Member States shall ensure that there is at least one root certification authority, an enrolment authority and an authorisation authority able to carry out, for the purpose of on-board weighing equipment, the functions set out in the Certificate Policy for Deployment and Operation of European Cooperative Intelligent Transport Systems (C-ITS) referred to in the delegated act supplementing Directive 2010/40/EU of the European Parliament and of the Council with regard to the deployment and operational use of cooperative intelligent transport systems, adopted on the basis of Article 6(1) of that Directive.