commiss direct decemb adapt technic progress council direct eec approxim law member state relat brake devic categori motor vehicl trailer eec commiss european commun regard treati establish european econom commun regard council direct eec februari approxim law member state relat type approv motor vehicl trailer amend direct eec articl thereof regard council direct eec juli approxim law member state relat brake devic categori motor vehicl trailer amend commiss direct eec view experi gain state art make requir stringent match close actual test condit adopt provis relat brake system anti lock devic devic fit complianc provis direct requir provis direct accord opinion committe adapt technic progress direct aim remov technic barrier trade motor vehicl sector commiss commun council road safeti year includ programm legisl action improv exist brake direct provis direct contribut improv road safeti adopt direct articl direct eec amend articl replac articl member state refus grant eec type approv nation type approv vehicl ground relat brake devic vehicl fit devic annex viii xii devic satisfi requir set annex ii iii iv vii viii ix direct eec amend annex xi xii ad accord annex direct articl octob member state ground relat brake devic refus respect type vehicl grant eec type approv issu copi certif provid indent articel direct eec grant nation type approv prohibit entri servic vehicl brake devic type vehicl vehicl compli provis direct eec amend direct april member state longer issu copi certif provid indent articl direct eec respect type vehicl brake devic compli provis direct eec amend direct refus grant nation type approv type vehicl brake devic compli provis direct eec amend direct octob member state prohibit entri servic vehicl brake devic compli provis direct eec amend direct articl octob member state bring forc provis order compli direct forthwith inform commiss thereof articl direct address member state brussel decemb commissioncockfieldvic presid oj oj oj oj final final annex amend annex direct eec amend direct eec eec eec annex definit requir construct fit item read definit purpos direct item item ad hydraul brake devic store energi hydraul brake devic store energi mean brake system energi suppli hydraul fluid pressur store accumul fed pressur pump fit mean limit pressur maximum manufactur categori trailer type semi trailer semi trailer mean tow vehicl axl posit centr graviti vehicl uniformli load equip connect devic permit horizont vertic forc transmit draw vehicl full trailer full trailer mean tow vehicl axl equip tow devic move vertic relat trailer control direct front axl transmit signific static load draw vehicl centr axl trailer centr axl trailer mean tow vehicl equip tow devic move vertic relat trailer axl posit close centr graviti vehicl uniformli load small static vertic load exceed maximum mass trailer kg whichev lesser transmit draw vehicl maximum mass consider classifi centr axl trailer mass transmit ground axl centr axl trailer coupl draw vehicl laden maximum load retard retard mean addit brake system capabl provid maintain brake effect long period time signific reduct perform term retard cover complet system includ control devic independ retard independ retard mean retard control devic separ servic brake system integr retard integr retard mean retard control devic integr servic brake system retard servic brake system appli simultan suitabl phase oper combin control devic combin retard combin retard mean integr retard addit cut devic combin control appli servic brake system item item ad pneumat connect motor vehicl trailer case brake devic oper compress air pneumat link trailer type line case requir direct satisfi line shut devic automat actuat permit case articul vehicl combin flexibl hose part draw vehicl case flexibl hose part trailer item read control independ readili access driver normal drive posit categori vehicl brake control exclud retard control design return fulli posit releas requir appli park brake control part combin control mechan lock appli posit item read part pedal bear master cylind piston hydraul system control valv hydraul pneumat system linkag pedal master cylind control valv brake cylind piston hydraul pneumat system lever cam assembl brake regard liabl breakag ampli dimens readili access mainten exhibit safeti featur equal prescrib essenti compon steer linkag vehicl failur part make imposs brake vehicl perform equal prescrib secondari brake part made metal materi equival characterist subject signific distort normal oper brake devic item read wheel select residu perform servic brake devic satisfi requir laid item annex ii item read made energi muscular energi driver sourc energi hydraul pump air compressor mean devic constitut sourc driven safe practic item item ad event failur part transmiss vehicl brake devic suppli part affect failur continu ensur requir purpos halt vehicl degre effect prescrib residu secondari brake condit met mean devic easili actuat vehicl stationari automat mean addit storag devic locat circuit devic event failur energi suppli full stroke actuat servic brake control condit prescrib item annex iv halt vehicl applic degre effect prescrib secondari brake hydraul brake devic store energi provis consid met provid requir item annex iv section satisfi item read wear brake easili compens mean system manual automat adjust addit control compon transmiss brake possess reserv travel suitabl mean compens brake heat brake line reach degre wear effect brake ensur adjust item read failur part hydraul transmiss system signal driver devic compris red tale lamp light actuat control remain lit long failur persist ignit start switch run posit devic compris red tale lamp light level fluid reservoir fall manufactur admiss tale lamp visibl daylight satisfactori condit lamp easili verifi driver driver seat failur compon devic entail total loss effect brake devic question item item ad case vehicl consid compli requir item virtu meet requir item annex iv section alarm devic consist acoust signal addit optic signal devic oper simultan provid meet requir acoust signal actuat optic signal acoust devic render inop handbrak appli choic manufactur case automat transmiss selector park posit item read prejudic requir item auxiliari energi sourc essenti oper brake devic energi reserv ensur engin stop event failur mean energi sourc driven brake perform remain suffici bring vehicl halt prescrib condit addit muscular energi appli driver park brake devic reinforc aid actuat park brake ensur event failur aid reserv energi independ suppli aid reserv energi indend servic