council decis grant nation aid author italian republ favour road transport undertak ec council european union regard treati establish european commun articl subparagraph thereof regard request made govern italian republ februari articl council direct eec octob harmonis structur excis duti miner oil council authoris member state introduc exempt reduct excis duti charg miner oil specif polici purpos articl council decis ec articl council decis ec march reduc rate excis duti exempt duti miner oil specif purpos decemb derog provis council direct eec itali authoris continu appli reduc rate excis duti diesel fuel road transport oper provid rate respect oblig laid direct eec minimum rate laid articl thereof itali provid nation legisl januari reduct rate excis duti diesel fuel road transport oper mean letter date april publish oj commiss notifi itali decis initi procedur laid articl treati abovement measur environment energi conserv purpos prompt italian author rais rate excis duti pollut fuel discourag increas taxat high rise cost due rise intern price crude oil sever neg repercuss activ road transport sector introduct compensatori measur avert econom social difficulti road sector suffer market fragment itali morpholog await measur infrastructur level remedi adequ measur discriminatori fact firm sector benefit tax measur form substanc contrari common interest measur temporari expir decemb effect juli refund amount substanti reduc except circumst exist make aid derog extent strictli remedi econom social difficulti road transport sector concern arisen compat common market adopt decis articl measur adopt itali accord articl decis ec articl decis ec consid compat common market articl decis address republ itali brussel council presid piqué camp oj direct amend direct ec oj oj oj oj direct amend direct ec