council direct eec june audibl warn devic wheel motor vehicl council european commun regard treati establish european econom commun articl thereof regard council direct eec june relat type approv wheel motor vehicl regard propos commiss cooper european parliament regard opinion econom social committe intern market compris area intern frontier free movement good person servic capit ensur measur requir purpos adopt regard audibl warn devic member state wheel motor vehicl displai technic characterist laid mandatori provis differ member state result differ provis constitut barrier trade commun obstacl oper intern market remov requir adopt member state place nation rule draw harmon requir audibl warn devic wheel motor vehicl order enabl type approv compon type approv procedur laid direct eec appli type vehicl scale impact action propos sector question commun measur cover direct essenti achiev aim view establish commun vehicl type approv aim adequ achiev member state individu order facilit access market commun countri establish equival requir direct regul unit nation econom commiss europ adopt direct articl direct appli audibl warn devic type vehicl defin articl direct eec articl procedur grant compon type approv respect audibl warn devic type wheel motor vehicl compon type approv audibl warn devic form compon condit govern free movement vehicl unimped place market audibl warn devic laid chapter ii iii direct eec articl accord provis articl direct eec equival requir laid direct laid ec regul ec tran rev add acknowledg author member state grant compon type approv accept approv grant accord requir abovement regul compon type approv mark altern approv grant accord requir direct articl direct amend accord articl direct eec order account amend ec regul refer articl adapt annex technic progress articl member state adopt publish provis compli direct decemb forthwith inform commiss thereof member state adopt provis refer direct accompani refer occas offici public method make refer laid member state date mention subparagraph member state reason connect audibl warn devic prohibit initi entri servic vehicl conform direct appli provis refer subparagraph june member state commun commiss text provis nation law adopt cover direct articl direct adress member state luxembourg june council presid troejborg oj oj oj oj oj oj direct amend direct eec oj annex requir appli compon type approv audibl warn devic definit purpos direct audibl warn devic mean devic emit acoust signal oper intend give warn presenc manoeuvr vehicl danger road traffic situat devic consist sound emiss orific excit singl power sourc consid audibl warn devic audibl warn devic consist compon emit acoust signal oper simultan result actuat singl control consid singl audibl warn devic type audibl warn devic mean audibl warn devic essenti differ respect aspect trade mark oper principl type power suppli direct current altern current compress air outer shape case shape dimens diaphragm shape type sound emiss orific nomin sound frequenc nomin suppli voltag case warn devic suppli direct extern sourc compress air nomin oper pressur requir audibl warn devic emit continu uniform sound sound spectrum vari percept oper case warn devic suppli altern current requir appli sole constant gener speed speed ly rang warn devic displai sound characterist spectral distribut sound energi sound pressur level mechan characterist order state pass test section sound level measur audibl warn devic prefer test anecho environ altern test semi anecho chamber clear space case precaut order avoid reflect ground measur area provid number absorb screen check spheric distort db hemispher radiu maximum frequenc measur direct measur height devic microphon ambient nois db lower sound pressur level measur devic submit test microphon height height lie line maximum sensit microphon coincid direct sound level warn devic highest level microphon posit diaphragm distanc exit plane sound emit devic distanc devic exit determin relat exit plane closest microphon measur sound pressur level involv class precis sound level meter meet requir iec public edit measur carri rapid time constant weight curv measur sound pressur level fourier transform sound signal measur emit sound spectrum altern octav filter meet requir set iec public edit instanc sound pressur level hz centr octav frequenc band determin ad quadrat mean sound pressur octav band centr frequenc hz case fourier transform method consid refer method audibl warn devic suppli voltag case audibl warn devic receiv direct current test voltag volt measur output side eletr sourc nomin voltag volt audibl warn devic receiv direct current suppli electr gener type type devic acoust characterist type warn devic record altern speed maximum speed state manufactur altern continu oper altern subject electr load test durabl test section carri speed state manufactur equip select rang refer rectifi current test audibl warn devic receiv direct current unsmooth compon voltag termin measur