Couple more things to note when driving in France.
When you overtake on an autoroute you are required by law to pull back into the inside lane. This is probably why the traffic flows better.
When you reach a village the speed limit is 30mph through the village. The village starts with a sign with the name of the village on and there are no speed signs. The village ends when the village name is crossed out with a red line, and again no speed signs.
The police often have radar guns on approach to toll booths where there are speed signs reducing to a quite low speed. They then pull you over after the booth.
In theory they can time you between toll booths and calculate your average speed, but I have not heard of anyone being done this way.
Some signs warning of a fixed speed camera have been removed, so you have to look out for them.
There are fixed cameras on some autoroutes as well.
Camera detection devices are banned so don't even have one in the car. Even if it is not being used the police will still fine on the spot.
I think the minimum tread depth on tyres is greater than our 1.6mm. They do not repair punctures if you get one and have no spare, you need to buy a new tyre.
Above all, have a great time
