Can 3 bikes get clocked by radar?

[scumdog]

If it's one cop on the side of the road waving out to 3 riders, how does the cop then prove in court that one particular rider failed to stop, especially if one or more riders does decide to stop?

And if the cop goes up behind a group of riders with their red and blue flashing lights, then technically only the rider at the back has to stop since the cop car isn't directly behind the first 2 riders. So pretty much as long as they don't get your tag, and you don't bin it, and your mates don't rat you out, and you go down a side road before the cop coming the other way manages to get you, then you're fine. I remember seeing a thread on here a couple of years ago regarding that sort of thing.

A shit load of 'if's there sonny - ya can't depend on ifs...

[Road kill]

Actually he does have to prove how fast you were going, as the court system is based on facts and not assumptions, which is what I told a nice officer who then decided not to give me a ticket but a good telling off instead.

I've had the same discussion with the same results.
Plucks you out of a long line of cars an then tries to convince you that you were speeding.
Watched him from 100 yards up the road over the next 10-15 minites while he tried the same thing on another two riders with seemingly the same results.
Never seemed to interested in the 200 cars that drove past,,all of them,,that like me,,,were speeding.

[Ender EnZed]

And if the cop goes up behind a group of riders with their red and blue flashing lights, then technically only the rider at the back has to stop since the cop car isn't directly behind the first 2 riders. So pretty much as long as they don't get your tag, and you don't bin it, and your mates don't rat you out, and you go down a side road before the cop coming the other way manages to get you, then you're fine. I remember seeing a thread on here a couple of years ago regarding that sort of thing.

This part is simple enough.

If it's one cop on the side of the road waving out to 3 riders, how does the cop then prove in court that one particular rider failed to stop, especially if one or more riders does decide to stop?

The problem here is that he won't be standing on the side of the road, he'll be standing in the middle. Getting past a cop that has to jump out of your way is a pretty clear cut runner, you can't really feign ingorance as to who he was or wasn't signalling to stop.

[Hans]

Having spent a year or few operating a radar or two, I could probably shine a bit of light on the inherent limitations of a ground based, stripped to the basics, doppler radar. The problem is that the list of limitations is so long that an afternoon's worth of lecturing wouldn't cover it. It comes down to the conditions for obtaining a valid result being so narrow, that it's almost impractical. If you have questions, ask away...

[avgas]

If it's one cop on the side of the road waving out to 3 riders, how does the cop then prove in court that one particular rider failed to stop, especially if one or more riders does decide to stop?

And if the cop goes up behind a group of riders with their red and blue flashing lights, then technically only the rider at the back has to stop since the cop car isn't directly behind the first 2 riders. So pretty much as long as they don't get your tag, and you don't bin it, and your mates don't rat you out, and you go down a side road before the cop coming the other way manages to get you, then you're fine. I remember seeing a thread on here a couple of years ago regarding that sort of thing.

Do not pass go, do not collect $200. Go directly to jail.

You have to follow this hand signal when they indicate it towards you. Regardless of how many there are of you. However that is all you legally required to do.

[Akzle]

Having spent a year or few operating a radar or two, I could probably shine a bit of light on the inherent limitations of a ground based, stripped to the basics, doppler radar. The problem is that the list of limitations is so long that an afternoon's worth of lecturing wouldn't cover it. It comes down to the conditions for obtaining a valid result being so narrow, that it's almost impractical. If you have questions, ask away...

was i wrong? (somewhere near page 1)

[rastuscat]

was i wrong? (somewhere near page 1)

Even if you're right you are still AZKLE, and your lack of credibility defeats your argument.

[Hans]

higihilly unlikerly.
radar "soaks" an area of the road, and when signal comes back faster than it should, goes beep. could be anyone "in the picture"

laser on the other hand, pings a point about the size of a 10c coin (targeted at a numberplate, ie) so while in theory it is possible to clock 3 speeding targets with a laser, would be a damn steady hand and good eye, but.

Close to accurate re the radar. Far from correct on the laser. Laser beams diverge with increasing distance, so while you may get a 10c coin sized beam at say ten meters, the painted area will be much larger at 200 meters. Not even talking about atmospheric conditions like haze and especially rain.

[Hans]

All I can say is, that in my opinion about half the cops I see around me aren't even capable of grasping the basic concepts you need to understand if you want to become a half decent radar operator (we're talking at least a year's worth of study here).

[FJRider]

Do not pass go, do not collect $200. Go directly to jail.

You have to follow this hand signal when they indicate it towards you. Regardless of how many there are of you. However that is all you legally required to do.

So ... he is NOT wanting to "High Five" us ... ???

[FJRider]

All I can say is, that in my opinion about half the cops I see around me aren't even capable of grasping the basic concepts you need to understand if you want to become a half decent radar operator (we're talking at least a year's worth of study here).

Thats why they have a quota system silly ... accurate readings aren't important ... money in the donut jar is what counts ...

[rastuscat]

All I can say is, that in my opinion about half the cops I see around me aren't even capable of grasping the basic concepts you need to understand if you want to become a half decent radar operator (we're talking at least a year's worth of study here).

Sad to have to agree, but you're right. The standard of instruction has decayed over the years. Sadly, new graduates get rushed through the absolute basics, then are expected to be experts.

Cosine angle effect would escape most these days, as would Doppler shift. Tracking history just doesn't get the attention it should.

Harrumph.

[FJRider]

Even if you're right you are still AZKLE, and your lack of credibility defeats your argument.

Carefull fella .. he might post another pic of a male displaying his genitals ... it seems to be his "thing" ...

[rastuscat]

Thats why they have a quota system silly ... accurate readings aren't important ... money in the donut jar is what counts ...

Repeat.

If there was a quota I could fill it everyday without even turning a radar or laser on. I reckon I could fill a quota with simple indicating tickets, stop sign tickets, lots that are less drama and are more lucrative than speed tickets.

Tell, me, how far can you ride without seeing and obscured number plate? Easy to prove, worth lots, but hardly ever written.

The donut jar doesn't get funded from fines. It's from

Still, never let the facts get in the way of a good grizzle. Come on FJR, you can do better than that.

[Hans]

Sad to have to agree, but you're right. The standard of instruction has decayed over the years. Sadly, new graduates get rushed through the absolute basics, then are expected to be experts.

Cosine angle effect would escape most these days, as would Doppler shift. Tracking history just doesn't get the attention it should.

Harrumph.

Thank you. Cosine is not much of an issue unless the radar is moving anyway, until then it helps the person being tracked. More like things that creep into badly surpressed side lobes etc... About the cosine: What you really need is a DGPS based system to tell the radar it's own speed. Then we'd be fucked. Until then it's fairly easy to explain to the judge, why the ticket shouldn't stand.