Directive 2003/37/EC in a first stage limited the mandatory application of the EC whole-vehicle type-approval procedure to the vehicle categories T1, T2 and T3 and did not provide for all requirements necessary in order to apply for EC whole-vehicle type-approval on a voluntary basis for other categories.
Mar chéim thosaigh, chuir Treoir 2003/37/CE teorainn le cur i bhfeidhm éigeantach nós imeachta cineálcheadaithe feithicle iomláine CE do chatagóirí feithiclí T1, T2 agus T3 agus níor fhoráladh léi do na ceanglais uile ba ghá chun cur isteach ar chineálcheadú feithicle iomláine CE ar bhonn deonach le haghaidh catagóirí eile.