The ones at crossings are for speed and red lights, but we've also got:
> speed camera's on straight roads, without crossings and/or other hazards (our version of the middle of nowhere...)
> average speed camera systems (take a photo at the beginning, note time, take photo at end, take time and calculate average speed = bingo!)
> mobile speed camera's (cop in a van, camera besides the road and mostly hidden from view... all in the name of safety and the government's budget, actually, scratch that safety bit)
> undercover cop cars and motorcycles (bikes are BMWs, cars can be anything; VW Golfs (R32 without the visual clues), SEAT Leon, Volvo V50, all looking bland but packing powerfull engines)
Oh... and the fines have risen quite a bit, foreigners caught by patrols need to pay right away, camera fines are sent to the owners adress (even in other countries). So yes, welcome to our country and drive safe
BTW: middle-of-nowhere? lol, we're in the friggin' middle of everything. We're not a densely populated country, we're a mildly populated city...