集中联锁结合电路一般原则

RAILWAYINDUSTRYSTANDARD

OFTHEPEOPLES'REPUBLICOFCHINA

GeneralPrinciplesforCombinedCircuitof

CentralizedInterlocking

TB/T2307-2017

'

IssuedbyNationalRailwayAdministrationofthePeoplesRepublicofChina

IssuedDate:June5,2017

ValidDate:January1,2018

ChinaRailwayPublishingHouseCo.,Ltd.

Beijing2022

图书在版编目CIP数据

()

集中联锁结合电路一般原则英文

:TB/T2307-2017:/

国家铁路局编著北京中国铁道出版社有限公司

.—:,2022.1

ISBN978-7-113-28807-5

集国铁路信号电气集中联锁

Ⅰ.①…Ⅱ.①…Ⅲ.①--

行业标准中国英文

--Ⅳ.①U284.36-65

中国版本图书馆数据核字第号

CIP(2022)013097

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ChineseversionfirstpublishedinthePeoplesRepublicofChinain2017

'

EnglishversionfirstpublishedinthePeoplesRepublicofChinain2022

byChinaRailwayPublishingHouseCo.,Ltd.

'

No.8,YouanmenWestStreet,XichengDistrict

Beijing,100054

PrintedinChinabyBEIJINGCONGREATPRINTINGCO.,LTD.

'

Ź2017byNationalRailwayAdministrationofthePeoplesRepublicofChina

Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformor

byanymeans,electronicormechanical,includingphotocopying,recording,orbyany

informationstorageandretrievalsystems,withoutthepriorwrittenconsentofthepublisher.

Thisbookissoldsubjecttotheconditionthatitshallnot,bywayoftradeorotherwise,

'

belent,resold,hiredoutorotherwisecirculatedwithoutthepublisherspriorconsent

inanyformofbindingorcoverotherthanthatinwhichitispublishedandwithouta

similarconditionincludingthisconditionbeingimposedonthesubsequentpurchaser.

ISBN978-7-113-28807-5

IntroductiontotheEnglishVersion

TopromotetheexchangeandcooperationinrailwaytechnologybetweenChinaandtherestof

theworld,PlanningandStandardResearchInstituteofNationalRailwayAdministration,

'

entrustedbyNationalRailwayAdministrationofthePeoplesRepublicofChina,organizedthe

translationandpreparationofChineserailwaytechnologyandproductstandards.

GeneralPrinciplesforCombinedCircuitof

ThisstandardistheofficialEnglishversionof

CentralizedInterlocking

(TB/T2307-2017).TheoriginalChineseversionofthisstandardwas

'

issuedbytheNationalRailwayAdministrationofthePeoplesRepublicofChinaandcameinto

effectonJanuary1,2018.Incaseofdiscrepanciesbetweenthetwoversions,theChineseversion

'

shallprevail.NationalRailwayAdministrationofthePeoplesRepublicofChinaownsthecopyrightof

thisEnglishversion.

YourcommentsareinvitedfornextrevisionofthisstandardandshouldbeaddressedtoTechnology

andLegislationDepartmentofNationalRailwayAdministrationandPlanningandStandard

ResearchInstituteofNationalRailwayAdministration.

Address:TechnologyandLegislationDepartmentofNationalRailwayAdministrationatNo.6

FuxingRoad,Beijing100891,P.R.China.

PlanningandStandardResearchInstituteofNationalRailwayAdministrationatBlockB,Jiangong

Building,No.1,GuanglianRoad,XichengDistrict,Beijing,100055,P.R.China.

ThetranslationwasperformedbyFanTingting,HuangShuangning,WangYongqiang,ZhuRuiqi,

ZhaoLi,andHuangYaqian.

ThetranslationwasreviewedbyFengMei,WangHaizhong,WangJin,ZhangWenhui,MuJiancheng,

LiMing,XueJigangandZhaoLin.

1

NoticeofNationalRailwayAdministrationonIssuingtheEnglishVersionof

EightChineseRailwayTechnicalStandardsincludingTechnical

SpecificationforLayingofHighSpeedTurnoutsforSlabTrack

DocumentGTKF〔2021〕No.33

TechnicalSpecificationforLayingofHigh

EightChineserailwaytechnicalstandardsincluding

SpeedTurnoutsforSlabTrack

(TB/T3302-2013)areissued.Incaseofdiscrepanciesbetweenthe

twoversions,theChineseversionshallprevail.