brake express actuat cover action releas item delet subsequ paragraph renumb item number item ad case line air suppli system requir item consid met condit fulfil servic brake control draw vehicl fulli actuat pressur suppli line fall bar second suppli line evacu rate bar automat brake trailer oper pressur suppli line fall bar item number item ad case motor vehicl equip draw trailer electr servic brake requir met power suppli gener batteri motor vehicl suffici capac provid current electr brake system engin run idl speed recommend manufactur electr devic suppli manufactur standard equip vehicl switch voltag electr line maximum current consumpt electr brake system fall measur connect electr line capabl short circuit overload event failur draw vehicl servic brake devic devic consist independ unit unit unit affect failur capabl partial fulli actuat brake trailer stop light switch circuit actuat electr brake system permiss actuat line connect parallel stop light exist stop light switch circuit capabl take extra load item number item ad case pneumat servic brake devic compris independ section leakag section downstream control continu vent atmospher item read trailer categori fit servic brake devic continu semi continu type inertia overrun type type author trailer semi trailer electr servic brake conform requir annex xi permit item read wear brake easili compens system manual automat adjust addit control compon transmiss brake possess reserv travel suitabl mean compens brake heat brake line reach degre wear effect brake ensur adjust item item ad trailer categori fit line air suppli system satisfi condit item annex ii brake test perform brake devic item add end case tractiv unit semi trailer load posit approxim half kingpin posit result load condit centrelin rear axl item read text repeat unladen vehicl cae motor vehicl addit driver person front seat respons note result test case motor vehicl design draw semi trailer unladen test conduct vehicl solo condit includ mass repres wheel includ mass repres spare wheel includ standard specif vehicl case vehicl present bare chassi cab supplementari load ad simul mass bodi exceed minimum mass declar manufactur annex ix item read test prescrib item addit test carri speed engin connect lowest equal maximum speed vehicl highest equal speed maximum practic perform figur measur behaviour vehicl record test report tractiv unit semi trailer artifici load simul effect lade semi trailer test km item item ad type test vehicl categori equip compress air brake brake perform trailer calcul brake rate draw vehicl trailer measur thrust coupl case brake rate draw vehicl trailer trailer brake engin draw vehicl disconnect brake test case trailer brake account extra mass retard perform fulli develop deceler except case item determin brake rate trailer measur brake rate draw vehicl trailer thrust coupl draw vehicl meet requir laid appendix item annex ii regard relat ratio tm pm pressur pm brake rate trailer calcul formula zr zr prd zr brake rate trailer zr brake rate draw vehicl trailer thrust coupl tractic forc gt compress forc lt trailer continu semi continu brake devic pressur brake actuat chang brake dynam axl load shift case semi trailer trailer brake brake rate trailer calcul formul zr zr pm prpr roll resist altern evalu brake rate trailer brake trailer case pressur measur brake actuat brake combin item read end type test test item test item annex residu perform servic brake devic measur condit constant control forc greater forc type test engin disconnect temperatur condit motor vehicl residu perform prescrib categori question figur record type test engin disconnect case trailer residu brake forc peripheri wheel test km forc maximum mass born wheel vehicl stationari figur record type test speed item item ad case motor vehicl compli requir item hot perform test carri control forc exceed item annex result test enter report item read end test residu perform servic brake devic measur condit type test engin disconnect temperatur condit motor vehicl residu perform give stop distanc exceed valu control forc exceed categori term brake deceler categori term brake deceler case trailer residu brake forc peripheri wheel test km forc maximum mass born wheel vehicl stationari item add end integr retard provid suitabl phase servic brake appli verifi check brake remain cold defin item annex item amend tabl gt tabl gt item read secondari brake devic actuat brake function give stop distanc exceed valu categori term brake deceler categori term brake deceler categori term brake deceler item read perform secondari brake devic check type test engin disconnect initi speed km km km km km km item read remaind unchang check complianc requir annex item type test carri engin disconnect initi speed item relev vehicl categori fulli develop item item ad residu servic brake transmiss failur residu perform servic brake devic event failur part transmiss greater stop distanc deceler forc appli control exceed check type test engin disconnect initi speed relev vehicl categori gt tabl gt item read servic brake devic continu semi continu type sum forc exert peripheri brake wheel equal forc maximum mass born wheel vehicl stationari valu full trailer laden unladen semi trailer laden unladen centr axl trailer laden unladen trailer fit compress air brake pressur control line suppli line exce bar brake test test speed km supplementari test km carri laden vehicl comparison type test result item item ad case vehicl fit hydraul brake devic requir item consid satisfi emerg manoeuvr deceler vehicl pressur favour brake cylind reach level prescrib perform second appendix annex ii distribut brake effort vehicl axl eec item read gener requir vehicl categori equip anti lock devic defin annex meet requir appendix special devic oper automat item read remaind unchang height centr graviti manufactur agre technic servic conduct approv test hr height ground centr graviti semi trailer manufactur agre technic servic conduct approv test item read categori vehicl valu state load vehicl adhes util curv front axl situat rear axl brake rate case vehicl categori vehicl categori rang valu invers adhes util curv permit provid adhes util curv rear axl exce line defin formula line ideal adhes util diagram brake rate case vehicl categori condit consid satisfi brake rate adhes util curv axl situat parallel line ideal adhes util equat shown diagram adhes util curv rear axl cross line brake rate compli relat relat brake rate case categori condit consid satisfi brake rate adhes util curv axl situat parallel line ideal adhes util equat shown diagram