Police Radar display (for our friends on the force to answer)

[madboy]

Had occasion to follow a patrol car in the dark on the way home yesterday, and so could read the display on the radar. The red display said 92, the green display said 100 exactly (fluctuating a kay or two as it does). I sat behind with my speedo saying 102 give or take.

So - I presume one was the target vehicle, and the other was the vehicle the radar was mounted in, i.e. the cop.

Can one of our colleagues experienced in the use of such a device confirm for me which one was which? I'm thinking green was the patrol car as it seemed to more accurately track the acceleration and deceleration of the patrol car, but then that would make my speedo only 1 or 2% out, which I thought was a bit on the accurate side for a bike speedo!!

I didn't wheelie past him with my foot over the number plate, no pursuit entailed, no flashing lights or sirens, nor any hand gestures - nothing interesting at all!!! I'm only interested for the sake of speedo accuracy.

Thanks in advance.

[pyrocam]

Had occasion to follow a patrol car in the dark on the way home yesterday, and so could read the display on the radar. The red display said 92, the green display said 100 exactly (fluctuating a kay or two as it does). I sat behind with my speedo saying 102 give or take.

So - I presume one was the target vehicle, and the other was the vehicle the radar was mounted in, i.e. the cop.

Can one of our colleagues experienced in the use of such a device confirm for me which one was which? I'm thinking green was the patrol car as it seemed to more accurately track the acceleration and deceleration of the patrol car, but then that would make my speedo only 1 or 2% out, which I thought was a bit on the accurate side for a bike speedo!!

I didn't wheelie past him with my foot over the number plate, no pursuit entailed, no flashing lights or sirens, nor any hand gestures - nothing interesting at all!!! I'm only interested for the sake of speedo accuracy.

Thanks in advance.


interesting.
I would guess the red but cant say accurately.
Ive often wondered about how its callibrated (or uncalibrated)

and I saw you doing this and you did wheelie past the cop with your foot on the numberplate.

[placidfemme]

and I saw you doing this and you did wheelie past the cop with your foot on the numberplate.

yep I saw that too... also thought the hand gestures were a little OTT (PT)

[vifferman]

and I saw you doing this and you did wheelie past the cop with your foot on the numberplate.
...and the red number was the points out of 100. :yes:

[pyrocam]

...and the red number was the points out of 100. :yes:
red for style and green for execution

I reckon you did pretty well

[madboy]

Thanks SM. That would make my speedo 1-2% high, which means that when I hit 2## mumble mumble on the way to work this morning, I really was going that fast!! Cool :):):):)

Others - all very worthy suggestions that I will bear in mind for when I a) can actually wheelie, b) don't have a numberplate attached, and c) feel like a chase through rush hour traffic on the way home from work for no real reason other than to avoid a rego fine.

Or the fact that I arrived behind him decelerating from, umm... in excess of 100km/h. Coulda been nasty too, but the 2005 CBR600RR (oh what a pretty bike) that I met at the lights beforehand didn't seem too interested in pushing it so I buttoned off pretty early too (long before either of us spotted the patrol car).

[spudchucka]

They have one high fork and one low fork. You test the unit in stationary mode using one fork at a time and in mobile mode using both forks. They also have an internal test sequence and they get sent away every year for lab tests and calibrating.

Most readouts have the patrol speed on the right in green and the target speed in red on the left. When you lock a speed it is displayed in the centre so you can keep monitoring target speed on the LHS display and keep locking new readings if the target speed continues to increase.

[FEINT]

For those of you who don't know what is being discussed, here is a photo.

I was caught ealier this month, took out the camera and took some photos as a momento....

[spudchucka]

113, really, how could you? :wait:

[FEINT]

113, really, how could you? :wait:

I had a radar as well :( ..(IN CAGE) I slowed down as the cop was approaching. It was downhill. After the cop passed I released the brakes and the car rolled just over 110 km/hr, thats when he did the "U-TURN"..... and ... well you know what happens next.

Just a word of warning to those that don't know, cop cars have radars pointing REAR as well as forward.. :( ...... :( :(

[erik]

Thanks SM. That would make my speedo 1-2% high, which means that when I hit 2## mumble mumble on the way to work this morning, I really was going that fast!! Cool :):):):)


Not necessarily. I think it's possible for the accuracy of the speedo to vary over the range, most likely it's set to be most accurate in the middle of its range which could mean that low or high speeds have larger errors.

[BNZ]

I had a radar as well :( ..(IN CAGE) I slowed down as the cop was approaching. It was downhill. After the cop passed I released the brakes and the car rolled just over 110 km/hr, thats when he did the "U-TURN"..... and ... well you know what happens next.

Just a word of warning to those that don't know, cop cars have radars pointing REAR as well as forward.. :( ...... :( :(


Hahaha, should have bought a valentine1. Then you would have known he was still locked onto you from behind. :yes:

[sAsLEX]

In Australia they are very illegal, wont be long before they are banned here too.

yeah the stats monkey at LTSA or whoever makes the rule would have a hard one explaining why. Since radared drivers tend to be more aware and crash less.

[SuperDave]

Pretty good eye sight if you managed to make out those reading whilst following the cop car - they don't look all too large from FEINT's picture.

