Once again the French have bought in some new laws regarding Hi Vis vests
New laws have come into force for motorcyclists and scooter riders regarding the requirement to carry a fluorescent hi viz vest or jacket while riding in France. (From January 2016)
The new €11 fine applies if you get spot checked by police and you don’t have one with you, though the fine is €135 if you are caught not wearing it at the roadside (or on the hard shoulder) in the event of an emergency due to an accident, flat tyre or breakdown. (pillion passengers need to have one as well)
The introduction of the fine has come into force following yet more poor figures on the number of road deaths in France.
There is a lot more information on this web site http://www.drive-france.com/faqs/motorcycling-france/ which mentions filtering etc. Happy riding!