4 . During the Construction Equipment Joint Technical Liaison ( JTLM ) meeting in 2003 between the industry associations from Europe ( CECE ) , the USA ( AEM ) and Japan ( CEMA ) , it was decided to elaborate a CRO ( `` Common Regulatory Objective '' , as proposed by the mechanism of the UNECE `` International Model '' ) for Earth-Moving Machines within UNECE WP.6 .