Unmarked… but not necessarily unnoticed… since there have been articles which go into detail about how we can recognise these “incognito” cars 
On this subject - do be careful, there are a lot around!
If you happen to see ahead two cars on maybe an otherwise empty road crawling along at 78kph, with the second car making no attempt to overtake, look through this car to the one in front and if you can see a black square on the rear windscreen - about the size of a small book - then it is a radar car that will have you on the overtake.
This is the easy scenario though. Worse is when you come up behind a camping car doing the obligatory 70kph, do you take the risk that it is their mindset speed or is it behind a radar car? If you take the risk and it turns out to be a radar car, then too late as it will have you on the overtake (assuming the overtake speed to be more than the limit…)
In the real world not this lazy money raising one, police would often ignore an overtake over speed limit if it wasnt a sustained speed. One snap shot is not the whole story.
I’m not sure speeding is seen the same way in France, where the object seems to be to catch and punish anyone who breaks the speed limit rather than encouraging people to drive safely.
No french minister is ever going to say the reason there are so many accidents and deaths is because the french are terrible drivers but thats the truth. They should start by not ramming other cars when trying to park.
We have personal experience of poor driving by other nationalities, so please stop lumping all bad drivers under “the french” 
cheers
Yes of course Stella but very recently we had the stats on here so was basing my comment around that and the 2 impacts to my bumpers whilst in France on the last 2 trips.
I think the clue is in the name…
Indeed. Around my corner of 86 the driving is generally pretty good. On the Autoroutes, I spot bad driving (especially speeding and absence of lane discipline) mainly by Dutch and British registered vehicles.
You have been living there too long, you gone all french 
Must confess we’ve noticed that “some” Dutch drivers think they’re on a racetrack… but we also have Dutch friends who are careful drivers… 
Let the accident stats do the talking 
Rather that than stay all English
I have fitted really course grip tape to the bumper corners so it makes more of a mess of the offending cars body, but I’m not bitter 
Of course, Accident Stats can’t give a round picture of bad/dangerous driving…
When a boot-hugging maniac gives us a nasty turn as they finally dash past into the ether… we often mutter… “there’s an accident going somewhere to happen”
and we simply hope that said driver goes a long way away before finally “happening”. of course, we hope there will be no accident… but with some of the crazy drivers we encounter, who knows.
You seem rather bitter
And twisted, dont leave out the twisted
Around here (12) it’s usually les belges…
I find it illogical that persons think driving skills are defined by nationality.
They are defined by training, ability and attitude.