adhes util curv rear axl brake rate compli relat item read case vehicl author draw trailer categori fit compress air brake test energi sourc stop suppli line block reservoir litr capac connect control line pressur full applic brake control bar coupl head suppli line bar coupl head control line irrespect load condit vehicl item read order verifii requir item manufactur provid adhes util curv front rear axl calcul formula ept ept graph plot load condit unladen run order driver board case vehicl present bare chassi cab supplementari load ad simul mass bodi exceed minimum mass declar manufactur annex ix laden provis made possibl load distribut front axl heavili laden consider item read case vehicl fit compress air brake trailer motor vehicl author draw trailer permiss relationship brake rate tr pr tmpm pressur pm area shown diagram item read tractiv unit unladen semi trailer unladen articul combin consid tractiv unit run order driver board coupl unladen semi trailer dynam load semi trailer tractiv unit repres static mass appli coupl king pin equal maximum mass coupl brake forc continu regul state tractiv unit semi trailer unladen solo tractiv unit brake forc relat solo tractiv unit verifi item read requir semi trailer semi trailer fit compress air brake system permiss relationship brake rate trpr pressur pm lie area deriv diagram laden unladen state load requir met permiss load condit semi trailer axl requir item satisfi conjunct requir item annex ii semi trailer kc factor semi trailer meet minimum brake perform item annex ii fit anti lock devic compli annex compat requir item annex item read requir full centr axl trailer full trailer fit compress air brake system requir set item appli twin axl trailer axl spread metr full trailer axl subject requir contain item centr axl trailer fit compress air brake system permiss relationship brake rate tr pr pressur pm lie area deriv diagram multipli vertic scale laden unladen state load requir item annex ii satisfi due lack adhes centr axl trailer fit anti lock devic compli annex item read pressur test connect brake system incorpor devic refer item fit pressur test connect pressur line upstream downstream devic closest readili access posit downstream connect requir pressur point check connect requir item annex iii pressur test connect compli claus iso standard diagram titl read vehicl categori vehicl categori octob item diagram titl read vehicl vehicl categori diagram add te te lower limit corridor applic adhes util rear axl diagram add diagram gt start graphic gt lt aa gt diagram lt aa gt vehicl categori lt gt lt aa gt except octob lt aa gt item lt aa gt lt aa gt lt aat gt lt aan gt lt aa gt lt gt lt gt lt aa gt lt gt lt gt gt end graphic gt te lower limit corridor applic adhes util rear axl diagram add te te diagram number exist te annex iii method measur reaction time vehicl fit compress air brake devic item read reaction time brake devic determin vehicl stationari pressur measur open favour brake cylind case vehicl fit combin compress air hydraul brake system pressur measur open favour pneumat unit item read independ circuit brake system pressur test connect fit closest readili access posit brake cylind favour reaction time concern item read pressur test connect compli claus iso standard annex iv energi reservoir sourc energi amend annex iv titl add compress air brake system item read reservoir replenish test item item ad draw vehicl vehicl coupl categori vehicl author compli requir vehicl author case test item conduct reservoir mention item annex item read pressur test connect fit closest readili access posit favour reservoir mean item annex item read pressur test connect compli claus iso standard item section ad vacuum brake system capac reservoir gener vehicl oper brake devic requir vacuum equip reservoir capac meet requir item reservoir requir prescrib capac brake system absenc energi reserv achiev brake perform equal prescrib secondari brake system verifi complianc requir item brake adjust close motor vehicl reservoir motor vehicl achiev perform prescrib secondari brake full stroke actuat servic brake control energi sourc vacuum pump full stroke actuat servic brake control energi sourc engin test perform conform requir initi energi level reservoir manufactur enabl prescrib servic brake perform achiev correspond vacuum exceed maximum vacuum furnish energi sourc reservoir fed test auxiliari servic reservoir isol motor vehicl coupl trailer author suppli line stop reservoir litr capac connect control line test refer item vacuum level provid control line fallen level equival half figur obtain brake applic trailer categori reservoir trailer equip vacuum level provid user point fallen level equival half obtain brake applic test compris full stroke actuat trailer servic brake test perform conform requir initi energi level reservoir manufactur enabl prescrib servic brake perform achiev reservoir fed test auxiliari servic reservoir isol capac energi sourc gener start ambient atmospher pressur energi sourc capabl achiev reservoir minut initi level item case motor vehicl coupl trailer author time achiev level condit item exce minut condit measur speed vacuum sourc vacuum sourc vehicl engin engin speed obtain vehicl stationari neutral gear engag engin idl vacuum sourc pump speed obtain engin run speed maximum power output vacuum sourc pump engin equip governor speed obtain engin run maximum speed allow governor intend coupl motor vehicl trailer servic brake system vacuum oper trailer repres energi storag devic capac litr determin formula maximum permiss mass tonn axl trailer hydraul brake system store energi capac storag devic energi accumul gener vehicl brake devic requir store energi provid hydraul fluid pressur equip energi storag devic energi accumul capac meet requir item energi storag devic requir prescrib capac brake system absenc energi reserv servic brake control achiev brake perform equal prescrib secondari brake system verifi complianc requir item brake adjust close item rate full stroke actuat provid interv minut actuat motor vehicl motor vehicl equip hydraul brake system store energi meet requir full stroke acut servic brake control achiev ninth applic perform prescrib secondari brake system test perform conform requir test commenc pressur manufactur higher cut pressur accumul fed addit auxiliari equip accumul isol motor vehicl equip hydraul brake system store energi meet requir item annex deem satisfi item requir met singl transmiss failur full stroke actuat servic brake control achiev ninth applic perform prescrib secondari brake system