I've just returned from a 16 day/2500 miles trip through France, I didn't see any static speed cameras, but I did see 2 Gendarme speed traps, one of which was placed on the back of of flat back recovery truck, luckilly the locals were flashing all approaching traffic. Both the speed traps were on the major N routes. We planned our trip to mostly avoid autoroutes and the N roads, preferring to keep to as many D roads as possible, we saw 3 pairs of police/gendarme motorcyclists, and the occasional car or van in a village or small town. I certainly got the impression that France is very underpoliced, or is the UK overpoliced? Anyway some serious speeds were attained on our routes, it was an absolute pleasure to be on those traffic free roads. We did the Routes des Grandes Alpes from Menton to Lac Leman, superb, saw lots of old classic cars on the route, and mucho respect goes to the cyclists pounding away on those hills.