ChinaRailwayPublishingHouseisauthorizedtopublishanddistributetheEnglishversionof

thesestandards.

AttachedhereisalistoftheEnglishversionofthesestandards.

S/NChinesetitleEnglishtitleStandardnumber

高速铁路无砟轨道道岔铺设技

TechnicalSpecificationforLayingofHighSpeedTurnouts

1术条件TB/T3302-2013

forSlabTrack

高速铁路有砟轨道道岔铺设技

TechnicalSpecificationforLayingofHighSpeedTurnouts

2术条件TB/T3306-2013

forBallastedTrack

客运专线钢轨伸缩调节器

3RailExpansionJointofPassengerDedicatedLineTB/T3401-2015

客货共线铁路钢轨伸缩调节器RailExpansionJointofMixedPassengerandFreight

4TB/T3518-2018

Railway

弹性支承块式无砟轨道部件

5第部分混凝土支承块LowVibrationTrackComponents—Part1:ConcreteBlockTB/T3515.1-2018

1:

铁路桥梁钢支座

6SteelBearingsforRailwayBridgeTB/T1853-2018

铁路数字移动通信系统

(GSM-R)GlobalSystemforMobileCommunications-Railway(GSM-

7设备机车综合无线通信设备TB/T3375-2018

R)—CabIntegratedRadioCommunicationEquipment

集中联锁结合电路一般原则GeneralPrinciplesforCombinedCircuitofCentralized

8TB/T2307-2017

Interlocking

'

NationalRailwayAdministrationofthePeoplesRepublicofChina

October28,2021

3

Contents

………………

ForewordⅡ

………………

1Scope1

………………

2General1

…………………

3CombinationwithSectionBlock1

…………………

4CombinationwithLiaisonLinebetweenYards3

…………………

5LocomotiveDepotLiaisonCircuit6

……

6HeavyDownGradeApproachingSuccessiveRouteCircuit6

……

7CombinedCircuitofReceiving-departureTrackwithBranchingTurnout7

………………………

8Non-routeShuntingCircuit7

……………………

9LocalControlTurnoutCircuit8

…………

10ThroughButtonCircuit8

……………

11StationCodingCircuit9

…………

12RepeatingSignalCircuit9

……………

13RouteIndicatorCircuit9

………………………

14ShuntingIndicatorCircuit9

………

15CombinationwithRadioSignallingandTrainProtectionforShuntingLocomotive(STP)9

………

16CombinationwithTrafficControlSystem9

………………

17CombinationwithTrainControlCenter(TCC)10

…………………

18CombinationwithRadioBlockCenter(RBC)10

…………………

19CombinationwithCentralizedSignalingMonitoringSystem10

………………

20CombinationwithZPW-2000SeriesTrackCircuitinStation11

………………

21CombinationwithAutomationSystemofMarshallingStation11

Ⅰ

Foreword

ThisstandardisdraftedinaccordancewiththerulesgiveninGB/T1.1-2009.

Technicalspecificationsforcombinedcircuitof

ThisstandardreplacesTB/T2307-1992

electricinterlocking.

ComparedwithTB/T2307-1992,themaintechnicalchangesexceptfor

editorialchangesareasfollows:

———Therequirementsfortheuseofdatacommunicationorothercombinedmethods,protective

measurestobetaken,linesofdatacommunicationtransmission,andrelevantprotocolsof

communicationtransmissionin"General"areadded(see2.3,2.5,2.6and2.10);

———Therequirementsfortokendeparturearedeleted(see3.1in1992edition);

———"Combinationwiththree-aspectautomaticblock"ismodifiedto"combinationwithautomatic

block"(see3.1,and3.2in1992edition);

———Therequirementsofthevalidationofcompletetrain-setarrivalin"thecombinationwith

relaysemi-automaticblock"aredeleted(see3.4.5in1992edition);

———Therequirementsofshuntingwithinstationfortheeffectonblockingandtherequirements

when"bidirectionalfacingdepartureconflict"existsincircuitstructureareaddedin"the

combinationwithsemi-automaticblock"(see3.2.6and3.2.7);

———Therequirementsof"thecombinationwithautomaticinter-stationblock"areadded(see3.3);

———Therequirementsof"sectiondirectionalcircuit"areadded(see3.4);

———Therequirementsof"thecombinationwithliaisoncircuitbetweenstations"areadded(see3.5);

