From November 1 to March 31, drivers in Ain's mountainous areas must have winter equipment like chains or 3PMSF tires. The rule will apply again in 2027.
Winter equipment mandate in Ain
From November 1 to March 31, drivers in the mountainous areas of the Ain department will need to have winter equipment in their vehicles. This requirement will also apply during the same period in 2027, covering the eastern part of the department.Accepted winter equipment
Drivers can either use snow chains or appropriate socks for snow, or they can install four winter tires marked with the 3PMSF (3 Peak Mountain Snow Flake) symbol. These tires are specifically certified for use in snowy conditions.Identifying 3PMSF tires
The 3PMSF tires can be identified by an Alpine symbol—a three-peak mountain with a snowflake in the center—alongside one of the markings "M+S", "M.S", or "M&S". Only tires with this marking are considered valid substitutes for chains or socks.Equipment requirements by vehicle type
Private cars, light commercial vehicles, and campers can choose between metal or textile chains for at least two driven wheels or four 3PMSF tires. Larger vehicles like buses and trucks have different requirements, including anti-skid devices or specific tire placements.Affected communes in Ain
The regulation applies to numerous communes in the Ain department, including Ambléon, Andert-et-Cordon, Anglefort, and many others. A full list of affected areas is provided for reference.Tour de France 2027
Also see: Tour de France 2027: The Park of the Birds resumes its flight.