secondari perform requir store energi achiev separ control full stroke actuat achiev ninth applic residu perform prescrib item annex test perform conform requir energi sourc stationari oper speed engin idl speed transmiss failur induc induc failur energi storag devic pressur manufactur exceed cut pressur auxiliari equip accumul isol capac hydraul fluid energi sourc energi sourc meet requir set paragraph definit repres maximum system oper pressur cut pressur accumul manufactur repres pressur full stroke actuat servic brake control start fed accumul repres time requir pressur rise accumul applic brake control condit measur test determin time feed rate energi sourc obtain engin run speed maximum power speed allow speed governor test determin time accumul auxiliari equip isol automat interpret result case vehicl categori time exce second case vehicl categori time exce second characterist alarm devic engin stationari commenc pressur manufactur exce cut pressur alarm devic oper full stroke actuat servic brake control annex spring brake item read definit spring brake brake devic energi requir brake suppli spring act energi accumul spring compress chamber mean chamber pressur variat induc compress spring produc compress spring obtain mean vacuum devic pressur neg pressur annex item read spring brake servic brake event failur part transmiss servic brake spring brake achiev residu perform prescrib item annex provid driver graduat action case motor vehicl except draw vehicl semi trailer meet requir item annex spring brake sole sourc residu brake vacuum spring brake trailer item read small variat pressur limit occur spring compress chamber feed circuit signific variat brake forc item read feed circuit spring compress chamber includ energi reserv fed independ energi reserv trailer suppli line branch feed line condit pressur drop trailer suppli line appli spring brake actuat auxiliari equip draw energi feed line spring brake actuat condit oper event damag energi sourc energi reserv spring brake actuat fall level releas spring brake actuat item appli trailer item read case motor vehicl pressur spring compress chamber spring begin actuat brake adjust close greater minimum level normal pressur case trailer pressur spring compress chamber spring begin actuat brake greater obtain full stroke actuat servic brake accord annex iv item initi pressur fix bar item read pressur line feed energi spring compress chamber exclud line auxiliari releas devic fluid pressur fall level brake part begin move optic audibl warn devic actuat provid requir met warn devic item annex provis appli trailer item read spring brake system design event failur system releas brake achiev auxiliari releas devic pneumat mechan auxiliari releas devic energi reserv releas draw energi energi reserv independ energi reserv spring brake system pneumat hydraul fluid auxiliari releas devic act piston surfac spring compress chamber normal spring brake system condit auxiliari releas devic separ line junction line normal line connect control devic spring brake actuat spring brake actuat immedi port spring compress chamber integr bodi actuat junction includ devic prevent influenc line requir item annex appli devic annex vii case type ii iia test carri vehicl submit type approv item read type ii iia test carri vehicl submit type approv case item item ad vehicl concern trailer equip cam air oper brake satisfi verif requir appendix annex relat report refer axl test shown appendix annex item item ad item applic tabl item model commun annex ix complet item appendic ad appendix altern procedur type type ii test trailer brake gener accord item annex type ii fade test waiv time type approv vehicl provid brake system compon compli requir appendix result predict brake perform meet prescript direct vehicl categori test carri accord method detail appendix deem meet requir symbol definit refer brake symbol suffix normal reaction road surfac axl static condit camshaft input torqu cmax maximum technic permiss camshaft input torqu threshold camshaft input torqu minimum camshaft torqu produc measur brake torqu tyre roll radiu dynam brake forc tyre road interfac brake torqu brake rate rpm actuat stroke work stroke free stroke sp effect stroke stroke output thrust averag thrust tha tha averag thrust averag thrust determin integr valu third total stroke smax gt start graphic gt lt aelm gt lt aa gt thrust lt aat gt lt aan gt lt aat gt lt aan gt lt gt lt aat gt max lt aan gt lt gt lt aat gt max lt aan gt lt aat gt lt aan gt lt aat gt max lt aan gt stroke lt aa gt lt gt lt aa gt lt aa gt lever length lt aa gt lt aa gt lt aa gt radiu brake drum lt aa gt lt aa gt lt aa gt brake actuat pressur gt end graphic gt test method track test brake perform test prefer carri singl axl result test combin axl accord item provid axl contribut equal brake energi input drag residu brake test ensur ident axl brake geometri figur line wheel mount tyre actuat pressur distribut actuat result record combin axl averag axl axl prefer load maximum static axl mass essenti provid due allow made test differ roll resist caus mass test axl allow made effect increas roll resist result combin vehicl carri test initi speed test prescrib final speed calcul formula wwwww initi speed km final speed km po mass draw vehicl kg test condit mass trailer born brake axl kg mass trailer born brake axl kg inertia dynamomet test test machin rotari inertia simul part linear inertia vehicl mass act wheel cold perform residu perform test capabl oper constant speed purpos test item test carri complet wheel includ tyre mount move part brake vehicl inertia mass connect brake directli tyre wheel air cool veloc air flow direct simul actual condit heat run speed air flow greater km temperatur cool air ambient temperatur tyre roll resist automat compens test torqu appli brake modifi subtract torqu equival roll resist coeffici roll road dynamomet test axl prefer load maximum static axl mass essenti provid due allow made test differ roll resist caus mass test axl air cool veloc air flow direct simul actual condit heat run speed air flow greater km temperatur cool air ambient temperatur brake time durat maximum build time test condit test brake instrument measur continu record enabl brake torqu forc peripheri tyre determin continu record air pressur brake actuat speed test initi temperatur brake drum brake actuat stroke type test type ii residu brake stop test procedur supplementari cold perform test test carri initi speed equival km order evalu residu brake perform end type type ii test brake applic made pressur initi speed