mrsteve

iTrader: (1)

Anyone having problems with laser falses? Specifically those caused by newly introduced "laser guided" crusise control. I've had an Infiniti FX 45, Caddilac, and a Lexus set off the V1's laser alert when they are in the on-coming lanes.

Anyone else have this problem?

Amoeba

No I havent been getting that, but exiting many of the florida turnpike toolbooths I get a V1 Laser Alert.

NiteQwill

Yes, I've had the same problem. Also, complete LED tails (G35) set off my V1 when I'm behind them at the stoplight.

mrsteve

iTrader: (1)

I haven't had the G35 problem. I was behind one today without an alert.

EricL

Hmmm...

I did get a couple of laser falses on my V1 (lately) that I couldn't account for by: lighting, sun glints, pulsed taillights (led, etc).

I did notice a FX-45 in one of the "encounters." So, add a possible from me...


And, I Googled this tidbit:

LINK: http://www.epinions.com/content_138553691780

Neech

I guess this might be bullshit

http://www.acura-cl.com/forums/showt...ht=intelligent

EricL

Perhaps it is...

Here's another bit of Googled flotsam:

LINK: http://www.globeandmail.com/globemeg...227/blurs.html

Neech

I had 2 different FX set off my V1 laser from behind as they passed.

mrsteve

iTrader: (1)

Happens more and more frequently to me now that the FX is becoming more popular around here.

Kalin

I've always had issues with LED brake lights on SUV's... even had a take-n-bake pizza place set it off. Go figure.

2Sxy4YoMama

Trailblazers especially.

blader

Wow now that you mention it ..

I was on the parkway on my way to work the other day and I kept getting TONS of laser falses. I found this very weird because New Jersey doesnt even use laser. Usually red neon signs, trailblazer lights, some LED tails and some road hazard signs set it off and I know about these but I could not for the LIFE of me figure out what was making it go CRAZY

I did notice an FX behind me but didnt think anything of it. that explains everything

edgalang

Don't forget digital cameras on the list. A Nikon Coolpix digital camera can set off the laser detector just as well as LED brake lights.

mrsteve

iTrader: (1)

New red light cameras in my area are using laser. Sitting at a red light with one of those infront of you gives off a laser alert until the light turns green

Shawn S

When I was driving back from Virginia recently, there was a Black FX45 that was using me as a “RADAR rabbit” and he kept setting off my V1’s rear Laser alarm.
I slowed down, he slowed down.
I sped up, he sped up.
After a few miles it was really starting to piss me off so I dropped it from 6th to 4th and did a nice little 70-110MPH blast in an attempt to lose him.
His big V8 didn’t let that happen and he quickly reeled me in.

I finally got my break when we came up on a toll section on Rt 1 in Delaware.
I cruised on through with my EZ-Pass, but he had to stop and get a paper-ticket.
As soon as I saw him veer off for the toll booth I floored it again and put some distance in-between us and I never saw him again.

Shawn S

blader

those FX's are pretty quick. I think some versions of them have like 345hp dont they?

Shawn S

315 I believe.

Neech

My next question (and I think I know the answer) is if you drive an FX, does this system false the detector within the car?

Shit, didn't Nissan think of this? what assholes.

Shawn S

I doubt it because all the signals are originating from the front of your car.
I guess it depends on where the emitters are located.

Another question I have is what are all these stray signals doing the police units?
If they’re running a Laser speed trap and there are all these stray light signals bouncing around, couldn’t it produce errors in the clocked speed?

Neech

I'm sure it could affect it but the timing would have to be right. I'm not sure how often and how strong the laser is from the FX.

Back to it setting off the detector from within the FX; I think it would set it off. Those signal are being reflected back to the FX meaning the detector would also pick them up. It's not where the emitters are that's important but the reflection back.

mrsteve

iTrader: (1)

Quarter mile in 15.0. I was at the track and 3 of them were there

mrsteve

iTrader: (1)

Good point it might reflect back.

The laser signal is intermittant. On for about a second, off for two seconds, on for a second. Even when they aren't in cruise control, the laser is still on.

blader

thats faster than I ran stock

mrsteve

iTrader: (1)

^ They were smoking modded RSX-Ss.

