For the purposes of re-routing or removal, the transport of foreign nationals placed or held in a waiting area or place of detention may be the subject of a public contract awarded by the territorially competent prefect under the conditions laid down in the public procurement code. In this case, the purpose of the contract is limited to the provision of vehicles and the driving and maintenance of these vehicles, excluding the direct surveillance of foreign nationals and the implementation of any coercive measures with regard to them, which fall within the exclusive remit of national police officers and national gendarmerie military personnel.