4.
The relevant national regulatory authorities may adopt measures to ensure effective cross-border cooperation in the enforcement of the national laws adopted pursuant to this Directive and to create harmonised conditions for the provision of services involving cross-border data flows.
The national regulatory authorities shall provide the Commission, in good time before adopting any such measures, with a summary of the grounds for action, the envisaged measures and the proposed course of action. The Commission may, having examined such information and consulted ENISA and the Working Party on the Protection of Individuals with regard to the Processing of Personal Data established by Article 29 of Directive 95/46/EC, make comments or recommendations thereupon, in particular to ensure that the envisaged measures do not adversely affect the functioning of the internal market. National regulatory authorities shall take the utmost account of the Commission's comments or recommendations when deciding on the measures.