council direct juli approxim law member state relat brake devic categori motor vehicl trailer eec council european commun regard treati establish european econom commun articl thereof regard propos commiss regard opinion european parliament regard opinion econom social committe technic requir motor vehicl satisfi pursuant nation law relat inter alia brake devic categori motor vehicl trailer requir differ member state member state adopt requir addit exist rule order eec type approv procedur subject council direct februari approxim law member state relat type approv motor vehicl trailer appli respect type vehicl harmonis requir ensur road safeti commun adopt direct articl purpos direct quot vehicl quot mean motor vehicl fall intern categori list intend road vehicl bodywork wheel maximum design speed exceed km trailer except vehicl run rail agricultur tractor machineri public work vehicl categori motor vehicl wheel wheel maximum weight exce metric ton carriag passeng categori vehicl carriag passeng compris seat addit driver seat categori vehicl carriag passeng compris seat addit driver seat maximum weight exceed metric ton categori vehicl carriag passeng compris seat addit driver seat maximum weight exceed metric ton categori motor vehicl wheel wheel maximum weight exce metric ton carriag good categori vehicl carriag good maximum weight exceed metric ton categori vehicl carriag good maximum weight exceed exceed metric ton oj oj oj categori vehicl carriag good maximum weight exceed metric ton categori trailer includ semi trailer categori trailer maximum weight exceed metric ton categori trailer maximum weight exceed exceed metric ton categori trailer maximum weight exceed exceed metric ton categori trailer maximum weight exceed metric ton articul categori vehicl made separ articul unit consid singl vehicl case categori draw vehicl design coupl semi trailer maximum weight consider classifi vehicl weight draw vehicl run order maximum weight transfer draw vehicl semi trailer maximum weight draw vehicl load case categori vehicl equip fit special vehicl intend carriag passeng crane vehicl workshop vehicl public vehicl consid good maximum weight consider classifi categori semi trailer weight transmit ground axl axl semi trailer coupl draw vehicl laden maximum load articl member state refus grant eec type approv nation type approv vehicl ground relat brake devic vehicl fit devic annex viii devic satisfi requir set articl member state grant type approv measur ensur inform modif compon characterist mention item annex compet author state decid modifi prototyp submit fresh test fresh report drawn thereon test reveal failur compli requir direct modif authoris articl pend entri forc separ direct definit quot urban bu quot vehicl continu submit type ii test annex ii maximum weight exce metric ton articl amend adjust requir annex account technic progress adopt accord procedur laid articl council direct februari type approv motor vehicl trailer articl member state put forc provis requir need order compli direct eighteen month notif forthwith inform commiss thereof effect octob provis item annex appli vehicl categori categori member state ensur text main provis nation law adopt field cover direct commun commiss articl direct address member state brussel juli council presid moro annex definit requir construct fit definit quot type vehicl respect brake devic quot quot type vehicl respect brake devic quot mean vehicl differ essenti respect case motor vehicl vehicl categori defin articl direct maximum weight defin item distribut weight axl maximum design speed type brake devic refer presenc devic brake trailer number arrang axl engin type number ratio gear ratio rear drive axl tyre dimens case trailer vehicl categori defin articl direct maximum weight defin item distribut weight axl type brake devic number arrang axl tyre dimens quot brake devic quot quot brake devic quot mean combin part function progress reduc speed move vehicl bring halt stationari halt function item devic consist brake control transmiss brake proper quot graduat brake quot quot graduat brake quot mean brake normal rang oper devic applic releas brake driver time increas reduc brake forc action control brake forc act direct action control monoton function easili make suffici fine adjust brake forc quot control quot quot control quot mean part actuat directli driver case trailer driver mate suppli transmiss energi requir brake control energi muscular energi driver energi sourc control driver case kinet energi trailer combin kind energi quot transmiss quot quot transmiss quot mean combin compon situat control brake connect operation transmiss mechan hydraul pneumat electr