With a view to developing the market for high-speed passenger services, promoting optimal use of available infrastructure, and in order to encourage the competitiveness of high-speed passenger services resulting in beneficial effects for passengers, without prejudice to Article 11(5), the exercise of the right of access provided for in Article 10 as regards high speed passenger services may only be subject to the requirements established by the regulatory body in accordance with this Article.

Where the regulatory body, following the analysis foreseen in Article 11(2), (3) and (4), determines that the intended high speed passenger service between a given place of departure and a given destination compromises the economic equilibrium of a public service contract that covers the same route or an alternative route, the regulatory body shall indicate possible changes to the service which would ensure that the conditions to grant the right of access provided for in Article 10(2) are met. Such changes may include a modification of the intended service.