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...or you could drive sensibly within the speed limit.
If anyone's still reading this: As I read this, I think it makes more sense for the police to replace radar with a high-resolution camera and a computer that can determine speed of vehicles.

Any thoughts on that?

Its like the dumbest product manager meme. “Humans use eyes for this right, why can’t our gadget?” “It must work at night? Oh we will just use a thermal camera” “Pixels in an image are not all from the same time instant? We will just pay 10x for a global shutter camera”

The list goes on and on and on. No, they will not just be replaced by whatever is producing loose AI facsimiles of the real world in a smartphone.

Average speed cameras exist and are basically that. ANPR at two locations and measure the time it took you to get between them. It's actually more fair because an occasional accidental overspeed won't get you but continuous speeding will.
Lotta miles using radar detectors -- they detect 3 different bands of radar and some "detect laser." Radar detectors are great insurance, and more useful on the open highway than they are in town, but I've not seen a vehicle give off Ka band emissions that wasn't law enforcement. I have noticed that newer Honda cars set off the K band, which is also used by a lot of the cheap lightpole "your speed" I've seen. Very rarely still I will see X band speed radar being used in the middle of nowhere where the cop cars are older.

Radar detector users just learn to ignore the X and K band alerts while simultanously learning a subconscious quarter second brake reaction time based on the Ka band noise.

Exactly. I haven't encountered a cop using X band since the 1990s. All X band signals I see now are door openers at grocery stores.

And yeah, a K band zap in the middle of nowhere usually means there's a Honda nearby.

Last time I had a detector (a remote Bel Pro RX75 Plus with laser jammer that works), I turned off X band because of incessant false positives. With just K and Ka (and laser), almost all detection were legit.

Radar detectors on the windshield look dumb, clutter the windshield, and encourage ticket-writing by offending some cops with fragile egos. Remote detectors or go home.

These detectors have been illegal in Australia for as long as I can remember. But with apps like Waze and TomTom Amigo, I probably don't need them. I can see where all the speed cameras are and police get reported on the map fairly quickly (I also contribute to these reports, let's subvert government power together)
good. speed kills. off highways, speeding is particularly dangerous for pedestrians, cyclists, and other drivers.
I don’t speed off highway. On highway though when traffic is light, visibility is good, I don’t see the big deal with going 70 in a 60. The detector gives me peace of mind so I can focus on what’s relevant rather than playing “find the cop” or, worse, going the speed limit and falling asleep. :)
Improper and reckless behavior kill, not speed per se. Going the speed limit around a blind curve without sufficient stopping distance or going faster than one's headlights are dangerous. There is no universal rule except don't drive faster or riskier than your or your vehicle's capabilities or endanger others.
Instead of radar, more and more places are installing ANPR (aka ALPR) cameras here. They measure how long it taked you to drive between two locations, if it's faster than the speed limit, the fine will find you. Tiny Belgium already has more than 5k ANPR cameras.

Predictably, the system is being (ab)used for all kinds of monitoring and tracking on top of speed enforcement. And in a certain sense, all those irresponsibly fast drivers with radar detectors are partially responsible for the further erosion of privacy on the road.

I remain amazed that Seattle doesn’t do this for the 99 tunnel that goes under the city. People routinely fly through there at like 40 miles over what the limit is - and due to a bus lane addition going northbound, they exit the tunnel at a high rate into some very varied traffic.

The tunnel is a toll road that’s photo enforced. Should be an easy ticket in the mail if your enter and exit time are way too close or something.

(I’m guessing it might be the age old “can’t prove it was you driving” defense?)

Because if they did it people would vote for it to be changed.
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in most of Europe these detectors are forbidden, I tend to drive within the speed limit, much safer
Over here in Finland I can't even remember the last time I saw actual policemen with radars monitoring traffic. It's all cameras these days, making detectors like this highly useless. They were a thing in the 90's or so.
All of that noise is K band and soon to be spread out across 77 ghz, outside of the bands being used by law enforcement (for now). If you take high velocity seriously, I recommend getting a Uniden R9 and a ALPriority Laser Jammer system. Then add in a dedicated android tablet running Highway Radar, you'll be a hard target to target. Also get a pair of binoculars (bonus points if they're thermal).

I haven't had a speeding ticket since 2018, before I had my tools. Just this week I was averaging 120 mph across Utah, turned my 11 hour trip into 8 hours.

Speed tickets are very unequally enforced. Last time I saw speeding enforcement plotted on a map, most states were broadly the same of hardly any enforcement. However, Ohio was the striking standout by iirc a full order of magnitude to the nearest peer.