If someone’s speeding in the first place, I’ve never understood how it can be a “trap.”
When teh speed limit on a road changes several times in the space of a few miles for no apparent reason, it’s not for safety, it’s “revenue enhancement”.
Example: A commuter artery near me has just been re-jigged (to put in bicycle lanes), with traffic islands (for hiding cop cars) in the middle of the road, wide sidewalks, etc. The toward town speed limit on this road starts off at 30 mph, drops to 25, then there is a ONE BLOCK section of 30 mph, immediately after which it drops to 20 mph. Then it returns to 30 mph. The other direction limits are NOT the mirror image, there is one less speed change heading out of town.
This is in 3 miles. Oh, and even after the re-jigging and 40 MILLION dollars in improvements, some of the speed limit signs are somewhat obscured. But they’re not speed traps, right?