How did he know ???? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

mexiken · 02-02-2013, 01:37 PM

So, it happened to me. Last night, I got pulled over coming out of the Antelope Valley. For speeding.

A song came on that had too much bass about 20 mins before, and I heard a few pops, so I turned off my music fearing I had blown my sub.

Well, 20 mins later I turned the music back on, and was adjusting the bass level slowly. Well, while doing this, I was going downhill, and didn't see a CHP officer halfway down the hill. I wasn't paying attention to my speed as I had let my foot off the gas and was coasting downhill, while I looked down momentarily at the head unit.

Got me going 87 he said. I didn't believe it. But again, I wasn't looking at my speed at the time, so I really don't know. It didn't feel like it. My question that I have for you guys is this:

I don't have my front license plates yet. It was 10:30 at night, he wasn't pacing me, so how did he precisely know how fast I was going ????

I'm not asking to get some help to fight it or anything, if I was going that fast, I was going that fast. I really wasn't paying attention to speed at the moment, I was talking to the passenger, joking about the sound system, and going downhill. I'm just curious: how did he know ????

(please forgive my ignorance when it comes to radar/LIDAR or whatever, I'm just hoping someone has some insight)

I live in California by the way. It was a CHP officer. Nice fellow.

06_warrior · 02-02-2013, 01:44 PM

He could of gotten you on Radar, Lazer etc. My last ticket was 78 in a 55 about 2 & 1/2 years ago. In Georgia anything over 75 on a 2 lane road is an automatic $200.00 Super Speeder ticket. Right after that i bought my Escort 9500ix radar detector. It's worth the investment to me. Already paid it's self off.

skibik · 02-02-2013, 01:45 PM

A patrol unit has a forward and rear facing radar detector. They can get you coming and going or whether you were coming up behind him. The radar uses your whole vehicle as an object, front license plate has nothing to do with it, that he bounces the signal off whether it is the old radar or the new laser that they use. You didn't say if you were running in the same direction or meeting him but that should answer you question either way. Here in MN the radar are mounted solid on the car so they have to be facing you or facing away from when parked, if he was parked sideways to you then he had a hand held unit. Hope this answers your question.

Dean.

My Caroline · 02-02-2013, 02:06 PM

All of the above is correct. Its called "Rolling Stalker Radar", and he doesn't even have to mess with it.

Laser requires something like a license plate, but your headlight will do the trick for them. There is no rolling laser, that is the gun they stand on the side of the road with.

NOW, ALWAYS ALWAYS ALWAYS ask to see the radar. It is perfectly acceptable to ask. If they say no, request the make and model number be written on the citation, and the last time the radar was calibrated.

These are some tools to use if you want to fight a ticket. An officer has no reason to deny you see the radar, UNLESS it is in heavy traffic, then it is a safty thing. Also, an uncalibrated radar can give bad reading.

Remember to always be polite, they are doing their job just as you are expected to do yours.

jd10013 · 02-02-2013, 03:22 PM

Quote:

Originally Posted by My Caroline

Laser requires something like a license plate, but your headlight will do the trick for them.
.

they just use the license plate as a point of reference for aiming. they could use anything they wanted.

VASCAR2 · 02-02-2013, 10:27 PM

If the patrol car was stationary he could have used, RADAR, LIDAR (Laser) or VASCAR. If the patrol car was moving then he either had moving RADAR, VASCAR or possibly paced you. Current LIDAR are stationary only. The Camaro does not give much sensation for your actual speed when driving. 85 to 90 in my Camaro feels about like 65 to 70 so I try to use my cruise as much as possible.

For Officers that Patrol every day it becomes very easy to pick out vehicles driving over the limit visually. The officer then uses his equipment to verify the speed (ie RADAR, LIDAR, VASCAR, or Stop Watch).

otter · 02-03-2013, 04:00 AM

The CHP usually use LIDAR.

The post before me is right on. If you work traffic every day, the speeders just jump out at you.

Early in my LEO career I worked alot of radar. This is how it was explained in Radar/ LIDAR school.

Traffic studies show 85% of vehicles travel the speed limit. So once you get a feel for the flow of traffic in an area, the speeders will stand out. We were taught to make a visual estimation of the vehicle's speed and then use the Radar to verify your estimate. If you do this daily, your visual estimates will be very accurate.

