commiss direct juli adapt technic progress council direct eec juli 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 act annex treati access member state eec eaec sign brussel januari articl thereof regard council direct eec juli approxim law member state relat brake devic categori motor vehicl trailer amend act annex treati access member state eec eaec sign brussel januari articl thereof direct eec februari commiss adopt provis adapt technic progress council direct juli mention provis sole relat brake pressur distributor condit compat order avoid combin vehicl draw drawn vehicl provid guarante safeti point view brake provis subject condit compat draw drawn vehicl technic progress enabl provis compat adopt enabl correctli implement lai provis condit compat necessit amend provis relat devic enabl brake pressur match load set annex council direct eec provis relat wheel anti lock system adopt date entri forc provis subject vehicl categori except categori provis direct fit wheel anti lock devic direct earlier date entri forc amend provis longer justifi retain provis paragraph articl commiss direct eec provis direct accord opinion committe adapt technic progress direct aim remov technic barrier trade motor vehicl sector oj oj pp oj oj pp oj adopt direct articl paragraph articl commiss direct eec februari adapt technic progress council direct juli approxim law member state relat brake devic categori motor vehicl trailer rescind effect date adopt direct articl annex ii ix council direct eec juli approxim law member state relat brake devic categori motor vehicl trailer amend commiss direct eec februari amend shown annex direct pend entri forc special requir wheel anti lock system vehicl categori fit system submit prescript direct articl effect januari member state ground relat brake devic refus respect type vehicl grant eec type approv issu document refer indent articl council direct eec februari grant nation type approv prohibit entri servic vehicl brake devic type vehicl vehicl compli provis council direct eec juli amend direct effect octob member state longer issu document refer indent articl council direct eec februari respect type vehicl brake devic compli provis council direct eec juli amend direct refus grant nation type approv respect type vehicl brake devic compli provis council direct eec juli amend direct effect octob member state prohibit entri servic vehicl brake devic compli provis council direct eec juli amend direct member state adopt publish provis order compli direct januari forthwith inform commiss thereof articl direct address member state brussel juli commiss presid françoi xavier ortoli annex amend annex council direct eec juli annex definit requir construct fit item read failur part hydraul transmiss system signal driver devic compris red tale lamp light actuat control devic compris red tale lamp light level fluid reservoir fall manufactur admiss tale lamp visibl daylight satisfactori condit lamp easili verifi driver failur compon devic entail total loss effect brake devic question annex ii brake test perform brake devic item read prejudic requir contain item road possess surfac good adhes item add item behaviour vehicl categori road surfac reduc adhes fulfil condit laid appendix appendix distribut brake effort vehicl axl gener requir vehicl categori fulfil condit present appendix special devic oper automat symbol axl index front axl axl pi normal reaction road surfac axl static condit ni normal reaction road surfac axl brake ti forc exert brake axl normal brake condit road fi ti ni adhes axl deceler vehicl acceler due graviti adhes curv axl mean curv show adhes axl plot vehicl brake rate load condit brake rate vehicl weight vehicl height centr graviti wheelbas theoret coeffici adhes tyre road kc correct factor semi trailer laden kv correct factor semi trailer unladen tm sum brake forc peripheri wheel draw vehicl trailer semi trailer pm total normal static reaction road surfac wheel draw vehicl trailer semi trailer refer item pm pressur coupl head servic line tr sum brake forc peripheri wheel trailer semi trailer pr total normal static reaction road surfac wheel trailer semi trailer prmax pr maximum weight semi trailer er distanc king pin centr axl axl semi trailer hr height ground centr graviti semi trailer requir motor vehicl axl vehicl categori vehicl valu gt pic file quot quot gt 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 adhes util curv axl situat parallel line ideal adhes util equat shown diagram adhes util curv rear axl brake gt pic file quot quot gt pressur servic line coupl head motor vehicl author draw trailer fit air brake affect oper pressur regul devic axl draw vehicl semi trailer brake forc divid static weight semi trailer axl provis item affect requir annex ii relat brake effici verifi provis item brake effici obtain higher prescrib annex ii provis relat adhes util curv appli area diagram ia ib defin straight line order verifi requir item manufactur provid adhes util curv front rear axl calcul formula gt pic file quot quot gt vehicl tractiv unit semi trailer graph plot load condit unladen run order driver board laden provis made possibl load distribut front axl heavili laden consider height centr graviti manufactur case vehicl fit air brake trailer motor vehicl author draw trailer permiss relationship brake rate tr pr tm pm pressur pm area shown diagram tractiv unit semi trailer 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 weight appli coupl king pin equal maximum weight coupl solo tractiv unit height centr graviti manufactur brake forc continu regul state tractiv unit semi trailer unladen solo tractiv unit brake forc relat solo tractiv unit verifi tractiv unit laden semi trailer laden articul combin consid tractiv unit run order driver board coupl laden semi trailer dynam load semi trailer tractiv unit repres static weight ps appli coupl king pin equal ps pso pso repres differ maximum laden weight tractiv unit unladen weight gt pic file quot quot gt ho height centr graviti tractiv unit hs height coupl semi trailer rest po unladen weight solo tractiv unit po ps case vehicl fit compress air brake system permiss relationship brake rate tm pm pressur pm area shown diagram vehicl axl requir item appli vehicl axl requir item respect wheel lock sequenc consid met case brake rate adhes front axl greater rear axl requir semi trailer semi trailer fit compress air brake system permiss relationship brake rate tr pr pressur pm lie area deriv diagram laden unladen state load requir met permiss load condit semi trailer axl requir trailer requir appli trailer fit air brake appli singl axl trailer twin axl trailer axl spread metr requir set item appli twin axl trailer exclud requir contain trailer axl subject requir contain item condit fulfil case failur brake distribut system requir appendix met mean special devic control mechan suspens vehicl event failur devic control secondari stop vehicl condit prescrib brake case motor vehicl case trailer semi trailer event failur control servic brake rate prescrib vehicl question attain mark vehicl categori meet requir appendix mean devic mechan control suspens vehicl mark show travel devic posit vehicl unladen laden state requir appendix met mean devic actuat compress air vehicl mark show pressur valu outlet side devic full brake vehicl unladen laden condit mark refer item affix visibl posit indel form vehicl inspect eec type approv test vehicl technic inspect author verifi conform requir contain present appendix carri test consid end report addit test append eec type approv certif diagram vehicl categori item gt pic file quot quot gt diagram vehicl vehicl categori item gt pic file quot quot gt diagram draw vehicl trailer item gt pic file quot quot gt diagram gt pic file quot quot gt diagram semi trailer item gt pic file quot quot gt diagram item gt pic file quot quot gt explanatori note diagram formula diagram deriv gt pic file quot quot gt descript method mean work dash line shown diagram refer determin factor kc kv vehicl gt pic file quot quot gt item figur parenthesi relat vehicl purpos illustr method diagram calcul ratio gt pic file quot quot gt determin laden factor kc start hr hr move horizont pr line pr move vertic er line er move horizont kc scale kc laden factor requir kc determin unladen factor kv determin factor start hr hr move horizont pr prmax line group curv nearest vertic axi pr prmax move vertic horizont axi read determin factor start hr hr move horizont pr line pr move vertic er line er move horizont pr prmax line group curv furthest vertic axi pr prmax move vertic horizont axi read determin factor kv unladen factor kv obtain express kv kv annex ix model commun eec type approv vehicl regard brake item item ad distribut brake axl vehicl vehicl fulfil requir contain appendix item