If the itinerary of the event referred to in article A. 331-20 includes one or more liaison sections within the meaning of article R. 331-18, the application for authorisation must also include a list of participants with their surname, first name, date and place of birth, driving licence number, nationality and home address as well as the registration number of their vehicle issued by the organiser. This list must be submitted to the prefectoral authorities at least six clear days before the start of the event. The organiser must ensure that the registration number allocated is clearly legible and visible on the corresponding vehicle, at the front and rear for category M vehicles, and at the rear or on a number worn by the driver for category L vehicles, as defined in article R. 311-1 of the Highway Code. If all the provisions defined in this paragraph are not complied with, the exemption provided for in article R. 411-29 of the same code shall not apply.