council decis april conclus agreement european econom commun swiss confeder simplif inspect formal respect carriag good eec council european commun regard treati establish european econom commun articl thereof regard propos commiss conclus agreement european econom commun swiss confeder simplif inspect formal respect carriag good make improv flow traffic frontier contract parti advis approv agreement decid articl agreement european econom commun swiss confeder simplif inspect formal respect carriag good approv behalf commun text agreement attach decis articl commun repres joint committe provid articl agreement commiss assist repres member state articl presid council carri notif provid articl agreement luxembourg april council presid reynold