If the CHP was downhill from you he is most likely working an area where a lot of people speed and he probably got an accurate speed estimate.

I hope this helps.

C586 · 02-03-2013, 04:24 AM

You need to get veil and a valentine 1 and avoid these situations.

PhoenixZL1 · 02-03-2013, 07:13 AM

otter's post is dead on. Really him catching you going down hill is super easy for them to do and officers usually like to hang out on downhill's because they know the person is likely to coast or let the speed get up over the speed limit a bit. See it in Maryland on the down hill sides of the interstate from mountains the highway travels thru. Night time or not really doesn't matter because they have your headlights to see you coming.

mexiken · 02-03-2013, 12:24 PM

I don't remember if he was perpendicular to me or parallel to me, I believe parallel.

Since I wasn't paying much attention, I didn't really get a glance at him until just before I was passing him, and I saw him turn on the car right as soon as I did. I had a feeling he was gonna come get me =/

Thank you guys, for your posts. They were very informative, and now it makes sense. There's a lot of ill-informed people out there, so it's nice to hear from people who actually know what they're talking about/work in the field. Again, many thanks.

vroomapunk · 02-03-2013, 03:38 PM

I always wondered how they knew how fast you were going, using radar, when they were also moving. Wouldnt the laser come back as like 10mph since it is coming from a moving object? Then I guess they could add that to their speed to figure it out. Does the radar automatically know how fast the cop is moving and adds their speed in?

HDRDTD · 02-03-2013, 04:02 PM

Just yesterday I was watching Overhauling on TV. They were overhauling a car for a firefighter I believe, but they installed some type of radar detector that they claimed came with some type of warranry that said if you ever got a speeding ticket while using the radar detector, the manufacturer would pay for the ticket.

Any idea what which one it might be? I don't want one, I'm just curious.

jd10013 · 02-03-2013, 04:24 PM

Quote:

Originally Posted by vroomapunk

I always wondered how they knew how fast you were going, using radar, when they were also moving. Wouldnt the laser come back as like 10mph since it is coming from a moving object? Then I guess they could add that to their speed to figure it out. Does the radar automatically know how fast the cop is moving and adds their speed in?

no, cause light travels at something like 186,000 miles per second. compared to light the car is practically standing still. as for radar, it uses acoustics to determine speed, what's called the Doppler effect. the easiest way to explain that is how the pitch of say a train whistle changes as it gets closer or passes you. that change in the wavelength of the sound waves is measured to determine speed.

Quote:

Originally Posted by HDRDTD

Just yesterday I was watching Overhauling on TV. They were overhauling a car for a firefighter I believe, but they installed some type of radar detector that they claimed came with some type of warranry that said if you ever got a speeding ticket while using the radar detector, the manufacturer would pay for the ticket.

Any idea what which one it might be? I don't want one, I'm just curious.

there is no way to guarantee you wont get a ticket. the reason is the cops can leave the radar in stand by mode (it's not emitting a radar signal for a detector to detect) until he actually sees you at which point he pulls the trigger and records your speed. by the time your detector has warned you he's already has your speed. a radar detector will only save you if someone ahead of you has been lit up and your detector picks that up.

tonyko1 · 02-03-2013, 04:27 PM

As for radar/laser detectors, I read when it came out that laser travels at the speed of light or 186,000 mi. per second. So if they single you out and shoot the laser, by the time your detector tells you about it, they know your speed.

However, maybe if a cop is shooting laser up ahead at others before you get there, then the detector may be of value.

I do think it "unsporting" for cops sitting at the bottom of a hill, just ain't fair.