equival km approxim equal initi brake temperatur exceed oc measur surfac drum applic brake actuat pressur requir give brake torqu forc equival brake rate brake actuat pressur exce bar camshaft input torqu exce maximum technic permiss camshaft input torqu cmax averag result cold perform type test test carri speed equival km initi brake temperatur exceed oc measur surfac drum brake rate maintain includ roll resist item durat test minut second km km test veloc achiev durat test lengthen item annex ii second end type fade test residu perform test carri accord item annex ii initi speed equival km brake actuat pressur cold perform test type ii test test carri speed equival km initi brake temperatur exceed oc measur surfac drum brake rate maintain includ roll resist item durat test minut km km second end type ii fade test residu perform test carri accord item annex ii initi speed equival km brake actuat pressur cold perform test test report result test carri accord item report form model shown appendix annex brake axl identifi particular brake axl technic permiss mass number test report mark axl verif verif compon brake specif vehicl type approv verifi satisfi design criteria gt tabl gt verif brake forc develop brake forc subject brake control line pressur pm produc drag forc type type ii test condit determin method item axl exce pe prmax type type ii test compon vari camshaft input torqu axl control line pressur pm actuat pressur axl common control line pressur pm axl trailer prmax compon ident brake lever length axl axl axl type similari verif residu perform brake forc subject brake pressur actuat control line pressur pm type test subject trailer determin method item predict actuat stroke subject brake determin relationship sele exce effect stroke sp averag thrust output tha actuat fit subject brake pressur item determin camshaft input torqu tha exce cmax predict brake perform subject brake te ce coe rer predict brake perform subject trailer tr pr ót ór residu perform type ii test determin accord item result predict item satisfi requir direct subject trailer figur record type test prescrib annex ii item figur record type test subject trailer appendix model refer axl test report form prescrib appendix item test report identif axl manufactur address make type model technic permiss mass pe kg brake manufactur address make type model technic permiss camshaft input torqu cmax brake drum intern diamet mass materi attach dimens draw figur brake line manufactur type identif visibl line mount brake shoe width thick surfac area method attach brake geometri attach dimens draw figur wheel singl twin rin diamet attach dimens draw figur tyre roll radiu refer mass actuat manufactur type cylind diaphragm model lever length record test result correct account roll resist gt tabl gt technic servic conduct test date test test carri result report accord direct eec amend annex vii appendix signedd gt start graphic gt lt aa gt lt aa gt figur lt aepd gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aa gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aert gt lt aeuv gt lt aa gt lt aa gt lt aejgc gt lt aevc gt lt aet gt drumwidth lt aat gt lt aan gt lt aetc gt lt gt axleload kg lt aetc gt lt gt tyre lt aetc gt lt gt rim lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt mm lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aet gt lt gt lt aa gt lt aerf gt lt aefn gt lt aerf gt lt aeuv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt gt end graphic gt gt start graphic gt lt aa gt figur lt aa gt brake geometri lt aa gt lt aa gt length mm lt aepd gt lt gt lt gt lt gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aan gt lt aat gt lt aat gt lt aan gt lt aan gt lt aat gt lt aat gt lt aan gt lt aan gt lt aepd gt lt aeic gt dimens lt aat gt lt aat gt lt aan gt lt aan gt lt aat gt lt aat gt lt aan gt lt aan gt mm brake surfac lt ss gt brake cm lt aah gt lt aan gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aeta gt lt aert gt lt aeuv gt lt aa gt lt aa gt lt aejgc gt lt aet gt type brake lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aat gt lt aan gt lt aan gt lt aetc gt lt gt lt aat gt lt aat gt lt aan gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aan gt lt aetc gt lt gt lt aat gt lt aat gt lt aan gt lt aan gt lt aetc gt lt gt lt aat gt lt aat gt lt aan gt lt aan gt lt aetc gt lt gt lt aat gt lt aat gt lt aan gt lt aan gt lt aa gt lt aet gt lt gt lt aa gt lt aerf gt lt aefn gt lt aerf gt lt aeuv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt lt aerv gt gt end graphic gt annex viii condit govern test vehicl equip inertia overrun brake item delet item renumb amend read inertia brake devic arrang case coupl head travel fullest extent part transmiss jam suffer perman distort fail check uncoupl element transmiss brake control lever item item ad inertia brake devic trailer revers tow vehicl impos sustain drag forc exceed forc maximum mass trailer devic purpos act automat disengag automat trailer move forward item item ad special devic incorpor purpos item park perform face gradient advers affect item delet subsequ item renumb item number read maximum depress forc exce gma case singl axl trailer gma case multi axl trailer item delet item renumb item read forc pressur requir achiev brake torqu mmax manufactur time forc time pressur requir give brake forc gbo item sentenc read speed brake surfac rotat correspond initi vehicl speed km deduct curv obtain measur item read sum brake forc exert circumfer trailer wheel ga includ roll resist ga repres brake forc ga case maximum permit thrust coupl ga case multi axl trailer ga case singl axl trailer order check condit observ inequ appli item read case control devic multi axl trailer brake rod system depend posit tow devic travel control greater travel control sm differ length equival loss travel travel exce effect travel sm appendix item delet appendix item delet subsequ item renumb item read brake conform requir item test condit vehicl equip inertia brake signatur appendix item read permiss forc coupl ga da ga da requir brake forc ga da brake forc ga da item delet item renumb annex ix commun type approv vehicl regard brake item read mass vehicl maximum mass vehicl minimum mass vehicl item read applic maximum mass trailer coupl full trailer semi trailer centr axl trailer maximum ratio coupl overhang wheelbas maximum mass combin item item ad vehicl equip tow trailer electr servic brake item item ad gt tabl gt item renumb item item item ad vehicl equip anti lock devic vehicl fulfil requir contain annex categori anti lock devic categori item