step-by-step type-approval
as defined in Regulation (EU) 2018/858 of the European Parliament and of the Council of 30…, Article 3, point (9) (Definitions)
the procedure consisting of the step-by-step collection of the whole set of EU type-approval certificates or UN type-approval certificates for the systems, components and separate technical units forming part of a vehicle, and which leads, in its final stage, to the whole-vehicle type-approval;