02-02-2013, 01:37 PM	#1
mexiken Drives: Sofia: 2012 Chevy Camaro 2SS LS3 Join Date: Feb 2012 Location: Los Angeles, CA Posts: 409 View My Garage	How did he know ???? So, it happened to me. Last night, I got pulled over coming out of the Antelope Valley. For speeding. A song came on that had too much bass about 20 mins before, and I heard a few pops, so I turned off my music fearing I had blown my sub. Well, 20 mins later I turned the music back on, and was adjusting the bass level slowly. Well, while doing this, I was going downhill, and didn't see a CHP officer halfway down the hill. I wasn't paying attention to my speed as I had let my foot off the gas and was coasting downhill, while I looked down momentarily at the head unit. Got me going 87 he said. I didn't believe it. But again, I wasn't looking at my speed at the time, so I really don't know. It didn't feel like it. My question that I have for you guys is this: I don't have my front license plates yet. It was 10:30 at night, he wasn't pacing me, so how did he precisely know how fast I was going ???? I'm not asking to get some help to fight it or anything, if I was going that fast, I was going that fast. I really wasn't paying attention to speed at the moment, I was talking to the passenger, joking about the sound system, and going downhill. I'm just curious: how did he know ???? (please forgive my ignorance when it comes to radar/LIDAR or whatever, I'm just hoping someone has some insight) I live in California by the way. It was a CHP officer. Nice fellow. __________________ Interior: 2-tone gray interior, Blue Dome and trunk lights, L.A. Dodgers floor mats (to come: footwell lighting) Exterior: Sunroof, custom painted gray stripes, vinyl Bowtie emblem decals, Holographic Transformer decals, white license plate LED lights Sounds: Stock highs, Alpine MRX-M100 amp mated to a 12" JL Audio W3 in a ****** Stealth enclosure Engine/Performance**: Hurst Short Throw Shifter, Rx Catch Can painted IBM, (to come: JacFab CAI, muffler delete/Flowmasters)

02-02-2013, 02:06 PM	#4
My Caroline Drives: Black 2011 Camaro LS Join Date: Feb 2011 Location: Texas Posts: 1,694	All of the above is correct. Its called "Rolling Stalker Radar", and he doesn't even have to mess with it. Laser requires something like a license plate, but your headlight will do the trick for them. There is no rolling laser, that is the gun they stand on the side of the road with. NOW, ALWAYS ALWAYS ALWAYS ask to see the radar. It is perfectly acceptable to ask. If they say no, request the make and model number be written on the citation, and the last time the radar was calibrated. These are some tools to use if you want to fight a ticket. An officer has no reason to deny you see the radar, UNLESS it is in heavy traffic, then it is a safty thing. Also, an uncalibrated radar can give bad reading. Remember to always be polite, they are doing their job just as you are expected to do yours. __________________ White Fender Hashes from Big Worm Graphix with Custom White Bowties GM Factory Remote Start and Factory Key Fob SS Fascia, Factory RS HIDs, Plasma P13W fog lights Non-RS to RS and fog light harness by Gen5DIY LED Interior, Trunk, and Licence Plate lights in white ZL1 Spoiler with Gen5DIY harness Factory NPP cat back Blacked out tail light bezels Factory 20 inch wheels wrapped in Nitto Motivos Lowered 1.25inch on Eibach Pro springs

02-03-2013, 04:00 AM	#7
otter Drives: Eastbound and Down Join Date: May 2012 Location: Nor Cal Posts: 555	The CHP usually use LIDAR. The post before me is right on. If you work traffic every day, the speeders just jump out at you. Early in my LEO career I worked alot of radar. This is how it was explained in Radar/ LIDAR school. Traffic studies show 85% of vehicles travel the speed limit. So once you get a feel for the flow of traffic in an area, the speeders will stand out. We were taught to make a visual estimation of the vehicle's speed and then use the Radar to verify your estimate. If you do this daily, your visual estimates will be very accurate. If the CHP was downhill from you he is most likely working an area where a lot of people speed and he probably got an accurate speed estimate. I hope this helps. __________________

02-03-2013, 12:24 PM	#10
mexiken Drives: Sofia: 2012 Chevy Camaro 2SS LS3 Join Date: Feb 2012 Location: Los Angeles, CA Posts: 409 View My Garage	I don't remember if he was perpendicular to me or parallel to me, I believe parallel. Since I wasn't paying much attention, I didn't really get a glance at him until just before I was passing him, and I saw him turn on the car right as soon as I did. I had a feeling he was gonna come get me =/ Thank you guys, for your posts. They were very informative, and now it makes sense. There's a lot of ill-informed people out there, so it's nice to hear from people who actually know what they're talking about/work in the field. Again, many thanks. __________________ Interior: 2-tone gray interior, Blue Dome and trunk lights, L.A. Dodgers floor mats (to come: footwell lighting) Exterior: Sunroof, custom painted gray stripes, vinyl Bowtie emblem decals, Holographic Transformer decals, white license plate LED lights Sounds: Stock highs, Alpine MRX-M100 amp mated to a 12" JL Audio W3 in a ****** Stealth enclosure Engine/Performance**: Hurst Short Throw Shifter, Rx Catch Can painted IBM, (to come: JacFab CAI, muffler delete/Flowmasters)

02-03-2013, 03:38 PM	#11
vroomapunk [COTW 5/12/14] Drives: 2012 CRT NF Cammed 2SS/RS For Sale Join Date: Oct 2011 Location: NOLA Posts: 6,115 View My Garage	I always wondered how they knew how fast you were going, using radar, when they were also moving. Wouldnt the laser come back as like 10mph since it is coming from a moving object? Then I guess they could add that to their speed to figure it out. Does the radar automatically know how fast the cop is moving and adds their speed in? __________________

02-02-2013, 01:44 PM	#2
06_warrior Drives: 2012 1SS LS3 M6 black on black :) Join Date: May 2012 Location: SD Posts: 1,342	He could of gotten you on Radar, Lazer etc. My last ticket was 78 in a 55 about 2 & 1/2 years ago. In Georgia anything over 75 on a 2 lane road is an automatic $200.00 Super Speeder ticket. Right after that i bought my Escort 9500ix radar detector. It's worth the investment to me. Already paid it's self off.

02-02-2013, 01:45 PM	#3
skibik Guest Drives: bbbbbb Join Date: Dec 2012 Location: bfe Posts: 713	A patrol unit has a forward and rear facing radar detector. They can get you coming and going or whether you were coming up behind him. The radar uses your whole vehicle as an object, front license plate has nothing to do with it, that he bounces the signal off whether it is the old radar or the new laser that they use. You didn't say if you were running in the same direction or meeting him but that should answer you question either way. Here in MN the radar are mounted solid on the car so they have to be facing you or facing away from when parked, if he was parked sideways to you then he had a hand held unit. Hope this answers your question. Dean.

02-02-2013, 10:27 PM	#6
VASCAR2 Drives: 94 Camaro, 10 1LT IBM Camaro Join Date: Aug 2009 Location: Illinos Posts: 232	If the patrol car was stationary he could have used, RADAR, LIDAR (Laser) or VASCAR. If the patrol car was moving then he either had moving RADAR, VASCAR or possibly paced you. Current LIDAR are stationary only. The Camaro does not give much sensation for your actual speed when driving. 85 to 90 in my Camaro feels about like 65 to 70 so I try to use my cruise as much as possible. For Officers that Patrol every day it becomes very easy to pick out vehicles driving over the limit visually. The officer then uses his equipment to verify the speed (ie RADAR, LIDAR, VASCAR, or Stop Watch).

02-03-2013, 04:24 AM	#8
C586 Account Suspended Drives: 2011 Camaro LS Join Date: Dec 2010 Location: NY Posts: 1,117	You need to get veil and a valentine 1 and avoid these situations.

02-03-2013, 07:13 AM	#9
PhoenixZL1 Banned Drives: 2010 Camaro 2SS/RS Join Date: Feb 2013 Location: MD Posts: 299	otter's post is dead on. Really him catching you going down hill is super easy for them to do and officers usually like to hang out on downhill's because they know the person is likely to coast or let the speed get up over the speed limit a bit. See it in Maryland on the down hill sides of the interstate from mountains the highway travels thru. Night time or not really doesn't matter because they have your headlights to see you coming.

02-03-2013, 04:02 PM	#12
HDRDTD Drives: 2013 Triple Black ZL1 Vert M6 ECF Join Date: Mar 2011 Location: Trenton, Michigan Posts: 7,047	Just yesterday I was watching Overhauling on TV. They were overhauling a car for a firefighter I believe, but they installed some type of radar detector that they claimed came with some type of warranry that said if you ever got a speeding ticket while using the radar detector, the manufacturer would pay for the ticket. Any idea what which one it might be? I don't want one, I'm just curious.

02-03-2013, 04:27 PM	#14
tonyko1 Banned Drives: 2012 Camaro 2SS/RS Convertible, IBM Join Date: Jun 2012 Location: Oregon Posts: 1,015	As for radar/laser detectors, I read when it came out that laser travels at the speed of light or 186,000 mi. per second. So if they single you out and shoot the laser, by the time your detector tells you about it, they know your speed. However, maybe if a cop is shooting laser up ahead at others before you get there, then the detector may be of value. I do think it "unsporting" for cops sitting at the bottom of a hill, just ain't fair.