renumb item annex ix annex xi xii ad annex requir applic test vehicl equip anti lock devic gener purpos annex defin requir perform brake system anti lock devic fit road vehicl annex make compulsori fit vehicl anti lock devic devic fit road vehicl meet requir annex addit motor vehicl author draw trailer trailer equip compress air brake system vehicl laden meet requir compat set appendix item annex ii devic present compris sensor sensor control control modul modul devic design introduc futur deem anti lock devic mean annex appendix item annex ii provid perform equal prescrib annex definit anti lock devic compon servic brake system automat control degre slip direct rotat wheel wheel vehicl brake sensor mean compon design identifi transmit control condit rotat wheel dynam condit vehicl control mean compon design evalu data transmit sensor transmit signal modul modul mean compon design vari brake forc accord signal receiv control directli control wheel mean wheel brake forc modul data provid sensor indirectli control wheel mean wheel brake forc modul data provid sensor wheel type anti lock devic motor vehicl deem equip antilock devic mean para graph appendix item annex ii devic fit categori anti lock devic vehicl equip categori anti lock devic meet relev requir annex categori anti lock devic vehicl equip categori anti lock devic meet relev requir annex item categori anti lock devic vehicl equip categori anti lock devic meet relev requir annex item vehicl individu axl bogi includ directli control wheel fulfil condit adhes util wheel lock sequenc appendix item annex ii adhes util requir prescrib item annex rel posit adhes util curv meet requir item appendix item annex ii check made ensur wheel rear axl lock front axl axl condit prescrib item appendix item annex ii regard brake rate load requir check high low adhes road surfac maximum modul servic brake control forc tow vehicl deem equip anti lock devic mean item appendix item annex ii meet relev requir annex gener requir break suppli electr devic wire extern elctron control signal driver specif optic warn signal requir appli anti lock devic tow vehicl design coupl tow vehicl categori warn devic anti lock devic tow vehicl give signal tow vehicl anti lock devic tow vehicl coupl requir met automat warn signal light anti lock devic energis latest vehicl reach speed km ho defect present tale lamp warn devic visibl daylight easi driver check work order motor vehicl equip anti lock devic design tow trailer equip devic except vehicl categori fit separ warn devic anti lock devic tow vehicl meet requir item fit optic warn signal light applic brake warn driver attach trailer equip anti lock devic warn signal visibl daylight good work order easili check driver convei signal trailer attach function automat vehicl categori electr connect anti lock devic tow vehicl effect special connector conform iso standard event failur anti lock devic residu brake perform prescrib vehicl question event failur part transmiss servic brake item annex requir constru departur requir secondari brake suppli electr anti lock devic tow vehicl provid firstli iso connector pin failur warn power suppli special anti lock connector conform iso iso connector pin exceed present limit stop lamp circuit fulfil requir appendix item annex ii satisfi instal brake load sens devic tow vehicl tow vehicl equip optic devic field view driver rear view mirror visibl daylight warn break suppli electr wire extern electron control anti lock devic tow vehicl oper devic advers affect magnet electr field special provis motor vehicl energi consumpt brake system equip anti lock devic maintain perform servic brake fulli appli long period complianc requir verifi mean test test procedur initi energi level energi storag devic manufactur level ensur effici prescrib servic brake vehicl laden auxiliari servic storag devic isol initi speed km surfac coeffici adhes brake laden vehicl fulli appli time wheel equip anti lock devic remain control time vehicl engin stop suppli energi storag devic cut servic brake control fulli actuat time success vehicl stationari brake appli time brake vehicl perform prescrib secondari brake laden vehicl test case motor vehicl author draw trailer equip compress air brake system suppli line stop energi storag devic litr capac connect control line accord annex iv item brake appli fith time provid item energi level suppli control line half level obtain full applic start initi energi level addit requir coeffici adhes road surfac measur vehicl question method item appendix annex brake test conduct engin disconnect idl vehicl laden brake time determin formula vmax second express second vmax repres maximum design speed vehicl express km upper limit km time complet singl brake phase phase maximum test conduct phase fresh energi suppli phase test perform prescrib item deem satisfi end fourth applic vehicl stationari energi level storag devic requir secondari brake laden vehicl util adhes util adhes anti lock devic take account actual increas brake distanc theoret minimum anti lock devic deem satisfactori condit aa satisfi aa repres adhes util defin item appendix annex requir constru requir brake perform prescrib annex ii vehicl question adhes util aa measur road surfac coeffici adhes dry road initi speed km test procedur determin coeffici adhes formula calcul adhes util aa laid appendix annex util adhes anti lock devic check complet vehicl equip anti lock devic categori case vehicl equip categori anti lock devic axl directli control wheel satisfi requir condit aa check vehicl laden unladen addit check addit check carri vehicl laden unladen wheel directli control anti lock devic lock full forc suddenli appli control devic kind road surfac item low initi speed km high initi speed vmax km axl pass high adhes surfac low adhes surfac full forc appli control devic directli control wheel lock run speed instant appli brake calcul anti lock devic fulli cycl high adhes surfac passag surfac made high low speed condit laid item vehicl pass low adhes surfac high adhes surfac full forc appli control devic deceler vehicl rise high reason time vehicl deviat initi run speed instant appli brake calcul anti lock devic fulli cycl low adhes surfac passag surfac occur approxim km provis paragraph appli vehicl equip anti lock devic categori left wheel vehicl situat surfac differ coeffici adhes directli control wheel lock full forc suddenli appli control devic speed km laden vehicl equip anti lock devic categori condit item satisfi prescrib brake rate appendix annex test provid item period wheel lock allow wheel lock