TIL

"Arch Duke Maxyenko, Shit Talk Extraordinaire" (arch-duke-maxyenko) 12/26/2014 at 15:11 • Filed to: None

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That cops can give speeding tickets even though they're driving the other way. When did they get the technology to read oncoming traffic's speed?

*I didn't get the ticket, but my mom received a -$130 Christmas gift from the Ohio state highway patrol.

Brian Silvestro > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:18

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Wow the Ohio state highway patrol gave your mom $200??

Arch Duke Maxyenko, Shit Talk Extraordinaire > Brian Silvestro 12/26/2014 at 15:21

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No, they get $200

nFamousCJ - Keeper of Stringbean, Gengars and a Deezul > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:24

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did she get pulled over and given the ticket or did she get it in the mail? Seems like a lot for someone to do to u turn to go catch and ticket someone.

Sounds like she get ticketed by the mobile speed units. What city?

Tekamul > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:27

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LiDAR has always been able to do both ways.

Arch Duke Maxyenko, Shit Talk Extraordinaire > nFamousCJ - Keeper of Stringbean, Gengars and a Deezul 12/26/2014 at 15:28

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The cop turned around and pulled us over to write the ticket. He's a Ohio Highway Patrolman and the ticket is for Brown County.

Brian Silvestro > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:29

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dat ninja edit

Arch Duke Maxyenko, Shit Talk Extraordinaire > Tekamul 12/26/2014 at 15:30

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I've never seen it done from a moving car, though.

ddavidn > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:30

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Looooooong time ago. I got pulled over this morning, but just for a tail light and no ticket. Crisis averted.

Arch Duke Maxyenko, Shit Talk Extraordinaire > Brian Silvestro 12/26/2014 at 15:32

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Brian Silvestro > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:34

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Jordan and the Slowrunner, Boomer Intensifies > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:38

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Alabama State Trooper patrol cars also have a detector in the back window, or at least that's what I have been told by a state trooper. I would assume if Alabama has it, other states have it as well.

GeorgeyBoy > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 15:53

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I've got a few like that.

Tohru > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 16:00

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It can't.

Police in Motion: LiDAR cannot be operated from a moving police vehicle. The police officer must stop his vehicle to get a speed measurement.

Clown Shoe Pilot > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 16:01

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pretty sure that happened in the 80s. calibrated electronic speedometer + radar gun + toggle switch = they can get you coming or going

Xyl0c41n3 > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 16:03

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You didn't know that? Heck, a cop can even clock you if they're driving away from you on a perpendicular cross street. Most cruisers have detectors in the front and rear of the vehicle. It's kinda fun to watch/hear them (the lidar) get all loud when they've detected a speeder.

Tohru > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 16:04

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They can't, but many areas allow the officer to estimate your speed based on visual observation and his experience. Turns the court case into a literal "he said, she said" with the state on the side of the officer.

The last I knew, Wisconsin didn't allow this. There needs to be some hard proof that you were speeding - radar, LiDAR, timing the vehicle between two known points of reference, etc.

It's possible the officer timed her car using the road markings as a reference to determine speed.

nFamousCJ - Keeper of Stringbean, Gengars and a Deezul > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 16:05

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...wow. now I'm curious how he managed to clock her speed.

Arch Duke Maxyenko, Shit Talk Extraordinaire > nFamousCJ - Keeper of Stringbean, Gengars and a Deezul 12/26/2014 at 16:19

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I know, right?

Arch Duke Maxyenko, Shit Talk Extraordinaire > Clown Shoe Pilot 12/26/2014 at 16:21

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Even while they're driving in the opposite direction?

Clown Shoe Pilot > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 16:23

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you betcha. the toggle switch tells system if you're reading with or against traffic.

against traffic is radar reading - cop car speed

with traffic is radar reading + cop car speed

if the car is stationary, either setting will work. take the two numbers, do the arithmetic and put it on the 7 segment LED display. done and done.

gogmorgo - rowing gears in a Grand Cherokee > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 17:00

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Speed can be detected from a considerable distance in any direction, even from a moving vehicle. Many police forces have used airplanes to measure speed and issue tickets.

Something I've heard from the Wardens in the National Park I was working at the last few summers: It's usually not worth it to turn around and chase you down. The cop has to safely turn around (which usually involves coming to a very near complete stop) and then average significantly more than your average speed to catch up to you in a reasonable time. In traffic, it's simply not practical (or safe) to do more than radio a heads up to anyone who might be ahead of you.

My math as an example: If you're doing 70 mph, and it takes him 30 seconds to get pointed in the right direction, you're already a half-mile ahead of him, and it'll take him a minute and a half at 90 mph to catch up to you. If he can even go that fast, (traffic on a 60 mph road might prevent travelling at 50% over the limit) that's still a lot of time out of his sight and two miles of highway for you to turn off and disappear, for what's likely a fairly small ticket, but if traffic is light then it might be manageable. With traffic, likely it's wasted effort. On a divided highway where he needs to travel a half-mile in the opposite direction before turning around? Very little chance.

That doesn't mean he still won't try to come after you though, or won't radio ahead to have someone siting ready to pounce when you show up. On the empty rural roads out here, they usually turn around, or at least flash their headlights as a warning if you're just doing a bit over the limit.

Arch Duke Maxyenko, Shit Talk Extraordinaire > Tekamul 12/26/2014 at 17:31

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Oh, and it was Radar, not lidar

Arch Duke Maxyenko, Shit Talk Extraordinaire > gogmorgo - rowing gears in a Grand Cherokee 12/26/2014 at 17:34

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It was a divided highway, and yeah, he was booking it to catch up and didn't turn on his lights or siren until he got right behind. He was being a dick and I hope that he got coal for Christmas.

Arch Duke Maxyenko, Shit Talk Extraordinaire > Clown Shoe Pilot 12/26/2014 at 17:35

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I know how speed deltas work, I just didn't know that cops could do it.

Clown Shoe Pilot > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 17:50

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oh yeah, cops get ALL the toys. cop toys are a billions of dollars a year industry and this is ridiculously simple to do

pip bip - choose Corrour > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 18:59

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the technology has been around for quite some time!

Funktheduck > Arch Duke Maxyenko, Shit Talk Extraordinaire 12/26/2014 at 21:10

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I got stopped by GSP going the other way. Only got a written warning but he had my speed before and after he passed me. He said "Got ya goin 77 when I saw you comin. You slowed down to 69 when ya saw me and started speeding back up after I passed". He was about right too. I got lucky because GSP is known for being hard nosed on speeding.