You can see that thing from miles away, if someone doesn't slow down before an obvious obstacle that Person shouldn't be on the road. there was one accident at that Roundabout in the 11 1/2 Years we lived here, and that wasn't because someone was going to fast. About that slowing down stuff, this also happens around here, but as far as i know it happens a lot less than in the USA, on Mountain Passes with sharp corners the speed Limit is 50 all the way when there is one lane for each side of the Road. (edited)