This is the traffic estimation for February 2014 in France. French schools start their winter vacation in February (see French School Holidays 2013-2014 for more information). This means that there is heavy traffic going to or coming from ski areas. The heaviest days are on Saturday. The 22nd being the worst, it's rated Orange nationally and Red in Rhône-Alpes/Auvergne region.
The Autoroutes (highways) most effected in February 2014 will be A40, A41, A43 and A48.