mix brake power deriv assist sourc energi independ driver control reserv energi devic likewis regard part transmiss quot brake quot quot brake quot mean part forc oppos movement vehicl develop friction brake forc gener friction part vehicl move electr brake forc gener electromagnet action part vehicl move contact fluid brake forc gener action fluid situat part vehicl move engin brake forc deriv control increas brake action engin transmit wheel quot type brake devic quot quot type brake devic quot mean equip differ essenti respect compon characterist compon made materi characterist compon shape size assembl compon quot brake system compon quot quot brake system compon quot mean individu part assembl constitut brake devic quot continu brake quot quot continu brake quot mean brake combin vehicl instal characterist singl control driver actuat progress singl movement drive seat energi brake vehicl constitut combin vehicl suppli sourc muscular energi driver brake instal ensur simultan suitabl phase brake constitu vehicl combin rel posit quot semi continu brake quot quot semi continu brake quot mean brake combin vehicl instal characterist singl control driver actuat progress singl movement drive seat energi brake vehicl constitut combin vehicl suppli sourc muscular energi driver brake instal ensur simultan suitabl phase brake constitu vehicl combin rel posit quot automat brake quot quot automat brake quot mean brake trailer trailer occur automat event separ compon combin coupl vehicl includ separ coupl breakag effect remaind combin affect quot inertia quot overrun quot brake quot quot inertia brake quot mean brake utilis forc gener trailer move draw vehicl quot laden vehicl quot quot laden vehicl quot mean state vehicl laden quot maximum weight quot quot maximum weight quot quot maximum weight quot mean maximum weight state vehicl manufactur technic permiss weight higher quot permiss maximum weight quot construct fit requir gener brake devic brake devic design construct fit enabl vehicl normal vibrat subject compli underment requir brake devic design construct fit resist corros ag phenomena expos function brake devic brake devic defin item fulfil condit servic brake servic brake enabl driver control movement vehicl halt safe speedili effect speed load gradient graduat brake action driver achiev brake action drive seat remov hand steer control secondari brake secondari brake make halt vehicl reason distanc event failur servic brake graduat brake action driver obtain brake action drive seat keep hand steer control purpos requir assum failur servic brake occur time park brake park brake enabl vehicl held stationari gradient absenc driver work part held lock posit pure mechan devic driver achiev brake action drive seat subject case trailer requir item characterist brake devic vehicl categori set brake devic vehicl equip satisfi requir laid servic secondari park brake devic provid servic secondari park brake common compon provid fulfil condit control independ readili access driver drive seat requir met driver wear safeti belt control servic brake devic independ control park brake devic servic secondari brake devic control effect linkag control compon transmiss system liabl diminish period servic secondari brake devic control park brake devic design actuat vehicl motion event breakag compon brake defin item compon item failur servic brake devic malfunct partial total exhaust energi reserv secondari brake devic part servic brake devic affect failur bring vehicl halt condit prescrib secondari brake secondari brake devic servic brake devic common control common transmiss servic brake actuat muscular energi driver assist energi reserv secondari brake event failur assist capabl ensur muscular energi driver assist energi reserv unaffect failur forc appli control exceed prescrib maxima forc servic brake transmiss depend exclus energi reserv control driver complet independ energi reserv provid independ transmiss act brake wheel select capabl ensur prescrib degre secondari brake endang stabil vehicl brake addit energi reserv fit warn devic defin item purpos item part pedal bear master cylind piston piston hydraul system control valv 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 separ control servic secondari brake devic simultan actuat control render servic secondari brake devic inop brake devic good work order faulti event failur part transmiss servic brake condit met suffici number wheel brake actuat servic brake devic control vehicl load wheel select residu perform servic brake devic equal perform prescrib categori vehicl belong forc appli control exceed kg gt pic file quot quot gt requir appli draw vehicl semi trailer transmiss