To carry out their duties, the officers mentioned in article L. 1421-1 may operate on the public highway and enter between 8 a.m. and 8 p.m. the premises, places, installations and means of transport where the provisions they are monitoring are to be applied. They may also enter outside these hours when access to the public is authorised or when an activity is in progress. If the occupier refuses access, this may be authorised by the judicial authority under the conditions provided for in article L. 1421-2-1, without prejudice to the application of the penalties provided for in article L. 1427-1.
When the aforementioned premises, places, installations and means of transport are used as dwellings, these inspections may be carried out between 6 a.m. and 9 p.m., and after authorisation by the judicial authority under the conditions provided for in article L. 1421-2-1 if the occupant opposes the visit.