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In the absence of a flair system on lemmy yet, let’s try to make it easier to scan through posts by type in here by using tags:
cross-posted from: https://lemmy.world/post/30492376
You mean that they use average speed cameras?
I mean that they'll take a pictures potentially miles apart and calculate speed by the time between them rather than just speed at time of capture via radar or induction loop.
Thanks to the Mean Value Theorem , one can conclude that there was at least one moment in between the two camera shots where the car's instantaneous speed was the same as its average speed.
Yes, the name of that concept is average speed camera
Oh lol wrong interpretation of average. Yes, that's what China uses. I know some western countries have implemented or considered them as well but for the most part at least in the US speed cameras are only at moment of capture (or slightly before if you want to be technical)
UK uses them a lot,especially around road works to enforce the reduced limit.