servic brake devic semi trailer independ draw vehicl made energi muscular energi driver sourc energi hydraul pump air compressor mean devic constitut sourc driven complet reliabl event failur part transmiss vehicl brake devic suppli part affect failur continu ensur requir purpos halt vehicl degre effect prescrib secondari brake condit met mean devic easili actuat vehicl stationari automat mean requir item met automat devic kind ineffect pass unnot part quot rest quot posit actuat event failur brake devic servic brake devic act wheel vehicl action servic brake devic appropri distribut axl action servic brake devic distribut wheel axl symmetr relat longitudin median plane vehicl servic brake devic park brake devic act brake surfac perman connect wheel compon adequ strength disconnect brake surfac wheel case servic devic secondari brake devic disconnect brake surfac permit provid momentari instanc chang gear servic brake secondari brake continu oper prescrib degre effect addit disconnect permit case park brake devic provid control exclus driver drive seat system actuat leak wear brake easili compens mean system manual automat adjust addit control compon transmiss brake possess reserv travel brake heat brake line reach degre wear effect brake ensur adjust hydraul brake devic fill port fluid reservoir readili access addit contain reserv fluid made level reserv fluid easili check contain open condit fulfil warn light driver reserv fluid fall level liabl failur brake devic driver check easili light function properli failur part hydraul transmiss driver devic embodi red warn signal light control actuat light visibl daylight driver check easili light order failur compon devic total loss effect brake devic vehicl fit brake actuat energi reservoir prescrib brake perform imposs store energi fit warn devic addit pressur gaug fit give optic acoust signal energi part instal preced control valv fall normal devic directli perman connect circuit prejudic requir item auxiliari energi sourc essenti oper brake devic energi reserv ensur engin stop 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 intend servic brake express quot actuat quot cover action releas item interpret perform servic secondari brake devic remain limit prescrib direct momentari disconnect case motor vehicl coupl trailer equip brake control driver draw vehicl authoris servic brake devic draw vehicl fit devic design trailer brake devic fail air suppli pipe type connect adopt draw vehicl trailer break brake draw vehicl effect prescrib secondari brake prescrib devic fit draw vehicl auxiliari equip draw energi oper event damag energi sourc reserv energi feed brake devic fall level item case brake devic oper compress air pneumat link trailer type pipe trailer belong categori servic brake devic continu semi continu type case vehicl authoris draw categori trailer brake devic satisfi condit secondari brake devic draw vehicl actuat graduat brake action trailer main brake devic draw vehicl fail devic made independ section section section affect failur partial fulli actuat trailer brake graduat brake action case break leak air suppli pipe type connect adopt driver fulli partial actuat trailer brake mean servic brake control secondari brake control separ control break leak automat trailer brake case quot urban buse quot vehicl carriag passeng compris seat addit driver seat maximum weight exceed metric ton satisfi type ii test item annex ii type ii test item annex vehicl categori trailer categori fit servic brake devic trailer categori equip servic brake devic compli requir categori trailer categori fit servic brake devic continu semi continu type inertia overrun type type authoris trailer semi trailer trailer categori fit servic brake devic continu semi continu type servic brake devic act wheel trailer action servic brake devic suitabl distribut axl action brake devic distribut wheel axl symmetr relat longitudin median plane vehicl brake surfac requir attain prescrib degre effect constant contact wheel rigidli compon liabl failur point interpret essenti case servic brake devic fit devic instanc limit valv ensur vehicl brake servic brake perform equal secondari brake wear brake easili compens system manual automat adjust addit control compon transmiss brake possess reserv travel brake heat brake line reach degre wear brake ensur adjust brake devic trailer stop automat coupl break trailer motion requir appli singl axl trailer maximum weight exceed metric ton provid trailer fit addit main coupl secondari coupl chain cabl event breakag main coupl stop drawbar touch ground provid residu steer action trailer trailer requir fit servic brake devic park brake ensur trailer separ draw vehicl person stand ground actuat park brake devic case trailer carriag passeng actuat brake insid trailer express quot actuat quot cover action releas trailer fit devic enabl compress air actuat brake devic cut mention devic design construct posit restor quot rest quot posit resumpt suppli compress air trailer annex ii brake test perform brake devic brake test gener perform prescrib brake devic base stop distanc perform brake devic determin measur stop distanc relat initi speed measur reaction time devic deceler normal oper prescrib annex iii stop distanc distanc cover vehicl moment driver begin actuat control devic moment vehicl stop initi speed speed moment driver begin actuat control devic formula measur brake perform initi speed km stop distanc metr type approv vehicl brake perform measur road test conduct condit vehicl condit weight prescrib type test test report test carri speed prescrib type test vehicl construct maximum speed lower prescrib test test perform maximum speed vehicl test forc appli brake control order obtain prescrib perform exce maximum laid test vehicl categori road surfac afford good adhes test perform wind liabl affect result start test tyre cold pressur prescrib load born wheel vehicl stationari prescrib perform obtain lock wheel deviat vehicl abnorm vibrat behaviour vehicl brake brake test high speed gener behaviour vehicl brake check type test ordinari perform test brake cold gener brake cold brake deem cold temperatur measur disc drum test conduct condit vehicl laden distribut weight axl state maker provis made arrang load axl distribut maximum weight axl load axl proport maximum permiss load axl case motor vehicl test repeat unladen vehicl carri driver possibl person prefer sit front seat respons note result test limit prescrib minimum perform test vehicl unladen test vehicl laden laid hereund categori vehicl road level type test engin disconnect test carri speed prescrib categori vehicl belong figur prescrib connect subject margin toler minimum perform prescrib categori attain type test engin connect test prescrib item addit test carri speed engin connect lowest equal maximum speed vehicl highest equal speed perform figur measur behaviour vehicl record test report type test fade test repeat brake servic brake vehicl categori test success appli releas brake number time vehicl laden accord condit shown tabl gt pic file quot quot gt gt pic file quot quot gt test forc appli control adjust attain deceler sec applic brake forc remain constant succeed brake applic brake applic highest gear ratio exclud overdr continu engag regain speed brake gearbox attain speed shortest time maximum acceler allow engin gearbox continu brake servic brake trailer categori test manner vehicl laden energi input brake equival record period time laden vehicl driven steadi speed km gradient distanc km test carri level road trailer drawn motor vehicl test forc appli control adjust resist trailer constant weight trailer power haul insuffici test conduct lower speed greater distanc shown tabl gt pic file quot quot gt residu perform end type test test item test item annex residu perform servic brake devic measur condit type test engin disconnect temperatur condit residu perform prescrib categori question figur record type test engin disconnect type ii test downhil behaviour test laden vehicl test manner energi input equival record period time laden vehicl driven averag speed km gradient distanc km gear engag vehicl motor vehicl retard vehicl fit gear engag rpm engin exce maximum prescrib manufactur vehicl energi absorb brake action engin toler km averag speed permit gear enabl speed stabilis closest km gradient engag perform brake action engin determin measur deceler suffici deceler measur sec end test residu perform servic brake devic measur condit type test engin disconnect temperatur condit residu perform prescrib type test engin disconnect type iia test test vehicl quot urban buse quot carriag passeng compris seat addit driver seat maximum weight exceed metric ton laden vehicl test manner energi input equival record period time laden vehicl driven averag speed km gradient distanc km test servic secondari park brake devic engag gear engag rpm engin exce maximum prescrib manufactur vehicl energi absorb brake action engin toler km averag speed permit gear enabl speed stabilis closest km gradient engag perform brake action engin determin measur deceler suffici deceler measur sec perform brake devic vehicl categori servic brake devic provis relat test servic brake vehicl categori test condit shown tabl gt pic file quot quot gt secondari brake devic secondari brake devic actuat brake function give stop distanc