8 French Road Rules That Will Catch Out Even the Most Experienced American Drivers (Read this Before Driving in France)

Driving in France is a minefield of unexploded little bombs just waiting to come out and get you. I’ve had my own fair share of experiences since living here, and in the more rural parts, where the lanes aren’t big enough for two cars, and you suck in when driving past, you’re quite literally taking your life in your own hands.

You’d think, being that America drives on the same side of the road, that driving in France would be simple, but that’s not the case. It’s not that the French road rules themselves are impossible to learn; it’s more that several of them contradict what your instincts tell you. Plus, there have been some changes that could get you into serious trouble if you don’t know about them.

Add to that that the French drive like suicidal maniacs, well, they do where I live, and it could be a recipe for disaster. So, forewarned is forearmed, which should mean a relaxing, incident-free vacation. 

8 French Road Rules to Know Before Your Trip

What follows are eight rules to help any American driver before they pick up their rental car.

Priorité à Droite Is Still Alive in Villages

This is the single rule that catches out more experienced drivers than any other, and it’s the one I wish someone had drilled into me before I started driving here. Priorité à droite means the car coming from your right has the right of way, even if you’re on what looks like the main road and they’re emerging from what appears to be a side street.

It was the default rule across France for most of the 20th century, and although it’s been overridden on most major roads and roundabouts, it still applies in plenty of villages and smaller towns unless signs say otherwise. 

You’ll be driving through the main street of a sleepy little village in the Dordogne, doing 30 mph, and a Renault will pull out of an unmarked lane on your right without even slowing down. Legally, they’re in the right. You’re the one who has to brake.

The signs that cancel priorité à droite are a yellow diamond with a white border (you have priority) or an upside-down red triangle (you must yield). When you see the yellow diamond with a black bar through it, your priority has ended, and the default rule is back.

I’ve taken to slowing down at every village entrance now, as a matter of course, and it’s saved me more than once.

The Yellow Headlight Sticker Myth, and What You Actually Need

Plenty of American drivers still arrive in France worrying about yellow headlights. The yellow-tint requirement for foreign cars was dropped in 1993, so unless you’re driving a vintage Peugeot to a classic car rally, you can forget about it. 

What you do need is something called headlight beam deflectors if you bring your own car from a right-hand-drive country, but that won’t apply to most American visitors in rental cars.

What you actually need to carry in the car is a different list, and it’s the list that gets people fined. A reflective high-visibility vest must be inside the cabin (not in the trunk), within reach without getting out. A red warning triangle. A spare set of headlight bulbs is technically required, as well. 

If you’re driving in winter in mountain areas, you’ll see signs requiring snow tires or chains from November through March under the Loi Montagne rules introduced in 2021.

And then there’s the breathalyzer. France did pass a law in 2012 requiring drivers to carry a single-use breathalyzer, but the fine for not having one was suspended before it ever took effect, and the requirement itself was scrapped in 2020. You don’t need one. If a rental agency tries to sell you a kit that includes one, smile and skip it.

Your GPS May Actually Be Illegal

In France, it’s illegal to use any device that warns you about the location of fixed speed cameras or police checkpoints. The law dates from 2012 and covers radar detectors, certain features of GPS units, and apps like Waze and Coyote, at least in their default configurations.

What the French government negotiated, instead of a full ban, was a compromise. Apps and GPS units sold in France now show warnings about generalized ‘danger zones’ rather than specific camera locations. If you’re using a GPS app from home with the speed camera alert feature switched on, you’re technically breaking the law, and the fine can run up to 1,500 euros plus confiscation of the device. 

Before you set off, dig into the settings of your navigation app and turn off speed camera alerts. Google Maps lets you do this in the navigation settings, and Waze has a France-specific mode. If you’re renting a car with a built-in GPS, it’ll already be set up correctly. The danger zone alerts that remain are vague on purpose, but they still tell you to pay attention, which is the point.

Speed Limits Change When It Rains, and the Numbers Are in Kilometers

French speed limits drop automatically in wet weather, and the rule applies whether or not there’s a sign reminding you. On highways (autoroutes), the limit goes from 81 mph to 68 mph when it’s raining. On dual carriageways, it drops from 68 to 62.

