...from all directions.
It's not bad enough that we drivers have to waste precious brain synapses scanning the sides of the road in two dimensions, watching for police officers skulking behind road signs, hedges, bridge abutments, on their unending quest to enforce an unenforceable speed limit.
But now we have to pay attention in three dimensions, because cops are standing on bridge overpasses with their radar guns.
Like we don't have enough else to do?
I don't know if this tactic is all that new, but I've only seen it recently myself, and some readers have observed it too.
As I've said a million times, the entire exercise is futile, because 100-plus years of speed limit enforcement has obviously not had any effect; otherwise, they wouldn't have to keep on trying.
The exercise is also pointless, because speed simply is not the issue in traffic safety. Seat belts, impaired driving, and lousy driving skills are the issues.
Any police resources we devote to anything else are completely wasted.
Why are they still doing it?
You'll have to ask them.