exceed term term binomi express give servic brake stop distanc categori question secondari brake control manual control prescrib perform obtain appli control forc exceed kgf case categori vehicl kgf case vehicl control easili quickli grasp driver secondari brake control foot control prescrib perform obtain appli control forc exceed kgf case categori vehicl kgf case vehicl control easili quickli actuat driver perform secondari brake devic check type test park brake devic park brake devic combin brake devic capabl hold laden vehicl stationari gradient vehicl coupl trailer authoris park brake devic draw vehicl capabl hold combin vehicl stationari gradient control manual control forc appli exce kgf case categori vehicl kgf case vehicl foot control forc exert control exce kgf case categori vehicl kgf case vehicl park brake devic actuat time attain prescrib perform admiss vehicl categori servic brake devic requir relat test categori vehicl provis servic brake devic mandatori perform devic meet requir laid categori requir relat test categori vehicl servic brake devic trailer continu semi continu type sum forc exert peripheri brake wheel equal maximum weight born wheel vehicl stationari trailer fit compress air brake check made pressur exceed bar brake cylind brake devic inertia type compli condit laid annex viii addit vehicl subject type test type test semi trailer weight brake axl load axl axl semi trailer carri maximum load requir relat test categori vehicl requir appli appli categori addit vehicl undergo type test requir relat test categori vehicl requir appli appli categori addit vehicl subject type type ii test type type ii test semi trailer weight brake axl load axl axl semi trailer carri maximum load park brake devic park brake trailer semi trailer fit capabl hold laden trailer semi trailer stationari separ draw vehicl gradient forc appli control exce kgf reaction time vehicl fit servic brake devic total partial depend sourc energi muscular effort driver requir satisfi pressur annex rel pressur measur bar emerg manoeuvr time elaps moment control begin actuat moment brake forc favour axl reach level prescrib perform exce second requir annex iii appli compress air devic doubl pipe annex iii method measur reaction time vehicl fit compress air brake devic doubl pipe gener requir reaction time brake devic determin vehicl stationari pressur measur open effici brake cylind test stroke brake cylind individu axl close adjust brake test appli standard road train maximum pressur feed pipe vari bar maximum pressur control pipe bar pressur differ item compon design pressur maxima level coupl head case note test report plate indic oper pressur maxima minima fix vehicl motor vehicl start test pressur reservoir equal minimum pressur governor start feed instal instal fit governor pressur limit compressor pressur reservoir start test equal pressur state manufactur defin item annex iv test prescrib annex reaction time term actuat time tf obtain seri actuat fullest extent start shortest time second valu measur diagram reaction time actuat time second determin test reaction time obtain diagram interpol case actuat time second time elaps begin actuat control pedal moment pressur brake cylind reach asymptot exce second note round nearest tenth case motor vehicl brake coupl trailer advis except requir item measur reaction time brake cylind extrem pipe length metr intern diamet mm join brake coupl coupl head motor vehicl time elaps start activ control pedal moment pressur measur coupl head control pipe reach asymptot exce valu list tabl gt pic file quot quot gt trailer includ semi trailer reaction time trailer measur draw vehicl simul draw vehicl provid simul coupl head control pipe feed pipe trailer connect pressur feed pipe bar pressur reservoir reservoir trailer pressur bar feed pipe simul featur thirti litr reservoir fill pressur bar adjust tube length metr intern diamet mm join time pressur increas bar bar second valu pressur increas approxim linear sketch appendix annex correct simul time elaps moment pressur produc control pipe simul reach asymptot pressur moment pressur brake cylind trailer reach asymptot exce second gt pic file quot quot gt annex iv energi reservoir sourc energi compress air brake capac reservoir gener requir vehicl oper brake devic depend compress air fit reservoir capac meet requir item capac reservoir laid brake system absenc energi reserv achiev brake perform equal prescrib secondari brake verifi complianc requir item brake adjust close motor vehicl reservoir brake motor vehicl full stroke actuat servic brake control achiev perform prescrib secondari brake test requir satisfi initi pressur reservoir manufactur