Travellers are already able to complain, as they see fit, about the way they have been treated. In this instance, however, that right is restricted by an amendment requiring that travellers complain in a particular manner. I do not understand how this increases their rights in any way. The English version reads, "may, in a prescribed manner".
Why would we require a traveller to file a complaint in a specific manner? Here we are telling travellers who wish to complain to their government about the way they have been treated that they may do so in only one way.