———Therequirementsof"thecombinationofcentralizedtrafficcontrolanddispatchingsupervision"

aredeleted(seechapter6in1992edition);

———Therequirementsof"automaticthroughbuttoncircuit"aredeleted(see7.6in1992edition);

———Therequirementsof"stationcodingcircuit"areadded(seechapter11);

———Therequirementsof"repeatingsignalcircuit"areadded(seechapter12);

———Therequirementsof"departureindicatorcircuit"aredeleted(see7.9in1992edition);

———Therequirementsof"thecombinationwithradiosignallingandtrainprotectionfor

shuntinglocomotive(STP)"areadded(seechapter15);

———Therequirementsof"thecombinationwithtrafficcontrolsystem"areadded(seechapter16);

———Therequirementsof"thecombinationwithtraincontrolcenter(TCC)"areadded(seechapter17);

———Therequirementsof"thecombinationwithradioblockcenter(RBC)"areadded(seechapter18);

———Therequirementsof"thecombinationwithcentralizedsignalingmonitoringsystem"are

added(seechapter19);

———Therequirementsof"thecombinationwithZPW-2000seriestrackcircuitinstation"are

added(seechapter20);

———Therequirementsof"thecombinationwithautomationsystemofmarshallingstation"are

added(seechapter21).

ThisstandardisproposedandmanagedbyCRSCResearch&DesignInstituteGroupCo.,Ltd.

ThisstandardisdraftedbyCRSCResearch&DesignInstituteGroupCo.,Ltd.

ThisstandardismainlydraftedbyLiMing,LiuYanfeng,LuZhenpeng,PanJijun,

ChengGuanghong,HuBin,ShiYulin,FuGangandChenLihua.

Thepreviousversionofthestandardreplacedbythisstandardisasfollows:TB/T2307-1992.

Ⅱ

GeneralPrinciplesforCombinedCircuitofCentralizedInterlocking

1Scope

Thisstandardisgeneralrequirementsforthecombinationofcentralizedinterlocking,which

establishesthecombinationbetweencentralizedinterlockingandsectionblock,liaisonbetweenyards,

radiosignallingandtrainprotectionforshuntinglocomotive,trafficcontrolsystem,traincontrol

center,radioblockcenter,centralizedsignalingmonitoringsystem,ZPW-2000seriestrackcircuitin

station,andcombinationwithautomationsystemofmarshallingstation,aswellasgeneralprinciples

oflocomotivedepotliaisoncircuit,heavydowngradeapproachingsuccessiveroutecircuit,combined

circuitofreceiving-departuretrackwithbranchingturnout,thenon-routeshuntingcircuit,local

controlturnoutcircuit,throughbuttoncircuit,stationcodingcircuit,repeatingsignalcircuit,route

indicatorcircuit,andshuntingindicatorcircuit.

Thisstandardappliestoresearch,design,testing,andapplicationofthecombinationofcentralized

interlockingwithothersystem.Inaddition,thedesignandresearchofcentralizedinterlockingand

othercombinedcircuitscanbeimplementedforreference.

2General

2.1

Thecombinedcircuitsrelatedtotrainoperationsafetyshallcomplywiththe"fail-safe"principle

ofrailwaysignaling.

2.2

Whenrepeatingrelayisaddedincombinedcircuits,theconsequenceswhichendangeringtrain

operationsafetyduetoinconsistentrelayactionshallbeprevented.Whenrelaycontactsareshared,

unexpectedpowersupplyviathesharedcontactsshallbeprevented.

2.3

Whendatacommunicationorothercombinationmethodsareused,theconsequenceswhich

endangeringtrainoperationsafetyduetotransmissionerrors,informationloss,informationdelay,

etc.shallnotbecaused.

2.4

Theelectriclinesleadingtooutdoorsshallnotusetheearthasworkloop.

2.5

Protectivemeasuresshallbetakentopreventconsequenceswhichendangeringtrainoperation

safetycausedbyindoorlinebreak,andoutdoorlinebreak,mixedline,shortcircuitandgrounding.

2.6

Electricisolationmeasuresshallbetakenfordatacommunicationtransmissionlinesbetween

systems.

2.7

TheACpowerledtotheoutdoorsshallbeprotectedbyacircuitbreaker;theDCpowerledto

theoutdoorsshallbesuppliedbyarectifierdeviceandaseparatepowersupplymoduleshallbeinstalledwhen

theDCpowerisdirectlysuppliedbythepowerpanel.

