It’s entirely possible to vacation in France without a car. High-speed trains connect the big cities as fast as planes, and even the slower trains are faster than going by car. And inside any big city, a car is more of a hassle than anything—parking is nigh impossible.
A car is useful only if you want to get out into the countryside, for example, to go from village to village, or to get out into the garrigue. Even if you plan to bike, it’s important to know the rules of the road, which aren’t at all like in the U.S.

Possibly the most important, or the thing the least like the U.S. is priorité à droite. When in doubt, priority is to the car on the right. There are no four-way stops. A triangular sign (point up), bordered in red, with a black X means at the next intersection, you have to stop for any cars coming from the right. Look out; sometimes the next intersection is with an alley you barely see, and the locals will plow right into you because they know they have the right of way. In case of an accident, fault is easy to determine—the car dented on its right side is wrong.

The French hate stop signs. Instead, they paint a heavy white line at intersections where you are supposed to stop. So you have to watch the pavement as well as the signs.
A dashed line across the road means yield. (Actually, they often interpret it as ‘I see a car coming, so I’m gunning it to cut in front.’ So you’ll probably have to slam on the brakes a lot.) It can be a dashed line instead of a solid stop line like above, which basically means you can do a rolling stop. Or it can be where you merge into traffic.

As in the U.S., a dashed center line means you can pass and a solid line means no passing. Sometimes, they have a solid line where there is a long sight line, just because the road curves a bit. And sometimes, they have a dashed line where you can’t see oncoming cars. Lesson: just because it’s a dashed line, it doesn’t mean it’s a good idea to pass. And beware of passing stuff like tractors and bikes where there’s a solid line because you can get a ticket if a cop sees you. Also: they put curved arrows when the dotted lines are about to end, meaning it’s too late to start to pass.
Speaking of cops, they rarely pull you over. Instead, they sit in their cars or hide in the bushes with radars that take a picture of you speeding by. The picture is mailed to you (or to the car rental place, which will then just bill your credit card). No sweet-talking your way out of it. With special binoculars, they can get you from over a kilometer away. They do have traffic stops, where they check every car or every fourth car or whatever, to check for drunk drivers. They are strict: the limit is 0.5, which is about one glass of wine. When you go to wine country, you’re going to need a designated driver (called le capitain). The French are very sharp at spying cops in hiding and will flash their headlights when there’s a speed trap or traffic stop ahead (or for other reasons, like an accident, or a mess on the road—whatever the reason, it’s best to slow down).
There are radar signs on the highways, which indicate a fixed radar lurks ahead. They, too, take pictures of speeders.
Speed limits, unless indicated otherwise are (in kilometers per hour):
50 in towns of any size—as soon as you get to the sign that marks the town limit, you have to slow down to 50. Watch out, because there could be signs limiting the speed further, like to 30.

80 out of town on any road (tiny track between vineyards, county road, national highway). Sometimes the speed will be limited to 70, but that will be indicated with a sign. Beware: the speed limit changed July 1 to 80 kph from 90.
110 where indicated on national highways that have two lanes in each direction, divided by a median (just because you have two lanes doesn’t automatically mean you can go faster).
130 on autoroutes, except when it’s raining and then it’s 110 (and yes, they do check).
A triangular road sign with a heavy black arrow, intersected by a thinner line means a crossroads is ahead.
A diamond-shaped yellow sign bordered in white means you have priority. Same sign with a black line through it means you no longer have priority (so look out for the black X or the arrow with a line through it, which warns you of intersections where you don’t have priority…but they don’t always mark these intersections).
A circular sign bordered in red with a white center means cars aren’t allowed. Not the same as a do not enter sign, where you would simply be going the wrong way on a one-way street.
A triangular sign with three curving arrows making a circle means slow down for a roundabout ahead.
Céder le passage = yield. Usually with a triangular sign, white bordered in red, with the point down.
A sign with a red circle and a red car on the left and a black car on the right means no passing.
A blue sign with arrows pointing up and down, with one in black (or white) and the other in white (or red) means the road is narrow and the car in the direction of the bigger arrow has right of way.
A round sign with a blue center and a red border with a red line through it means no parking. The sign on the right, above, means you need one of those little hour-cards that you can buy at a bureau de tabac. You set the time you arrived. Same sign with an X means no stopping.
A round sign with a black line through means end of something. A sign like that with the number 70, for example, means end of the 70 kph speed zone, i.e., 80 kph.
A square blue sign with a P means parking. If it has a little meter in the corner, it means you have to find the meter (someplace on the street, it might be two blocks away) and pay and put the ticket on your dashboard so the meter readers can see it.
A square blue sign with a kind of a T, where the T is in red, means dead end.
Signs for highways with the city names on green backgrounds mean they are free highways.
The same kinds of signs with blue backgrounds mean tollroads.
The same town signs on white background mean departmental roads.
Roads are numbered like this:
D123 (I’m making up numbers here) with yellow background means a departmental road. Like a county road. Small, lots of stops. Usually, the bigger the number the smaller the road.
N123 with a red background is a national highway. Can be 1, 2 or 3 digits.
A12 with a red background is an autoroute, usually toll, but some stretches may be free. (1 or 2 digits)
E3 with a red background is a European highway. This just means you can follow the same road across borders and perhaps not get lost because the national numbering systems aren’t the same. (1 or 2 digits)
Sortie means exit. The exit signs are an oval with the autoroute sign (two parallel lines converging in perspective) and a little arrow coming out of the right line, along with the number of the exit.
A kind of double white X on a blue background, with the points of the X connected to each other by curved lines, means a junction of two autoroutes.
At the tollbooths, do not go in the ones marked with a T (usually an orange T). Those are for people who have the RFID tags, like EZ Pass. A blue or white sign that says CB means credit cards (Cartes Bancaires). A green sign, usually with a kind of outline of a person in profile leaning out a window, or with a bunch of circles (for coins), means you can pay in cash, to an attendant.
A curved arrow painted on the ground means merge in the direction of the arrow. So if you’re getting onto the highway, it’ll point to the left, meaning the entry ramp is ending and you need to move over. Or if three lanes turn into two, it’ll point to the right, meaning the left lane is about to disappear. Sometimes these turn up where there’s road construction.
Aire = rest stop. Watch out: some have gas/food and some are just with toilets and picnic tables. They are marked.

Péage = toll.
Rocade = peripherique = ring road that goes around the town.
Sortie de camions = truck exit/entrance (caution for slow trucks)
Piétons = pedestrians
Attention! Nids de poules en formation = beware! Hens’ nests (potholes) forming. This is on the road to Carcassonne and I giggle every time I see it. The road has been repaved and now is as smooth as a baby’s bottom, but the sign remains.
My favorite, though, is the top sign, which reminds me of “PeeWee’s Big Adventure,” where PeeWee is in the truck with Large Marge.
I just don’t have time today to write. This is a repost of one of my earliest entries, updated with the new speed limit. I hope it’s useful.
I am up to my ears in baking. We are having a gigantic party this weekend. I’ll give the rundown next week. This is not the moment to bake–it’s the canicule–heat wave, and yes, related to canine, but it’s because of a constellation, Big Dog, whose brightest star, Sirius, rises and sets with the sun during the hottest part of the year). We have mostly been spared–highs around 34 Celsius, or 93 Fahrenheit, but that’s hot enough when you don’t have air conditioning.
Any driving tips to add? Questions? How are you dealing with the heat? Bon weekend!