Radar, rapid decel, non lock, what do they see? - K-Bikes.com - Excellence in Motion
 
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post #1 of 6 (permalink) Old Jan 12th, 2009, 5:01 pm Thread Starter
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Radar, rapid decel, non lock, what do they see?

Does anyone know what a LEO might see as a readout on their radar equipment as they pop a motorist (or motorcyclist) who immediately begins decelerating very rapidly? Letís assume the motorist begins decelerating quickly and hard enough that the LEO is unable to obtain a radar lock. Does anyone know what is typically displayed during the rapid decal, non-lock period of time?

No reason, I'm just asking.....
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post #2 of 6 (permalink) Old Jan 12th, 2009, 7:29 pm
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I believe the conventional radar guns will display the fastest speed of the fastest moving vehicle, so by the time you are slowing down, the readout won't change from the peak speed detected. This is also how they can clock you even when you are embedded in slower moving traffic. It is up to the LEO to determine visually who the speed belongs to, which is ripe for defense, so usually they won't nail you if you are in lots of traffic. "Locking" on depends successful round trip of radar signal, which factors in line of sight, frontal area, weather, etc. So, a motorcycle is an advantage having a smaller frontal area. I'm not certain, but I believe the gun says NR if it doesn't register a speed. Now, you could slow down before they even hit the radar if it's instant on, as was the case on my way to WV last fall. LEO said, I got you doing 56 in a 35, and your headlight dove long before I turned on the radar, so slow it down! He let me off because it was colder than a witches tit that day, I was wearing ATG, he was a nice guy, or all of the above.

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Last edited by Hermes; Jan 12th, 2009 at 8:32 pm.
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post #3 of 6 (permalink) Old Jan 12th, 2009, 11:09 pm
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i assume it depends on the equipment. here police is using k band and their equipment is supposed to measure a relativelly steady speed, if vehicle is braking hard their radar cannot measure.


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post #4 of 6 (permalink) Old Jan 13th, 2009, 7:27 am
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Quote:
Originally Posted by Doru-in-Romania
i assume it depends on the equipment. here police is using k band and their equipment is supposed to measure a relatively steady speed, if vehicle is braking hard their radar cannot measure.
I believe they can get a reading even if you are braking. If the gun is on, it's showing a speed. You can verify this by using a radar detector like an Escort, Bel, or Valentine 1. You can watch the signal strength as well as the duration on their displays. Most of the speeds signs in CA run on K-band and they display your speed even as you decelerate.

My Escorts (I have 4) have saved me numerous times in terms of "Situational awareness." The Escort 9500ix, with its internal GPS that includes red-light and speed cameras in its monthly updated database, is one cool beast! Too bad some countries like Ireland ban them in favor of revenue (they had 20 cameras in 2005 and now close to 500). I met a gent from Ireland in Bodfish, CA (look it up) who had the Kiss of Blarney. He had come to America to "Escape their governmental lunacy."

I was reading about some camera in England that generates 500 citations a day. Only problem is people brake hard when they see it, or momentarily forget it is there, and they have numerous wrecks in the area. The cop in charge claims "It's effective for speed control" - just that the subsequent accidents don't matter.

As my physic's instructor used to say: "Speed doesn't kill. It's the stop that does it."


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post #5 of 6 (permalink) Old Jan 18th, 2009, 8:05 am
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The last I remember is if your speed was changing continually by 3ft/sec/sec or greater the radar could not lock on. Now it is easier to do this braking than accelerating. Just remember that if you are the only one on the road and make that kind of deceleration, the cop will see you braking that hard and stop you anyways and still write you a citation based on his trained eye and experience. You still lose. The trick I use is to just close my eyes until the cop disappears.
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post #6 of 6 (permalink) Old Jan 18th, 2009, 10:57 am
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Quote:
Originally Posted by Wildbeast
The last I remember is if your speed was changing continually by 3ft/sec/sec or greater the radar could not lock on. Now it is easier to do this braking than accelerating. Just remember that if you are the only one on the road and make that kind of deceleration, the cop will see you braking that hard and stop you anyways and still write you a citation based on his trained eye and experience. You still lose. The trick I use is to just close my eyes until the cop disappears.
this is what i was saying, radar cannot lock while braking. here leo cannot write a speed ticket without photo evidence. radar gun does not exist, they have the radar installed on the car and works with video camera.


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