V8 torque braking at the line > Trying to launch shift the RSX 6pd

fast_daddy_car

I just traded in my CLS for a FX35.
The rear led tail lights do set off the V1 lazer alert when I held it at the back.
It is also set off by the adaptive cruise control. However, even with the cruise control off, the sensor still fires IR signals, this is because if it senses you are closing in on the car ahead of you too quick, it will pre-charge the braking system so you get maximum pressure just in case.
It is this steady pulsing that also sets off my V1 when its inside my Fx35 on the windshield. If I get close to the car in front of me, my V1 Lazer alert keeps going off. so its also annoying the FX drivers!!

Looks like I will need to turn off my lazer band on my V1.


From what I read about lazer, its tought to get advance warning anyway.

mrsteve

iTrader: (1)

Ouch that sucks... Nissan should have anticipated that problem....

EL_CLS

Warning: Terminology police note ahead:

LASER: (Light Amplification by Stimulated Emission of Radiation). :cop:

RE: the advance warning.... It depends... In my area, there are a number of situations that have saved me $$$ from revenue enforcement activities in my area (3- to 5-MPH is a 35 zone type of action). There have been a few cases where the beam scatter was enough to give me enough warning to drop the car below the posted speed limit.

If your hauling ass and all alone, you are probably going to be cooked if you don't have a laser jammer or brigade of angels watching over you...

fast_daddy_car

According to other info I read, the pulse is not the same frequency as the police laser. Which would make sense as it would almost be a factory installed jammer.

I bet the V1 has a wide tolerance for setting off the laser alert. Maybe this is how they acheived the far range they can claim?

Well, now going down the highway I can keep pinging my adaptive cruise control, setting off the car in front of me laser alert, so he changes lanes and gets out of my way

EL_CLS

There is nothing in any laws that I've read that specifically detail or document what pulse width (min/max), frequency (min/max), and other constraints that would preclude various manufacturers from making their own units.

Add in the problem of aliasing and time-to-frequency and frequency-to-time domain issues, and you are simply waiting for more problems to show up in the future. As long as there isn't a rather specific set of criteria on all of the modulation, IR light band, modulation properties, you will find that there are going to be ongoing problems with detectors and LIDAR guns.

The V1 seems to be trying to accept a very broad range of pulse patterns and as time goes on, they will probably add some additional signal processing to help clean up the falses. However, in like manner, the police would be free to use LIDAR guns that interfere with navigation systems -- and in fact mimic their operation in one or more modes.

The V1 also gets a longer range by NOT discriminating to carefully at certain pulse patterns as multiple beams that can be bounced off moving targets and then received with their own “gating” (if a reflection comes off a moving car, the signal would appear to be "gated" and would show up as a short burst in addition to the original signal from the gun) and can make for an even more confused input source.

And, you really want to get any reflections you can to help you hit the brakes before it’s is just PLAIN TOO LATE.

Perhaps V1 will add a series of advanced "logic" modes to laser operation as well.

NiteQwill

laser is not government regulated by the fcc like radio or radar, so very lax regulations exists because of hundreds or thousaands of lasers used in the medical field. this lax transfers to the auto industry too.

Neech

One thing I did notice when an FX was oncoming, it set off the V1 but did not set off the Bel 905 laser jammer I have installed. So either the signal is not strong enough to set off the jammer or on a slightly different wavelength than the true police laser but close enough where the V1 thinks it's a threat.

The jammer needs close to a direct hit tho (laser shot from a gun) to jam so the FX wouldn't set it off as far as that goes.

fast_daddy_car

so do I disable the laser in my V1, or switch over to an Escort??

Too bad you can't reduce the sensitivity of the laser band, like you can for the Ka band.

blader

^^why would Escort be better? other than maybe being less sensitive, I can't see why it would be the better alternative if it has a laser detector too .. it will detect it just like the V1 will.

I'm still not giving up my V1

edgalang

Because it has better filters...BTW...I have both.

fast_daddy_car

Just read some more laser info at valentineone.com. I will try mounting the V1 behind the tint band on top of the windshield. Its actually recommended to reduce interferance from the sun bouncing off the hood.
I may also try behind the dots near the rear view mirror.

Neech

Doing so might also reduce your radar sensitivity as well. Beware.

pianoman41

True, they are not regulated by the FCC, but they *are* regulated by the FDA (yes, the Food & Drug Administration), and the regulations are *not* lax and have been in place since 1976. The FDA classifies lasers according to public safety and potential danger to organic material. Although only those lasers with more than 5 mW of power need to be classified, almost all manufacturers today submit to FDA approval for marketing purposes.

mrsteve

iTrader: (1)

^ teh pianoman is correct... the FDA regulates laser detectors.