Black Cat II RADAR Recorder in Milford, CT (1 Viewer)

WJS

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I kept driving by a new K-band source in this residential neighborhood. It took me a few drive-bys to locate the source; I had never seen these before. I like how the sticker is removed to keep it low-profile. The day after I took this photo the unit was removed.

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Link to the Black Cat II RADAR Recorder for those not in the know. Is this a precursor to speed limit enforcement? The local PD had the speed trailer in the area a few weeks prior. Maybe they're validating its effectiveness.
 

AJinNJ

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Very interesting. I don't think it can be used like a speed cam though...I doubt it can record a specific vehicle and attribute the measured speed. More likely they are measuring how much traffic is going through this side street?

Cool find in any case!
 

Vortex

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Ah interesting, thanks for the heads up! It's cool learning about new radar systems like this. :) This one is super low key just mounted in a pelican case and strapped to a pole like this. Without a radar detector, you wouldn't know what's inside.
 

InsipidMonkey

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These are just used for traffic studies (eg vehicle counts, direction, average speed, vehicle length), to make sure the roadway is properly designed for the traffic it handles.
 

meismyname

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I saw something like this installed on a pole near my house. Took me a while to realize it was the source of my k-band false. It's a 25mph road where everybody goes 30-35. There isn't much shoulder, so there really isn't anywhere for enforcement. Every once in a while I've seen a motorcycle cop there, but the motorcycle has a 33.8 KA radar, whereas everything else in my city is k-band.
 

WJS

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I think it was used in this location to determine if the speed trailer that’s was recently parked nearby (since removed) had any effect.

I’d be curious to examining the data but people will always resume driving at what feels comfortable in a given situation which is rarely at or under the speed limit.
 

meismyname

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I think it was used in this location to determine if the speed trailer that’s was recently parked nearby (since removed) had any effect.

I’d be curious to examining the data but people will always resume driving at what feels comfortable in a given situation which is rarely at or under the speed limit.
Now that you mention it, that was the same case here. A speed sign appeared a couple weeks after this appeared. Unsurprisingly, the speed sign really didn't do anything to slow down traffic from what I saw.
 

WJS

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Now that you mention it, that was the same case here. A speed sign appeared a couple weeks after this appeared. Unsurprisingly, the speed sign really didn't do anything to slow down traffic from what I saw.
Maybe it’s their way of showing due diligence in the fight to reduce speeding. When the mayor asks, they’ll have the numbers.
 

RedRocket

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Most State/City highway Dept's are required to do 80 'percentile' speed surveys every few years so the roads can be properly PSL zoned as to the speed traveled by the majority of Drivers there.
 

meismyname

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Most State/City highway Dept's are required to do 80 'percentile' speed surveys every few years so the roads can be properly PSL zoned as to the speed traveled by the majority of Drivers there.
If I knew for sure that's why it was there, I'd be trying to punch it a little to bump up the average lol.
 

sdrawkcaB

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If I knew for sure that's why it was there, I'd be trying to punch it a little to bump up the average lol.
I would too haha. But, you'd have to drive by many, many more times at or equal to the new speed you'd want. Assuming an 85th percentile... Percentiles are calculated by the number of samples laid out in an array from lowest speed, to highest speed, then remove the top 15% of samples from the highest speed end of the data array. The new speed limit would then be set at the remaining top number.

For the sake of simplicity, say you had 100 samples of vehicle speed. You'd take your sample data and put it into an array, ordered from slowest to fastest. Then you'd count 85 positions in from the slowest side, keep those samples, and drop the top 15 speeds measured. Of the remaining samples, the highest speed measured now left behind (at the 85th position) would become the new speed limit.

You'd need to get multiple people to assist you in order to impact the data. Isn't there an app in the App Store called TaskRabbit where you can hire people to do random things for $5? LOL. "Your job is to drive up and down this road 10 times in each direction at 50mph. Upon completion and sending in a screenshot of your route history, you will be paid $5. There is no limit to the number of times you may repeat this task for the reward." I would love to do that. Game the system.
 

DocH

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Most State/City highway Dept's are required to do 80 'percentile' speed surveys every few years so the roads can be properly PSL zoned as to the speed traveled by the majority of Drivers there.
I can think of MANY roads where setting the PSL at 80% of the actual vehicle speeds would be such a great idea.....too bad it is not done more (adjusting the actual PSL to match the avg. speed)
 

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