This part of the IEC 62625 series covers the standardized test methods for verifying the compliance of an On board Driving Data Recording System implementation with the requirements specified by IEC 62625-1. Furthermore it covers the conformity testing criteria for designed and manufactured ODDRS. This document includes the list of the requirements specified by IEC 62625-1 and the relevant acceptance conditions for ODDRS at Design Review, Type Test and Routine Test phases. For the Train Level Design Review and Train Level Test phases, this part provides guidelines for the conformity testing methods to be applied to the ODDRS installed on the train. This part does not cover the conformity assessment schemes that, according to ISO/IEC Directives Part 2, are the responsibility of ISO policy committee Committee on conformity assessment (ISO/CASCO). Consequently, this part does not include elements related to conformity assessment aspects other than Design Review and testing provisions for the products, processes or services which implements the requirements specified in the by IEC 62625-1. This part does not delete, change or interpret the general requirements for conformity assessment procedures and vocabulary detailed in ISO/IEC 17000.