pressur enabl prescrib perform servic brake achiev reservoir reservoir replenish addit reservoir reservoir auxiliari equip isol case motor vehicl coupl trailer semi trailer authoris feed line block reservoir litr capac connect control line pressur reservoir exhaust actuat brake test refer item pressur control line half pressur obtain brake applic trailer includ semi trailer reservoir fit trailer full stroke actuat draw vehicl servic brake devic pressur suppli oper part half pressur obtain brake applic test requir satisfi pressur reservoir begin test equal maximum manufactur feed line block addit auxiliari equip reservoir isol signific replenish reservoir test applic brake pressur control pipe correspond maximum manufactur capac energi sourc gener provis compressor satisfi requir laid item definit pressur pressur defin item manufactur refer item time requir rel pressur rise time requir rel pressur rise condit measur case rpm speed compressor obtain engin run speed maximum power speed allow control valv auxiliari equip reservoir isol test determin period motor vehicl construct draw trailer trailer repres reservoir maximum rel pressur express bar suppli feed circuit draw vehicl volum express litr formula permiss maximum load express metric ton axl trailer semi trailer interpret result time effici reservoir exce minut case vehicl coupl trailer semi trailer authoris minut case vehicl coupl trailer semi trailer authoris time effici reservoir exce minut case vehicl coupl trailer semi trailer authoris minut case vehicl coupl trailer semi trailer authoris addit test vehicl equip auxiliari equip reservoir reservoir total capac exceed total capac brake reservoir addit test carri interfer function valv control fill auxiliari equip reservoir check made test period requir bring rise pressur brake reservoir minut case vehicl coupl trailer semi trailer authoris eleven minut case vehicl coupl trailer semi trailer authoris annex spring brake definit quot spring brake quot brake devic energi requir brake suppli spring act energi accumul gener requir spring brake servic brake small variat pressur limit occur brake compress chamber feed circuit signific variat brake forc feed circuit spring compress chamber includ energi reserv suppli devic equip provis appli spring maintain compress state independ system devic design appli releas brake time start initi pressur spring compress chamber equal maximum design pressur requir met brake adjust close pressur compress chamber spring begin actuat brake adjust close greater minimum level pm normal pressur pressur compress chamber fall level brake part begin move optic audibl warn devic actuat provid requir met warn devic item annex motor vehicl fit spring brake authoris draw trailer continu semi continu brake automat applic spring brake trailer brake appli releas system spring brake design event failur releas normal control achiev auxiliari devic pneumat mechan oper auxiliari devic refer item requir tool spanner tool spanner vehicl annex vi park brake mechan lock brake cylind lock actuat definit quot mechan lock brake cylind quot mean devic ensur park brake mechan wedg brake piston rod mechan lock occur lock chamber empti compress air mechan lock devic design releas lock chamber subject pressur special provis pressur lock chamber approach level mechan lock optic audibl warn system actuat case brake actuat fit mechan lock devic brake actuat capabl actuat energi reserv lock brake cylind releas brake oper releas event failur sourc energi suppli lock chamber auxiliari unlock devic mechan pneumat instanc air tyre vehicl provid annex vii case type ii ii test carri vehicl submit type approv type ii ii test carri vehicl submit type approv case vehicl question motor vehicl trailer semi trailer respect tyre brake energi absorb axl method fit tyre brake ident brake concern motor vehicl trailer semi trailer pass type ii ii test type approv regard brake energi absorb axl weight greater equal vehicl submit type approv vehicl question motor vehicl trailer semi trailer axl axl respect tyre brake energi absorb axl method fit tyre brake ident brake concern axl axl individu pass type ii test axl weight greater equal vehicl submit type approv provid brake energi absorb axl exce energi absorb axl refer test test carri separ axl vehicl submit type approv fit retard engin brake ident retard test condit test carri gradient type ii test type ii test retard stabilis speed vehicl maximum weight time test equal maximum weight vehicl submit type approv test check made speed rotat revolv part retard vehicl submit type approv travel speed km retard torqu equal retard torqu test mention item term quot ident quot item mean ident