normal oper

46、ation mode any operational state of the traffic signal controller, other than failure mode, especially the operational state in which the signals are in accordance with the national signal regulation 3.17 pedestrian signal traffic signal for the exclusive purpose of directing pedestrian traffic at s

47、ignalized locations 3.18 portable traffic signal control equipment traffic signal control equipment designed for temporary applications and designed for easy transportation from one site to another 3.19 power supply power source providing energy to an active device or circuit 3.20 public transport s

48、ignals (PT) traffic signal for the exclusive purpose of directing public transport vehicles at signalized locations 3.21 red signal signal that is displayed to traffic having a colour “red” Note 1 to entry: Colour “red” as specified in EN 12368 3.22 safety timings time settings that, in the event of

49、 an error, can affect the safety of the traffic signal control equipment 3.23 shuttle signals set of traffic signals controlling a narrow section of road where traffic can only proceed in each direction alternately 3.24 signal dynamic message supplied to road users BS EN 12675:2017EN 12675:2017 (E) 9 3.25 signal group group of signal heads that always receive identical signal light indications 3.26 signal head device which comprises one or more optical units, including the housing(s), together with all the mounting brackets, fixings, hoods, visors, co