2.8

Inelectrictractionsection,anti-electrifiedinterferencemeasuresshallbeconsidered.

2.9

Lightningprotectionmeasuresshallbetakeninaccordancewithrelevantregulations.

2.10

Thetransmissionofinter-systemcommunicationmethodsshallcomplywithrelevantprotocolstandards.

3CombinationwithSectionBlock

3.1CombinationwithAutomaticBlock

3.1.1

Relevantinformationshallbeprovidedtothesectionaccordingtothedisplaysofhomesignal

·1·

androutesetting.

3.1.2

Thefollowinginformationshallbeprovidedtothestation:

a)Tracksectioninformationrequiredforapproachlocking;

b)Tracksectioninformationrequiredforstartingsignalatclear;

c)Therequiredinformationforthecontrolconsoletodisplaytheapproaching&departureofa

train,approachingaudionotificationandsectionalarm;

d)Otherrequiredinformation.

3.2CombinationwithSemi-automaticBlock

3.2.1

Theconditionsofsectionblockshallbecheckedbeforethestartingsignaliscleared,andthe

checkingshallbekeptcontinuouslyduringthesignalbeingatclear.

3.2.2

Afterthedeparturerouteislocked,theblockshallnotbecancelledarbitrarily.Tocancelthe

block,thedeparturerouteshallbereleasedfirstly.

3.2.3

Whenthetrainstartsandoccupiesthedepartureroute,theblockshallnotbereleased

automaticallywithoutmanualhandling.

3.2.4

Theapproachingtrainshalloccupytheapproachingsectionandthefirsttracksectionin

advanceofthehomesignaltoconstitutethetrainarrivalconditions.

3.2.5

Thecontrolconsoleshallbeequippedwithblockbutton,recoverybuttonandfailurerecovery

buttonwithleadseal,receivingblockindicator,departureblockindicatorandfailurerecoverycounter.

3.2.6

Theshuntingwithinstationshallnotaffectthehandledblockstate.

3.2.7

"Facingdepartureconflict"shallnotoccurforthecircuit.

Note:"Facingdepartureconflict"meansthattwoadjacentstations(posts)simultaneouslyput

thestartingsignalsatcleartothesamesectionline.

3.3CombinationwithAutomaticInter-stationBlock

3.3.1

Afterthedeparturerouteisestablished,theautomaticinter-stationblockshallbeformedautomatically.

3.3.2

Theautomaticinter-stationblockconditionsshallbecheckedforclearingthestartingsignal,

andtheconditionsshallbecheckedcontinuouslyduringthesignalbeingatclear.

3.3.3

Afterthetrainentersthedepartureroute,thestartingsignalshallbeatstopautomatically.

Beforetheblockisreleased,thestartingsignalinthestationtowardsthesamesectioncannotbe

clearedagain.

3.3.4

Thefollowingstateindicationsshallbedisplayedonthecontrolconsole:

a)Receivinganddeparturestates;

b)Sectionclearedoroccupied;

c)Thesectiontrackdetectiondeviceisnormalorfailed;

d)Othercorrespondingbuttonsandindicatorsrequiredwhenaxlecounterorotherequipmentis

used.

3.3.5

"Facingdepartureconflict"shallnotoccurforthecircuit.

3.4SectionDirectionalCircuit

3.4.1

Whenthewholeblocksectionofbidirectionalautomaticblockorautomaticinter-stationblock

isclear,theoppositestationdoesnotsetthedepartureroute,andtherunningdirectionshallbe

automaticallychangedafterthedeparturerouteissetbytheoriginalreceivingstation.

3.4.2

Whentherunningdirectioncannotbechangedforsomereason,theauxiliarymethodcanbe

used.Aftertherunningdirectionischangedinauxiliarymode,thesectionshallbemanually

confirmedtobeclearwhenthestartingsignalisputatclearforthefirsttime.

3.4.3

Thecontrolconsoleshallbeequippedwithreceivingdirectionindicator,departuredirection

·2·

indicator,thewholesectionoccupiedindicator,auxiliarysettingindicator,receivinganddeparture

auxiliarysettingbutton,generalauxiliarysettingbutton,andauxiliarysettingcounter.Thedirection

changepermissionbuttoncanbesetasneeded.

