commiss recommend februari member state applic council direct april approxim law member state relat motor vehicl enforc oblig insur liabil eec virtu articl council direct april approxim law member state relat motor vehicl enforc oblig insur liabil amend council direct decemb vehicl base territori countri provid valid green card certif frontier insur valid territori commun enter territori member state practic differ durat contract insur civil liabil respect motor vehicl form frontier insur render uniform practic member state minimum durat frontier insur prevent abus remov check intra commun frontier insur civil liabil respect motor vehicl frontier insur vehicl countri longer cover entri member state insur civil liabil valid member state reason virtu articl treati establish european econom commun commiss recommend member state ensur contract insur civil liabil respect motor vehicl conclud form frontier insur minimum durat dai brussel februari commiss presid françoi xavier ortoli oj oj correct oj