French speed limits, and the wet-weather rule most visitors never learn

France posts four headline limits: 130 km/h on autoroutes, 110 on divided expressways, 80 or 90 on open roads, and 50 in towns, with 30 the new normal in city centres including nearly all of Paris. The rule visitors never learn until the fine arrives: rain cuts the two fastest limits automatically, 130 becomes 110 and 110 becomes 100, no signage required. Here's the full picture, including where the 80/90 confusion comes from and how enforcement treats a rental.

The limits by road type

• Autoroutes: the motorway speed limit in France is 130 km/h, dropping to 110 in rain, and 50 in fog under 50-metre visibility. New licence holders (under 3 years) are capped at 110 at all times.
• Divided expressways (dual carriageways with a barrier): 110 km/h, 100 in rain.
• Open roads: 80 km/h by default since 2018, but departments may restore 90 on chosen roads, and many have. The practical rule: the signs on the road you're on are the law, and 80 is the assumption where signage is absent.
• Towns: 50 km/h between the name sign that opens a town and the barred sign that closes it, with 30 km/h zones spreading across city centres. Paris runs 30 nearly everywhere, with the Périphérique ring road at 50 since late 2024.

"Rain" for the reduced limits means active precipitation, not a damp road, and the reduction binds you whether or not any sign repeats it. New-licence drivers carry their lower caps (110 autoroute, 100 expressway) for three years, which quietly includes visiting new drivers too.

Enforcement: cameras, tolerance, fines

France runs one of Europe's densest camera networks: fixed radars, average-speed sections, red-light cameras, and unmarked mobile units in ordinary-looking cars. The technical tolerance is 5 km/h under 100 and 5 percent above, which at 130 means flashed at 137, so the cushion you're used to at home does not exist here. Fines scale from €68 (under 20 km/h over, outside towns) through €135, to court territory above 50 km/h over, where confiscation of the vehicle is legally possible, a genuinely bad day with a rental.

For rental drivers, the camera photographs the plate, the notice reaches the agency, and the agency recharges your card with an admin fee added, functioning across borders. Details of that pipeline and the rest of the rulebook sit in our driving in France guide; the official reference for limits and penalties is securite-routiere.gouv.fr. Practical calibration: French drivers themselves mostly hold the limit on camera-dense autoroutes, and the average-speed sections make bursts pointless anyway. Set the cruise control at the limit and the whole subject disappears.

Reading the road

Three signage habits cover most confusion. Town limits are implied, not always posted: the red-bordered town name sign starts the 50 zone, the same name barred diagonally ends it. Limits end at the next junction or the explicit end-of-limit sign, a barred circle. And electronic overhead panels on autoroutes override the posted defaults, dropping limits for traffic, weather or pollution episodes; on pollution days, prefectures can cut all limits by 20 km/h region-wide, shown on those panels and enforced like any other limit.

Visitors renting from us hear one line at pickup on this subject, and it's the honest one: the cameras are real and the cruise control is your friend. Set your tourist rental to the number on the sign and French distances pass quickly anyway, tolls and all, as covered in the péage guide.