geometr mechan characterist vehicl part mention item characterist materi part made advantag provis type approv commun respect brake annex ix particular item applic type approv number vehicl type ii ii test serv refer test carri item annex ix item applic tabl item model item commun annex iv complet item applic tabl item model commun annex ix complet person appli type approv member state refer type approv grant member state person produc document relat approv annex viii condit govern test vehicl equip inertia overrun brake gener provis inertia overrun brake devic trailer compris control devic transmiss brake proper hereinaft call quot brake quot control devic combin compon compris coupl head transmiss combin compon compris coupl head part brake quot brake quot part forc oppos movement vehicl develop part brake lever actuat brake cam similar part mechan transmiss inertia brake brake cylind hydraul transmiss inertia brake brake devic accumul energi instanc electr pneumat hydraul transmit trailer draw vehicl control forc coupl deem inertia brake devic mean direct axl wheelbas metr tandem axl purpos annex deem axl test determin main characterist brake determin main characterist control devic test devic conform provis direct test vehicl compat control devic brake transmiss symbol definit unit gt pic file quot quot gt symbol valid type brake diagram appendix ga quot total weight quot trailer declar technic permiss manufactur quot total weight quot trailer manufactur declar brake control devic gb quot total weight quot trailer brake joint oper trailer brake gb gbo gbo fraction permiss quot total weight quot manufactur declar brake brake brake forc requir requir brake forc take account roll resist permit thrust coupl load coupl control devic output forc supplementari forc control devic convent defin forc point intersect ax extrapol curv express term measur control system mid travel posit graph appendix ka threshold forc control devic maximum forc coupl head appli short period time produc output forc control devic convent ka defin forc measur forc begin exert coupl head speed mm control devic transmiss uncoupl maximum forc appli coupl head forc rearward speed mm transmiss uncoupl maximum forc appli coupl head pull forward speed mm rearmost posit transmiss uncoupl gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt travel control express millimetr effect travel control express millimetr fix accord requir item safe travel master cylind actuat measur millimetr coupl head loss travel travel measur millimetr coupl head actuat travel point mm horizont plane point mm transmiss remain stationari sb brake shoe lift measur diamet parallel oper mechan brake adjust test express millimetr sb minimum brake shoe lift express millimetr gt pic file quot quot gt diamet brake drum express millimetr diagram appendix brake moment radiu pneumat tyre metr measur load wheel centr ground level vehicl test round nearest centimetr number brake symbol mechan transmiss brake diagram appendix iho reduct ratio travel coupl head travel lever output side control devic ih reduct ratio travel lever output side control devic travel brake lever gear transmiss ih reduct ratio travel coupl head travel brake lever ih iho ih ig reduct ratio travel brake lever brake shoe centr lift diagram appendix page forc appli brake control lever po brake retract forc graph forc point intersect extrapol function abscissa graph appendix gt pic file quot quot gt symbol hydraul transmiss brake diagram appendix ih reduct ratio travel coupl head travel piston master cylind ig reduct ratio travel actuat point cylind brake shoe centr lift frz surfac area piston brake cylind fhz surfac area piston master cylind hydraul pressur brake cylind po retract pressur brake cylind graph pressur point intersect extens function abscissa graph appendix gt pic file quot quot gt gener requir transmiss brake power coupl head trailer brake effect rod linkag mean fluid sheath cabl bowden cabl provid part transmiss part short pin joint adequ protect addit joint lubric easili access lubric inertia brake devic hydraul transmiss arrang coupl head forc rearward fullest extent avoid damag creat excess forc transmiss brake devic devic enabl stress reduc reduc brake forc extent prescrib brake forc achiev item appli mutati mutandi inertia brake devic mechan transmiss fit stress reduc inertia brake devic mechan transmiss stress reduc arrang case coupl head travel fullest extent part transmiss jam suffer perman distort fail check uncoupl element transmiss brake control lever requir control devic slide member control devic long enabl brake fulli appli trailer coupl slide member protect bellow equival devic lubric