permit vehicl speed km likewis lock indirectli control wheel permit speed stabil steerabl affect test provid item steer correct permit angular rotat steer control initi second begin test longitudin median plane vehicl pass boundari high low adhes surfac test part outer tyre cross boundari special provis tow vehicl energi consumpt brake system equip anti lock devic design servic brake control fulli appli time vehicl retain suffici energi bring halt reason distanc complianc requir check procedur vehicl unladen straight level road surfac good coeffici adhes brake adjust close proport load sens valv fit held laden posit test initi energi level energi storag devic maximum vehicl manufactur case standard assembl refer item appendix item annex ii initi energi level equival pressur bar coupl head trailer suppli line brake fulli appli time second wheel equip antilock devic remain control test suppli energi storag devic cut axl axl equip anti lock devic receiv energi energi storag devic devic share axl axl equip anti lock devic suppli axl axl equip cut brake consumpt energi initi applic brake axl axl account end brake vehicl stationari servic brake control fulli actuat time applic pressur oper circuit suffici provid total brake forc peripheri wheel equal forc maximum mass born wheel vehicl stationari util adhes brake system equip anti lock devic deem accept condit aa satisfi aa repres adhes util defin item appendix annex condit verifi vehicl unladen straight level road surfac good coeffici adhes addit check speed exceed km wheel directli control anti lock devic lock full forc suddenli appli control devic check condit prescrib item low initi speed km high initi speed km period lock wheel allow stabil affect appendix util adhes method measur motor vehicl determin coeffici adhes coeffici adhes determin quotient maximum brake forc lock wheel dynam load axl brake brake appli axl vehicl test initi speed km brake forc equal distribut wheel axl anti lock devic disconnect number test increment line pressur carri determin maximum brake rate vehicl zm test constant input forc maintain brake rate determin refer time speed reduc km km formula zm maximum second brake forc calcul measur brake rate roll resist unbrak axl equal static axl load driven axl driven axl dynam load axl relat appendix item annex ii round place decim case axl vehicl front axl brake coeffici adhes zm zm symbol defin appendix item annex ii determin adhes util aa adhes util aa defin quotient maximum brake rate anti lock devic oper zmax coeffici adhes aa zmaxk maximum brake rate zmax measur anti lock devic oper base averag test time speed reduc km km item aa round place decim case vehicl equip anti lock devic categori zmax base vehicl anti lock devic oper adhes util aa formula quot item case vehicl equip anti lock devic categori zmax measur acl directli control wheel axl vehicl anti lock devic act rear axl adhes util aa aa zmax zmax calcul made axl directli control wheel method measur tow vehicl axl directli control wheel test conduct brake axl time axl brake engin tow vehicl disconnect brake rate determin take account roll resist unbrak axl test conduct speed km roll resist coeffici estim relat verifi axl aa aa adhes util maximum brake rate obtain brake axl lock wheel anti lock devic disconnect brake rate obtain brake axl road surfac anti lock devic oper valu arithmet mean valu measur success test condit axl directli control wheel case full trailer coeffici adhes adhes util aa determin accord provis motor vehicl item appendix forc drawbar connect account case semi trailer centr axl trailer procedur adhes util calcul mean formula aa zmaxz maximum brake rate obtain brake axl lock wheel anti lock devic disconnect wheel axl remov zmax brake rate obtain brake axl control anti lock devic devic oper calcul carri procedur item appendix determin maximum brake rate prdyntr tr brake forc pm prdyn dynam load pr tr hs hr hs er symbol defin appendix item annex ii zmax calcul procedur measur brake rate anti lock devic oper calcul trm prmdyn formula item zmax pmrdyntmr appendix perform differ adhes surfac prescrib brake rate refer item annex calcul refer measur coeffici adhes surfac test carri surfac satisfi condit prescrib item annex coeffici adhes high low adhes surfac determin accord provis item appendix annex prescrib brake rate laden motor vehicl annex xi test condit trailer electr brake system gener purpos provis electr brake servic brake system consist control devic electromechan transmiss devic friction brake electr control devic regul voltag trailer situat trailer electr energi requir electr brake system suppli trailer motor vehicl electr brake system actuat oper servic brake system motor vehicl nomin voltag rate maximum current consumpt exce electr connect electr brake system motor vehicl effect mean special plug socket connect plug compat socket light equip vehicl plug cabl situat trailer condit trailer batteri trailer fed power suppli unit motor vehicl separ suppli line servic brake trailer trailer unladen mass maximum mass brake forc automat regul function load condit trailer electr brake devic voltag connect line reduc brake effect forc maximum mass trailer maintain control devic regul brake forc react inclin direct travel pendulum spring mass system liquid inertia switch trailer axl vartic adjust tow devic attach chassi case singl axl trailer trailer close coupl axl axl spread metr control devic equip mechan indic horizont posit spirit level manual adjust mechan set horizont plane line direct travel vehicl relai actuat brake current accord item annex connect actuat line situat trailer dummi socket provid plug tale provid control devic light brake applic indic proper function trailer electr brake system perform electr brake system respond deceler tractor trailer combin brake effect commenc initi brake forc higher forc maximum mass higher forc unladen mass trailer brake forc increas step higher level brake forc refer item step higher forc maximum mass higher forc unladen mass trailer case singl axl trailer maximum mass exceed tonn step exce forc maximum mass trailer increas permit subsequ step step step step step exce purpos provis axl trailer wheelbas shorter metr consid singl axl trailer prescrib brake forc trailer forc maximum mass attain maximum mass case fulli develop deceler tractor trailer combin singl axl trailer multi axl trailer trailer close coupl axl axl spread metr consid singl axl trailer mean provis limit defin appendix annex observ brake forc regul step lie rang shown appendix annex test carri initi speed km automat brake