Car Door Locks and Door Stoppers The CCC certification scope under the Regulations is as follows: (1) M1 and N1 vehicles for passenger access to the cabin side door (including sliding doors) or to the rear door locks; (2) M1 Door hinges on the side or rear door of a vehicle used for boarding and disembarking passengers on category 1 and N1 vehicles, excluding rails and other sliding door support elements. The certification standards are the performance requirements and test methods for automotive door locks and door retainers GB 15086. Please refer to the CNCA-C11-10: 2014 Implementation Guide for automotive door locks and door retainers for specific information.