council direct june approxim law member state relat field vision windscreen wiper wheel agricultur forestri tractor 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 tractor compli pursuant nation law relat inter alia field vision windscreen wiper requir differ member state member state adopt requir addit place exist rule order eec type approv procedur subject council direct eec march approxim law member state relat type approv wheel agricultur forestri tractor appli respect type tractor adopt direct articl quot agricultur forestri tractor quot mean motor vehicl fit wheel caterpillar track axl main function li tractiv power special design tow push carri power tool machineri trailer intend agricultur forestri equip carri load passeng direct appli tractor defin preced paragraph fit pneumat tyre axl maximum design speed km articl member state refus grant eec type approv nation type approv tractor ground relat field vision windscreen wiper satisfi requir set annex articl member state refus registr prohibit sale entri servic tractor ground relat field vision windscreen wiper satisfi requir set annex articl amend adapt technic progress requir annex adopt accord procedur laid articl direct eec articl member state put forc provis order compli direct month notif forthwith inform commiss thereof member state ensur text main provis nation law adopt field cover direct commun commiss articl direct address member state luxembourg june council presid genscher oj oj oj annex field vision definit requir definit field vision quot field vision quot mean forward later direct driver tractor refer point quot refer point quot mean posit fix convent tractor driver ey notion locat singl point refer point situat plane parallel longitudin median plane tractor pass centr seat mm vertic line intersect plane surfac seat mm direct pelvic support vertic plane pass front edg surfac seat perpendicular longitudin median plane tractor figur refer point determin relat seat unoccupi fit central posit tractor manufactur semi circl vision quot semi circl vision quot mean semi circl radiu point situat horizont plane road vertic refer point face direct motion arc semi circl li front tractor diamet bound semi circl angl longitudin axi tractor figur mask effect quot mask effect quot mean chord sector semi circl vision ow structur compon roof pillar sector vision quot sector vision quot mean part field vision bound top horizont plane pass refer point plane road zone ly semi circl vision form continu sector semi circl vision chord long perpendicular plane parallel longitudin median plane tractor pass centr driver seat bisect plane swept area windscreen wiper quot swept area windscreen wiper quot mean area outer surfac windscreen swept windscreen wiper requir gener tractor construct equip road traffic farm forest driver adequ field vision usual condit pertain highwai work undertaken field forest field vision consid adequ driver view part front wheel requir fulfil check field vision procedur determin mask effect tractor horizont surfac shown figur horizont support level refer point mount point sourc light mm symmetr mount refer point support rotat centr point vertic axi pass refer point purpos measur mask effect support align line join light sourc perpendicular line join mask compon refer point silhouett overlap project semi circl vision mask compon result switch light sourc altern record accord item figur mask effect exce mm mask effect due adjac structur compon mm width posit line join centr invis chord sector semi circl vision length mask effect semi circl vision insid sector vision defin item mask effect exceed mm exceed mm permiss compon caus redesign reloc mask effect lie sector vision blind spot caus type approv rear view mirror disregard design mirror instal mathemat determin mask effect binocular vision altern procedur set item accept individu mask effect determin mathemat requir item appli respect size distribut number mask effect binocular vision inter ocular distanc mm mask effect express mm formula gt pic file quot quot gt distanc millimetr compon obstruct vision refer point measur visual radiu join refer point centr compon perimet semi circl vision width millimetr compon obstruct vision measur horizont perpendicular visual radiu test method refer item replac shown equival case mask effect articl direct eec appli procedur item transpar area windscreen tractor fit windscreen transpar area thereof requir item satisfi windscreen wiper tractor fit windscreen equip motor driven windscreen wiper area swept wiper ensur unobstruct forward view chord semi circl vision long sector vision rate oper windscreen wiper cycl minut gt pic file quot quot gt gt pic file quot quot gt gt pic file quot quot gt