I noticed that UK retailer sell packs of breathalysers for motorists intending to drive cars to France.
An RAC web-page says
While driving in France you are required by law to carry the following items. Hefty on-the-spot fines can be issued for failing to carry specific items:
Breathalysers/alcohol test (As of January 2013 the French government announced that the introduction of an €11 fine has been postponed indefinitely)
Another website says
Since April 2013, carrying a brethalyzer with you in the car has been obligatory in France... by law - at least in theory. BUT this is a wonderful law that you are free to observe or not observe, as there is no penalty for drivers caught without a brethalyzer in their car.
Single-use certified breathalyzers are now available in many supermarkets, chemists and garages throughout France, at a cost of about 1 €uro each. So the cost is minimal.
Contrary to information posted on some sites, the new law (Decree no 2012-284) does not oblige drivers to self-test after having a drink. But those who plan to self-test to be on the safe side should have at least two breathalyzers in the car, if not more.
So what does French law actually require?
Do drivers visiting France need to obtain and carry these?
What are drivers expected to do with them, if anything?
What exactly happens if you are stopped by French police and found not to have them.
What happens if you are stopped by police on an autoroute, required to use one of your two single-use breathalysers and left without two breathalysers? Do you call a taxi?