In our region there are some speed limits on "teenager race tracks" or "applause turns" for motorcyclists. Those spots are easily mastered by average drivers at the general speed limit but cars and motorcycles keep running off the road despite decreasing speed limits. I know a specific turn where the limit went from 100km/h to 30km/h over the past few years. Fatal crashes still happen in that spot. I still think that exceeding the speed limit is not a good idea.