trailer provid accord condit item annex automat brake action requir electr energi trailer brake forc forc maximum mass guarante minut satisfi abovement condit appendix gt start graphic gt lt aa gt lt aa gt lt aa gt compat brake rate trailer fulli lt ss gt develop deceler tractor trailer combin trailer laden lt ss gt unladen lt aa gt lt aa gt lt aat gt lt aan gt lt gt lt aat gt lt aan gt lt gt lt aa gt lt aenl gt singl axl multi axl trailer singl axl trailer multi axl trailer lt aa gt lt aa gt lt blk abrev gt lt blk indic type quot suf quot gt lt blk indic gt lt blk abrev gt te lt aa gt lt aa gt lt aa gt limit diagram refer laden unladen trailer lt ss gt trailer unladen mass exce maximum mass limit lt ss gt appli lt blk qt gt lt aa gt laden lt blk qt gt lt aa gt condit lt aa gt lt aa gt lt aa gt limit diagram affect provis lt ss gt annex minimum brake perform requir lt ss gt brake perform obtain test accord lt ss gt provis item greater request lt ss gt exce limit diagram lt aa gt lt aa gt lt aat gt lt aan gt lt aa gt lt aa gt sum brake forc peripheri wheel trailer lt aa gt lt aa gt lt aat gt lt aan gt lt aa gt lt aa gt total normal static reaction road surfac wheel trailer lt aa gt lt aa gt lt aa gt lt aa gt fullydevelop deceler tractor trailer combin gt end graphic gt annex xii inertia dynamomet test method brake line gener procedur annex appli event modif vehicl type result fit brake line type vehicl approv accord direct altern type brake line check compar perform obtain brake line vehicl equip time approv conform compon identifi relev inform document model annex ix technic author respons conduct approv test discret requir comparison perform brake line carri accord relev provis contain annex ii applic approv comparison made vehicl manufactur duli accredit repres context annex vehicl vehicl type approv direct request comparison consid satisfactori test equip dynamomet characterist capabl gener inertia requir item annex capac meet requir prescrib item annex ii respect type ii fade test brake fit ident origin vehicl type concern air cool provid accord item annex instrument test capabl provid data continu record disc drum rotat speed number revolut complet stop resolut greater eighth revolut stop time continu record temperatur measur centr path swept line mid thick disc drum line continu record brake applic control line pressur forc continu record brake output tórque test condit dynamomet set close toler rotari inertia equival part total inertia vehicl brake wheel formula mr rotari inertia kgm tyre roll radiu part maximum mass vehicl brake wheel case singl end dynamomet mass calcul design brake distribut deceler correspond item annex ii case categori trailer equival mass ground wheel vehicl stationari load maximum mass initi rotat speed inertia dynamomet correspond linear speed vehicl prescrib direct base roll radiu tyre brake line bed exceed temperatur bed procedur altern vehicl manufactur request bed accord recommend cool air flow brake direct perpendicular axi rotat veloc cool air flow brake greater km temperatur cool air ambient temperatur test procedur sampl set brake line subject comparison test compar set line conform origin compon identifi inform document approv vehicl type concern brake line equival base comparison result achiev test procedur prescrib annex accord requir type cold perform test brake applic made initi temperatur temperatur measur accord provis item case brake line intend vehicl categori brake applic made initi rotat speed equival item annex ii brake appli achiev torqu equival declar prescrib item addit test carri rotat speed lowest equival maximum speed vehicl highest equival speed case brake line intend vehicl categori brake applic made initi rotat speed equival km brake appli achiev torqu equival prescrib item annex ii supplementari cold perform test initi rotat speed equival km carri comparison type ii test result item annex ii brake torqu record cold perform test line test purpos comparison input measur test limit brake torqu record brake line conform compon indentifi relev applic vehicl type approv type test repeat brake brake line vehicl categori test procedur paragraph annex ii continu brake brake line trailer categori test accord item annex ii residu perform complet test requir item residu brake perform test item annex ii carri brake torqu record residu perform test line test purpos comparison input measur test limit brake torqu record brake line conform compon identifi relev applic vehicl type approv type ii test test requir vehicl type question friction brake type ii test brake line motor vehicl categori requir item annex undergo type ii test categori trailer categori test procedur set item annex ii residu perform complet test requir item residu perform test item annex ii carri brake torqu record residu perform test line test purpos comparison input measur test limit brake torqu record brake line conform compon identifi relev applic type approv inspect brake line brake line visual inspect complet test outlin check satisfactori condit continu normal servic uniform procedur agre calcul effect retard provis appendix item annex ii definit cover vehicl fit regen brake system uniform procedur agre calcul effect retard provis appendix item annex ii vehicl equip integr retard equip anti lock devic act servic brake axl control retard retard compli requir annex vehicl categori laden unladen rear axl load ratio exceed maximum mass tonn compli requir categori vehicl item octob initi energi level state approv document initi energi level state approv document brake design approv present equival inform delet applic editori correct safe travel read spare travel item appendix english version coupl overhang horizont distanc coupl centr axl trailer centrelin rear axl anti lock devic select high control deem includ directli indirectli control wheel devic select low control sens wheel deem directli control wheel ensur compat vehicl special iso connector gener consid requir item tow vehicl fulfil vehicl satisfi condit uniform test procedur agre manufactur provid technic servic test procedur result test surfac gener tyre limit wear higher valu discret technic servic actual obtain type tyre surfac record footnot item full forc mean maximum forc prescrib annex ii categori vehicl higher forc requir activ anti lock devic high adhes surfac coeffici low adhes surfac coeffici measur laid appendix annex coeffici adhes test track high prevent anti lock devic cycl test carri surfac lower coeffici adhes footnot item studi characterist special connect determin type nation author grant approv