http://www.service-public.fr/actualites/002384.html?xtor=EPR-140
You need to have one in the glove compartment of your car by the 1/7/12; available at most super markets and service stations.

information in English can be found here: http://paris.angloinfo.com/countries/france/driving.asp

Many thanks for the timely reminder!

Updated info here too: http://blogs.angloinfo.com/france-blog/2012/06/12/breathalysers-obligatory-in-vehicles/

eeeekkkk! left it too late - none available near us in the 5th - anyone know of somewhere that they ARE in stock?

I have asked in our local supermarkets and none available...they say there are none anywhere and don't know when new stocks will be in...its legal from 1 July, but if stopped without one you will be warned, until November when the fine comes in - My supermarket told me not to bother until November - maybe they will have some new stock in before then !!

colin - tee hee hee; you set my mind at rest - I remember the same old malarky with the horrid fluorescent jackets and triangles - you HAD to have them by X date and then there were none in stock...
PS 'spose used breathalysers don't count
;-)