Bison futé forecasts difficult to very difficult traffic conditions across France this weekend, February 20-22, coinciding with the start of winter holidays for Zone C (Paris, Créteil, Versailles, Montpellier, Toulouse) and neighboring countries. Île-de-France and eastern France are expected to experience orange traffic alerts on Friday, February 20, with significant congestion anticipated on major routes like the A6, A31, and A36 due to departures for ski resorts. Saturday, February 21, is predicted to be particularly challenging, with red alerts in Burgundy, the East, and Auvergne-Rhône-Alpes for both departures and returns, impacting routes such as the A6, A31, A39, A40, A43, RN85, and the Mont-Blanc tunnel access. Traffic is expected to normalize by Sunday, February 22.