I done a bit of motocross back in the day, and that sport has been devastated by this issue – tracks, even long-standing, well established tracks, have been shut down all over the shop. The pity of it is, they don’t normally get massive amounts of use (I’m hazy on this but think there’s a 12 day annual limit on using the land for that kind of thing, I dunno, without planning permission or something).
In all fairness, the sport didn’t help itself because there was a big push towards four strokes mebbe ten or twelve years ago, and the noise from them things travels further – especially the earlier ones that weren’t as well silenced, and before noise was so clearly such an issue.
Also have a very shady recollection of a race track (Cadwell springs to mind) that faced closure or restriction based on noise complaints from a family (or relative of a family) that moved to the area because one of them WORKED at the circuit. Crazy.