construct lubric materi surfac friction contact made materi electrochem torqu mechan incompat liabl slide member seiz stress reduc equip mention item commenc function pressur coupl reach case singl axl trailer case multi axl trailer prevent brake forc wheel exceed pressur coupl gb case singl axl trailer gb case multi axl trailer threshold forc control equip ka maximum depress forc exce case singl axl trailer case multi axl trailer maximum tow forc test measur carri control system complianc requir item verifi control devic submit technic servic conduct test measur respect type brake travel travel supplementari forc threshold forc ka damp forc tow forc case mechan transmiss inertia brake determin reduct ratio iho measur mid travel portion control forc output side control devic function thrust drawbar supplementari forc effici deriv repres curv obtain measur gt pic file quot quot gt case hydraul transmiss inertia brake determin reduct ratio ih measur mid travel posit control pressur output side master cylind function thrust drawbar surfac area fhz master cylind piston manufactur supplementari forc effici deriv repres curv obtain measur gt pic file quot quot gt graph appendix page safe travel master cylind actuat quot mention item case inertia brake fit devic mention item stress reduc check limit mention item observ case inertia brake multi axl trailer loss travel mention item measur requir brake manufactur make technic servic respons test addit brake test draw brake show type dimens materi main part make type line draw surfac area frz brake cylind case hydraul brake manufactur maximum brake torqu mmax allow weight gbo mention item brake torqu mmax manufactur forc pressur requir give brake forc gbo devic mention item commenc function forc pressur reach brake forc gbo prevent forc pressur mention item exceed test measur carri brake brake item equip made technic servic respons test test check conform requir item determin minimum shoe centr lift sb shoe centr lift sb greater sb brake moment function forc appli control lever case devic mechan transmiss pressur brake cylind case devic hydraul transmiss speed brake surfac rotat correspond initi vehicl speed km deduct curv obtain measur gt pic file quot quot gt gt pic file quot quot gt test report applic made type approv trailer fit inertia brake applic accompani test report relat control system brake test report compat inertia control devic transmiss brake trailer report includ particular shown appendic annex compat control devic inertia brake vehicl check made vehicl take account characterist control devic appendix brake appendix trailer characterist mention item appendix inertia brake devic trailer compli requir laid gener test type brake gt pic file quot quot gt weight total weight trailer ga exce total weight control devic authoris total weight trailer ga exce total weight gb brake joint oper trailer brake forc threshold forc ka ga greater ga maximum damp forc exce ga case singl axl trailer ga case multi axl trailer maximum pull forc ga ga devic mention item stress reduc check made control devic brake fit devic devic form part control devic minimum gb fix item control devic total permiss weight gb brake trailer test test brake effici 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 case inertia brake mechan transmiss gt pic file quot quot gt case inertia brake hydraul transmiss gt pic file quot quot gt control travel test case control devic multi axl trailer brake rod system depend posit tow vehicl travel control greater travel control differ length equival loss travel travel exce mm travel control determin brake rod system affect rel posit tow devic loss travel case hydraul brake system quot inequ appli order check travel control adequ case inertia brake mechan transmiss gt pic file quot quot gt case inertia brake hydraul transmiss gt pic file quot quot gt addit test case inertia brake mechan transmiss check made rod system forc transmit control devic correctli fit case inertia brake hydraul transmiss check made travel master cylind actuat reach minimum level ih lower level permit road test carri determin gener reaction vehicl brake gener comment provis appli latest model inertia brake mechan hydraul transmiss case model wheel trailer fit type brake type tyre test special model requir adapt appendix gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt appendix test report inertia brake control devic gt pic file quot quot gt appendix brake test report gt pic file quot quot gt appendix test report compat inertia control devic transmiss brake trailer gt pic file quot quot gt gt pic file quot quot gt annex ix gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt