1 . FREE MOVEMENT OF GOODS - QUANTITATIVE RESTRICTIONS - MEASURES HAVING EQUIVALENT EFFECT - IMPORTED USED BUSES - NON-ADMISSION TO REGISTRATION PROCEDURE - OBSTACLE TO INTRA-COMMUNITY TRADE ( EEC TREADY , ART . 30 ) 2 . FREE MOVEMENTS OF GOODS - EXCEPTIONS - PROTECTION OF HUMAN LIFE - ROAD SAFETY - VEHICLE ROADWORTHINESS TESTS - COMPETENCE OF THE MEMBER STATES - LIMITS - IMPORTED USED BUSES - NON-ADMISSION TO REGISTRATION PROCEDURE - JUSTIFICATION - NONE ( EEC TREATY , ART . 36 )