[BNZ]

That is why you got done for 113kmh.. he he. If you get pulled by a cop and you have a radar detector mounted you WILL get a ticket no matter how trivial, this is to make up for all the ones they have missed out on due to your detection device. Also a bit of a victory for them, overcoming your detector.
In Australia they are very illegal, wont be long before they are banned here too.

Mine has saved me countless times in the short period i have had it, but I always expect to be hard done by if I get pulled up. I do have quite a stealth install, and if I had my own car (not a company car) I would consider using the remote display and completely hiding the radar.

[gav]

I take it the car was stationery when you took the photo, so why does it show 89 in green?

[spudchucka]

I take it the car was stationery when you took the photo, so why does it show 89 in green?
Like SM said, it locks both target and patrol speeds.

[pritch]

Pretty good eye sight if you managed to make out those reading whilst following the cop car - they don't look all too large from FEINT's picture.

I was thinking something like that. Hey, I'd count myself lucky if I saw the cop before he saw me :-)

[BNZ]

Ohh I know, cause I tried to use their own pursuit policy against them and they didnt follow it (in the circumstances I created the pursuit shoulda been terminated) then they were not absoloutly truthful about it in court... but I'm not pissed at all. I got caught fair n square.

Haha, yeah I know a few cops who have gone on past the 160 pursuit killer. Nice try though

[myvice]

Cop driving along, spots a car coming the other way, does a U-turn behind it and pulls it over.
Guy gets out of the car, yelling and screaming, tears a little black box off his dashboard and throws it at the ground, then starts jumping up and down on it, still ranting and raving.
Cop waits for a bit, then gets out and wanders over to the driver...
"What seems to be the problem?" he asks.
"This f#@king thing cost me $800 bucks and it didn’t even beep once!" He yells.
Cop replies "I don’t have a radar gun in the car sir, here’s your ticket for failing to wear a seat-belt"

[scumdog]

Haha, yeah I know a few cops who have gone on past the 160 pursuit killer. Nice try though

Had a pissed ding-a-ling down here who crashed his car at high speed on a 85kph bend when he saw the cop car coming up behind him.

Went to court for the drink driving, judge asked him why he tried going around the bend at speed.

His answer? He had heard the cops call off the chase if you go faster than 160kph and he was trying to get over that speed so the cop chasing him would stop!!!!!!! :weird: :weird: :rofl:

[thehollowmen]

I remeber when they took me home, the one on the right was the one that was the police vehicle speed. We shot around doing 80-85 in a 50 zone, with hard braking and acceleration where the speed camera was.

That was lots of fun and I really wish it wasn't for such a bad reason.

[stanko]

I get a bit nervous when I dont have my radar detector ,even in the car. There are so many cops out there with radar you wouldnt belive it if you didnt have a detector.
My main problem is an operational one, when it goes off I tend to think "where is he" when I should be pulling on the anchors.
I have an escort 8500 and its pretty good, on the bike the YPVS makes it think there is a laser nearby, so I have to turn the laser detection off on the bike.
Radar detectors stop you getting pinged for lots of things other than speed, you get a headsup where they are and conform to mediocre rules.
Gives me the shits when a police car drives past and it doesnt go off, I suppose they arent all on Safari.

[Lou Girardin]

I get a bit nervous when I dont have my radar detector ,even in the car. There are so many cops out there with radar you wouldnt belive it if you didnt have a detector.
My main problem is an operational one, when it goes off I tend to think "where is he" when I should be pulling on the anchors.
I have an escort 8500 and its pretty good, on the bike the YPVS makes it think there is a laser nearby, so I have to turn the laser detection off on the bike.
Radar detectors stop you getting pinged for lots of things other than speed, you get a headsup where they are and conform to mediocre rules.
Gives me the shits when a police car drives past and it doesnt go off, I suppose they arent all on Safari.

What's YPVS and why does it transmit light?

[clint640]

Not necessarily. I think it's possible for the accuracy of the speedo to vary over the range, most likely it's set to be most accurate in the middle of its range which could mean that low or high speeds have larger errors.

You're dead right. I've compared the GPS to a few cage speedo's (on a closed private road under controlled conditions of course :whistle: ) - they are typically close at 100 ish but over read wildly at go-straight-to-jail speeds.

Cheers
Clint

[madboy]

Why do I have this indepth knowledge of the operating procedures of HP officers and still get done for some ridiculous speed???
Ohh I know, cause I tried to use their own pursuit policy against them and they didnt follow it (in the circumstances I created the pursuit shoulda been terminated) then they were not absoloutly truthful about it in court... but I'm not pissed at all. I got caught fair n square.Mate, don't want to turn this into a 5-0 bashing fest, but I've never met one yet who terminated it when it got too "dangerous". Only ones I know who've terminated it are when they've lost me - it seems getting on toward 3.5x the speed limit was quite okay so long as they could still see where i was going. But then, in fairness to those officers with common sense, most of the ones with common sense wouldn't take on a late model sportsbike anyway - not in the dry, car v bike.

Now back to the radar thingey... I thought only HP had rear facing antennae? Don't tell me the blimmin general duties and traffic fellas have it now too?! That's it, time to get the allen keys out and attack that piece of metal on the back of my bike...

[BNZ]

I have an escort 8500 and its pretty good, on the bike the YPVS makes it think there is a laser nearby, so I have to turn the laser detection off on the bike.


Laser falsing can often be caused by voltage fluctuations. You may need to install a voltage regulator of some sort to keep it within its opperational range.