| 11.1. | Approval under this Regulation may be granted with respect to a protective device additionally equipped with an acoustic or visual warning device, or with respect to the optional fitting of supplementary devices to prevent the unauthorized use of the vehicle, provided that the supplementary devices require a separate means of activation; the Contracting Parties to the Agreement which apply this Regulation shall not be deemed to be precluded by the provisions of Article 3 of the Agreement to which the Regulation is annexed from prohibiting such additional devices on vehicles registered by them. | a0c0 |