council direct decemb amend direct eec approxim law member state relat roll protect structur wheel agricultur forestri tractor eec council european commun regard treati establish european econom commun articl thereof regard propos commiss cooper european parliament regard opinion econom social committe adopt measur aim progress establish intern market period expir decemb intern market compris area intern frontier free movement good person servic capit ensur articl direct eec amend direct eec limit scope direct wheel agricultur forestri tractor mass tonn increas tonn maximum mass laid present entail major disadvantag standpoint safeti road safeti work land roll protect structur tractor mass tonn treat tractor mass tonn accord benefit rule adopt direct articl line fourth indent articl direct eec mass tonn replac mass tonn articl member state bring forc law regul administr provis compli direct month januari forthwith inform commiss thereof articl direct address member state brussel decemb council presid cresson oj oj oj oj oj oj