commiss opinion april address govern grand duchi luxembourg draft regul grand duchi implement regul eec regul eec eec perman repres grand duchi luxembourg commiss letter date januari march draft regul grand duchi lai provis implement council regul eec juli introduct common rule intern carriag passeng coach bu commiss regul eec juli prescrib model document refer articl council regul eec commun constitut consult mean articl council regul eec articl regul eec refer commiss note draft regul grand duchi lai implement measur member state requir aforesaid council commiss regul regul eec measur cover inter alia organ procedur measur control penalti breach regul eec cover period valid book passeng waybil process file origin copi passeng waybil relat stamp passeng waybil author inspect offic commiss deliv opinion draft regul grand duchi commiss find subject delai govern duchi luxembourg put forc provis laid fulfil oblig devolv member state virtu articl council regul eec articl commiss regul eec brussel april commiss presid françoi xavier ortoli oj oj