3.4.4

"Facingdepartureconflict"shallnotoccurforthecircuit.

3.4.5

Thedirectionchangeoperationshallbeeffectiveonce,andthedirectionshallnotbechanged

automaticallywhentheconditionsarechangedfromnotbeingmettobeingmetintheprocessof

directionchangeforsomereason.

3.5LiaisonCircuitbetweenStations

3.5.1

Fortheoriginalreceivingstationinbidirectionalsection,whenthewholesectionisclear,

afterthedeparturerouteisset,therunningdirectioncanbechangedautomatically.Forthestationof

unidirectionalsection,afterthewholesectionischeckedtobeclear,thestartingsignalcanbeputat

clear.

3.5.2

Whenthereisanaspectcorrelationbetweenthestartingsignalandhomesignalinthesame

directionbetweentwostations,theapproachlockingsectionoftherouteprotectedbythehomesignal

shallstartfromthefirsttracksectioninadvanceofthestartingsignal.Whenthelengthofthe

approachlockingsectionisstilllessthantrainbrakingdistance,theapproachlockingsectionshallbe

extended.

3.5.3

Thecontrolconsoleshallbeequippedwiththewholesectionoccupiedindicatorsandhome

signalatclearindicatorsoftheadjacentstation.Thebidirectionalsectionshallalsobeequippedwith

trainrunningdirectionindicatorsandadjacentstationdepartureindicators.

3.5.4

"Facingdepartureconflict"shallnotoccurforthecircuit.

3.5.5

Whenthecomputerinterlockingequipmentiscombinedwiththeliaisoncircuitbetween

stations,afterthecomputerinterlockingequipmentisstarted-up,thecross-checkrelationshallnotbe

automaticallycancelledwithoutmanualsetting.

4CombinationwithLiaisonLinebetweenYards

4.1CombinedCircuitsofLiaisonLinebetweenYards

4.1.1

Wheneachyardofthestationiscontrolledbyindependentinterlockingequipment,theliaison

circuitshallbesetineachyard.Theliaisoncircuitbetweenyardsshallmeettherequirementsof

unidirectionalorbidirectionaloperationoftrainsorshuntingtrainsetswithorwithoutreceivingroute

signalontheliaisonline.

4.1.2

Whenanyofthetracksectionoftheliaisonlinebetweenyardsisoccupied,theroutetowards

theliaisonlineshallnotbeset,exceptforcalling-onroute.

4.1.3

Afteranyyardarrangesitsroutetoliaisonlinebetweenyards,therouteofanotheryardtowardsthe

liaisonlineshallnotbeset.

4.1.4

Whenthereisanaspectcorrelationbetweentwoadjacenttrainsignalsinthesamedirectionon

theliaisonline,thecombinedcircuitsshallmeettherequirementsofsignalaspect.

4.1.5

Fortwotrainsignalsinthesamedirectionbelongingtotwoyardsrespectively,whenthereis

anaspectcorrelationbetweenthem,theapproachsectionoftheadvancesignalshallstartfromthe

firstsectionprotectedbytherearsignal.Whentheapproachsectionoftheadvancesignalislessthan

thebrakingdistanceofthetrain,theapproachlockingsectionshallbeextended.

4.1.6

Whenthereisnotrainsignalontheliaisonline,thetrainrouteshallbecomposedoftwoparts

controlledbytwoyardsseparately.Onlywhenthebothsegmentsofroutearelockedcanthesignalbe

putatclear,andthesignalcanbeputatstopatanytimebybothyards.Whenreleasingroute,the

·3·

precededsegmentcanbereleasedonlyaftertheadvancesegmentisreleased.Whentheadvance

segmentisoccupied,theprecededsegmentshallnotbereleased.

4.1.7

Thecontrolconsoleineachyardshallbeequippedwithcross-checkindicatorstosupervisethe

routesettingfromotheryardstoliaisonline,liaisontrackoccupied/unoccupiedstates,andsignalat

clear(oragreetodepart)indicatorsofadjacentyard.Otherindicatorsorcorrespondingpromptscan

besetasneeded.

4.1.8

Whenthecomputerinterlockingequipmentiscombinedwiththeliaisoncircuitbetweenyards,

afterthecomputerinterlockingequipmentisstarted-up,thecross-checkrelationshallnotbeautomatically

cancelledwithoutmanualhandling.

