What i was surprised about were the noting of the ARB siderails front and rear bars and winches, and roofrack - if these are so in need of 'engineering' why doesn't everyone who bolts one on have to jump thru the same hoops? I 'expected' they were already exempt under some sort of 'standard optional equipment' process that the likes of ARB might have gone thru to ensure they are ADR compliant - maybe its simply being conservative getting them on the plate, but there really is no 'test' rolled out to validate each of these add-ons.