In the sprawling megalopolis that is São Paulo and the surrounding region they are one of the best revenue generators that there is, so good in fact that our wonderful

governor recently bought another 5 millions worth under his Covid protection measures
Ours are still the simple point speed type, nothing like the average speed systems you have in the UK, so a lot of folks scream around town well above the limit and then slam on the anchors when Waze tells them there is a camera nearby.

That works about as well as you might expect.......
They recently put one in the exit of a tunnel, which was promptly blocked by a multiple rear end collision
A lot of them don't pick up bikes either, so our beloved motoboys don't even slow down for the cameras (or red lights, pedestrian crossings, pavements, etc

)
Being a sensible mature adult and responsible biker I have found that our cameras have the greatest difficulty identifying a number plate if you go past on the back wheel............
TTFN
In ancient times cats were worshipped as gods; they have not forgotten this. – Terry Pratchett