How high is your higher? If 20kmph/30kmph it's not that much different, if a lot of you people is 60kmph over the speed limit and you expect everyone to follow, you guys should really consider slowing down as a whole. If you rear-ended people driving 120kmph, then i must say, skill issue, you're probably not driving as safe as you thought you are.
I’d love it if most folks didn’t go 10-15kmph faster (which seems to be the standard where I live) than the speed limit, but I have no way of changing their behavior on my own. Me going the speed limit on principle might just make it even more dangerous for me and the rest who are speeding. It might be marginal but it adds up over time.