Individual Vehicle Approval application and guidance IVA 1T Date published: 27 September 2023 Application form and guidance for Individual Vehicle Approval and entry into service consent - O1, O2, O3 and O4 category trailers. Documents IVA application and guidance IVA 1T Adobe PDF (637 KB) Help viewing documents Share this page Share on Facebook (external link opens in a new window / tab) Share on Twitter (external link opens in a new window / tab) Share by email (external link opens in a new window / tab)