Note:"cross-checkrelation"referstocheckrelationsamongsignalingequipmentrooms,yardsor

bothendsonthesamestationtrack.

4.2CombinedCircuitsofCrossoverTurnoutbetweenYards

4.2.1

Crossoverturnoutsshallbecontrolledbyoneyard,andlockedatthenormalpositionwhich

separatingtwointerlockingareasforprotection.Thepositionswitchingoftheturnoutshallbeagreed

bytheotheryard.

4.2.2

Aftertheturnoutisreturnedtonormalposition,theagreementcanbecancelledatanytime.

4.2.3

Forsettingarouteviareversepositionoftheturnout,thesignalshallbeputatclearonly

aftercheckingtheagreementofotheryard.

4.2.4

Thetrainorshuntingrouteswhichpassingthroughthecrossoverturnoutshallconsistoftwo

partsofrouteoftwoyards.Thesignalcanbeclearedonlyafterbothroutesarelocked,andthesignal

canbeputatstopatanytimebybothyards.Whenreleasingroute,theprecededsegmentcanonlybe

releasedaftertheadvancesegmentisreleased.Whentheadvancesegmentisoccupied,thepreceded

segmentshallnotbereleased.

4.2.5

Thefollowingbuttonsandindicatorsshallbesetonthecontrolconsolesoftwointerlocking:

a)Theagreetomoveturnoutindicatorshallbesetintheinterlockingcontrollingthecrossover

turnout;

b)Theagreetomoveturnoutbuttonshallbesetintheotherinterlocking;

c)Normalpositionindicatorandreversepositionindicatorofturnouts;

d)Sectionoccupiedindicatorsandsignalatclearindicatorscanalsobeprovidedasneeds.

4.3CombinedCircuitsbetweenArrivingYardandHump

4.3.1

Thereceivingyardshallgettheagreementfromhumpsignalingequipmentroomwhensetting

ahumpingroutefromreceivingyardtohump.

4.3.2

Whenthe"Permittopush"operationishandledinhumpshuntingyard,thehumpauxiliary

andrepeatingsignalshallfullyrepeattheindicationofthehumpsignal.Whenthe"Pre-push"

operationishandled,thehumpauxiliaryanditsrepeatingsignalshalldisplayyellowaspect,andthe

humpauxiliaryanditsrepeatingsignalshallbeputatstopautomaticallywhenthetrainhasbeen

propelledtothepredeterminedbrakingpointinrearofthehumpcrest.

4.3.3

Afterhumpingrouteisset,shuntingsignalonthehumpingrouteshallbeautomaticallyputat

clearorstopfollowingtheforwardorbackwardsignaldisplayedbythehumpauxiliarysignal.

4.3.4

Afterthehumpingrouteislocked,thehumpingroutecanbeautomaticallyreleasedonlywhen

thetrainsethasbeencompletelypushedoutofthearrivingyard.Ifthehumpingrouteisnotoccupied,

theoperatorinhumpsignalingequipmentroomshallbeabletousethepermit-to-pushorpre-push

buttontoputthesignalatstop,andthehumpingrouteshallbereleasedaftera30stimelimit.Ifthe

humpingrouteisoccupied,thehumpingrouteshallnotbecancelledarbitrarilybyhumpsignaling

·4·

equipmentroom,buthumpingsignalcanbeputatstop.

4.3.5

Afterthehumpingrouteissetandthehumpsignalisatclear,thearrivingyardshalllose

controlrightofthehumpingroute.Ifnecessary,cut-offhumpingsignalbuttoncanbepressedtoput

humpauxiliaryandrepeatingsignalatstop,butthehumpingrouteshallnotbereleased.

4.3.6

Thearrivingyardshallnotarrangetrainrouteorshuntingroutetostationtrackwhichhave

alreadysetuphumpingroute.Iftrainrouteorshuntingroutehasbeenarrangedonthestationtrack,

thehumpingrouteshallnotbehandledonit.

4.3.7

Humpsignalrepeaters,permit-to-pushindicatorsandshuntingcross-checkindicators,cut-off

humpsignalbuttonandindicators,etc.shallbesetonthecontrolconsoleofthearrivingyard.

4.4CombinedCircuitsofSimplifiedHumpingSignal

4.4.1

Whentheshuntingneckisconnectedwithnon-centrallyoperatedsimplifiedhump,theshuntingneck

shallbeusedasthehumppushingtrackofthesimplifiedhump.Theoperatorins