If you are travelling in or through France in the future please note the following:-
Satnav and speed camera alerts
Since 3 January 2012 French laws have prohibited drivers from carrying any device capable of detecting speed cameras. This includes products or devices able to warn or inform of the location of speed cameras e.g. satnav or gps systems capable of showing speed camera sites as Points of Interest.
The law is primarily aimed at speed camera detectors and sat-navs. It is unlikely that the French police will turn their attention to atlases but there is no guarantee this would be the case.
As well as the ban on warning devices, the French government is installing around 400 new, unsigned, fixed speed cameras as well as taking down signs indicating the location of existing camera sites.
If you have a satnav capable of displaying French camera locations in France then you must at least disable camera alerts. Contact the manufacturer for advice too as a software or database update is likely to be available that will remove camera data for France from the device.
If you have a satnav system built into your car then contact the vehicle manufacturer in the first instance.
On 1 March 2012 the French government confirmed that from 1 July 2012 drivers of all motor vehicles and motorcycles (excluding mopeds) must carry a breathalyser.
The regulation will be enforced from 1 November 2012 and anyone stopped after that date who fails to produce a breathalyser when requested will receive an on the spot fine of €11.
The official announcement states that one unused, certified breathalyser must be produced showing the French certification mark NF. Carrying two single-use breathalysers will ensure that if one is used or damaged, you will still have a spare to produce.
The breathalyser produced has to be in date - single-use breathalysers normally have a validity of twelve months
Source :- New rules for drivers abroad | AA