peak peak oper warn devic exce volt resist electr conductor audibl warn devic receiv direct current includ resist termin contact lie close ohm nomin voltag ohm nomin voltag ohm nomin voltag audibl warn devic rigidli mount part part intend purpos manufactur support mass time greater warn devic test kg support arrang reflect wall vibrat signific effect result measur condit set weight sound level exce valu db audibl warn devic intend mope motorcycl tricycl develop power kw db audibl warn devic intend motorcycl tricycl develop power kw sound pressur level hz frequenc band higher frequenc compon hz case db case audibl warn devic intend mope db audibl warn devic intend motorcycl tricycl develop power kw db audibl warn devic intend motorcycl tricycl develop power kw audibl warn devic displai characterist vehicl audibl warn devic displai sound characterist mope characterist set displai audibl warn devic subject durabl test provid section variat voltag rate audibl warn devic receiv direct current maximum altern speed state manufactur altern continu oper case audibl warn devic receiv altern current time lag actuat moment sound reach minimum requir section exce second measur ambient temperatur requir appli pneumat electro pneumat warn devic power suppli condit laid manufactur pneumat electro pneumat warn devic yield acoust perform requir electr audibl warn devic minimum valu quot obtain individu compon multi tone devic compon part emit sound independ maximum sound level achiev compon part oper time durabl test audibl warn devic suppli nomin voltag conductor resist section oper time case warn devic intend mope motorcycl tricycl develop power exceed kw time case warn devic intend motorcycl tricycl develop power kw rate second test audibl warn devic expos forc draught speed rougli sec test conduct insul chamber chamber suffici volum ensur normal dissip heat warn devic durabl test ambient temperatur test chamber lie half requir number oper characterist sound level alter compar test audibl warn devic reset total number oper requir complet audibl warn devic successfulli complet test section reset electro pneumat audibl warn devic lubric oil recommend manufactur oper compon type approv mark audibl warn devic conform type compon type approv bear compon type approv mark meet requir set annex council direct eec appendix inform document respect type audibl warn devic intend wheel motor vehicl attach applic compon type approv submit separ applic vehicl type approv order assign applic applic compon type approv respect type audibl warn devic intend wheel motor vehicl inform set annex ii council direct eec part section appendix administr compon type approv certif type audibl warn devic intend wheel motor vehicl model report technic servic date compon type approv extens make audibl warn devic type audibl warn devic vehicl intend state power output motorcycl tricycl amp ge kw lt kw manufactur address address manufactur repres date audibl warn devic submit test compon type approv grant refus place date signatur delet annex ii requir appli fit audibl warn devic wheel motor vehicl definit purpos direct type vehicl mean vehicl differ essenti differ relat number type audibl warn devic fit vehicl warn devic adapt vehicl posit warn devic vehicl stiff structur part audibl warn devic fit shape materi bodywork form front vehicl affect level sound emit warn devic mask sound requir vehicl fit audibl warn devic compon type approv pursuant direct council direct eec approxim law member state relat audibl warn devic motor vehicl mope equip engin kw maximum design speed exce km fit approv audibl warn devic unapprov mechan warn devic case manufactur declar mechan devic compli requir type devic member state low perform mope market test voltag laid section annex sound pressur level measur condit laid section annex weight sound pressur level emit devic fit vehicl measur ahead vehicl clear space ground smooth case direct current audibl warn devic engin vehicl shut microphon measur devic locat roughli median longitudin plane vehicl pressur level ambient nois nois gener wind db lower sound level measur maximum sound pressur level sought segment ly ground level measur condit section maximum sound level section audibl warn test db db mope db db motorcycl tricycl develop power kw db db motorcycl tricycl develop power kw appendix inform document respect instal audibl warn devic type wheel motor vehicl attach applic compon type approv submit separ applic vehicl type approv order assign applic applic compon type approv respect instal audibl warn devic type wheel motor vehicl inform set point annex ii council direct eec part section appendix administr compon type approv certif respect instal audibl warn devic type wheel motor vehicl model report technic servic date compon type approv extens trade mark vehicl type vehicl manufactur address address manufactur repres date vehicl submit test compon type approv grant refus place date signatur oj direct amend direct eec oj delet