On single-carriageway rural roads, it goes from 50 to 49. For new drivers (those with less than three years of experience), the limits are even lower regardless of the weather.

The rural single-carriageway limit is the one that trips people up most. It was lowered from 56 mph to 50 mph in 2018, then partially raised again in some départements after local protests. Some départements kept the 50 limit, others went back to 56, and the only way to know is to read the signs at the départemental border. 

Speed cameras in France are unforgiving, and the fines are sent to your rental company, which then charges your credit card with an administrative fee on top. The tolerance below 62 mph is around 3 mph; above that, it’s about 5 percent. Don’t assume you’ve got 10 mph of grace like you might at home. You don’t.

Roundabouts Don’t Always Work the Way You Think

Most French roundabouts now follow the same rule as American or British ones: traffic already on the roundabout has priority, and you yield as you enter. You’ll see a yield sign or the words cédez le passage on the approach. Easy enough.

But a small number of older roundabouts, particularly in the south and in some Paris-area squares, still operate under priorité à droite, meaning cars entering the roundabout have priority over cars already on it. 

The Place de l’Étoile around the Arc de Triomphe is the most famous example. Twelve avenues feed into it, no lane markings, and entering traffic has the right of way. Most rental car insurance policies specifically exclude accidents that happen on the Étoile, which tells you something.

The way to tell which type you’re approaching is the signage. A standard French roundabout will have the yield triangle and often vous n’avez pas la priorité (you do not have priority) on the approach. 

If there’s no yield sign and no priority sign, assume the old rule applies and that cars entering have priority over you. When in doubt, slow down and watch what the locals are doing. They know.

Phones, Earpieces, and What Counts as Distracted Driving

Using a handheld phone while driving has been illegal in France since 2003, which is no surprise. What surprises Americans is that since 2015, it’s also illegal to use any headphones, earbuds, or earpieces while driving. 

That includes Bluetooth earpieces, AirPods, wired headphones for phone calls, and even those single-ear hands-free units that used to be the legal workaround. The fine is 135 euros and three points off a French license.

The only legal way to take a call while driving in France is through the car’s own built-in speaker system or a speaker mounted in the car. If your rental doesn’t have Bluetooth, you’re meant to pull over completely and switch off the engine before answering. Pulling onto the shoulder of an autoroute with the engine running doesn’t count, and police have ticketed people for exactly that.

In 2020, the rules tightened again. If you’re stopped for any other infraction (a broken taillight, an illegal turn) and the officer sees a phone in your hand, your license can be suspended on the spot for up to six months. For a tourist, that means the rental agreement is void, and you’re getting a taxi back to the hotel. 

Crit’Air Stickers and the Low-Emission Zones Nobody Mentions

If you’re planning to drive into Paris, Lyon, Marseille, Toulouse, Strasbourg, Grenoble, or any of the growing list of French cities with low-emission zones (ZFE, zones à faibles émissions), you need a Crit’Air sticker on your windshield. The sticker rates your car’s emissions on a scale from 0 (electric) to 5 (oldest diesel), and depending on the day and the air quality, certain categories are banned from entering the zone.

The rules expanded significantly in 2025, and more cities are joining each year. Rental cars from major French agencies should already have the sticker. If you’re driving your own car from another European country, or you’ve rented from a smaller agency, check before you head into the city. The fine for entering a ZFE without a sticker is 68 euros for cars, and it’s enforced by camera as well as by police.

The sticker itself costs about 4 euros, and you order it online from the French government site, certificat-air.gouv.fr. It takes a few weeks to arrive, so this is something to sort before you travel if you’re driving your own car. For rentals, ask the agency to confirm the car has the right sticker for the cities you’re visiting. 

Drinking and Driving: The Limit Is Lower Than You Think

The blood alcohol limit in France is 0.05 percent, lower than the 0.08 percent limit in most American states. For drivers with less than three years of experience, it’s 0.02 percent, which is effectively zero. 

French police run random breathalyzer checkpoints (contrôles d’alcoolémie) without needing probable cause, and they’re common on Sunday afternoons, after major holidays, and around any town that’s just hosted a wine festival. Refusing the test is treated as an admission of guilt and carries the same penalties as a positive result: a fine of up to 4,500 euros, immediate license suspension, and possible prison time for higher readings.