We have speed controlled zones in the US as well and I don't see how that makes a difference. It's a speed limit, not a speed requirement. Unless you're ridin

We have speed controlled zones in the US as well and I don't see how that makes a difference. It's a speed limit, not a speed requirement. Unless you're riding the speed limit and leaving yourself no margin for error then you should be actively monitoring your speedometer with sub-minute frequency and having to glance to your side instead of down isn't going to impact you much if at all. My point is that where I'm from I typically don't get to decide my speed because it's dictated by externalities like traffic or road conditions. I also have a pretty good idea of the speed I'm travel and when moving through speed control zones I know if I need to slow down without watching my speedometer like a hawk.