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|  | Home > Technical > Does adaptive cruise control block speed lasers? | 
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| myfirstrrs Member Since: 20 Jan 2014 Location: Lancashire Posts: 433    | wilpert, this sounds like a fantasy to me but I would love to hear that I am wrong. | ||
|  Fri Jun 27 2014 11:25am | 
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| wilpert Member Since: 25 Jun 2014 Location: London Village Posts: 169      | I read it somewhere but id already eaten some mushrooms from the forest - at least I think they were mushrooms, tasted OK to me   | ||
|  Fri Jun 27 2014 11:36am | 
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| jim4244 Member Since: 16 Feb 2012 Location: No Posts: 1210      | Funny you should ask that question!
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|  Fri Jun 27 2014 11:50am | 
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| wilpert Member Since: 25 Jun 2014 Location: London Village Posts: 169      | Im sporting said hat now.
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|  Fri Jun 27 2014 11:57am | 
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| wilpert Member Since: 25 Jun 2014 Location: London Village Posts: 169      | and another thing, did ACC come as standard on the rrs 57 plate, anybody know this? | ||
|  Fri Jun 27 2014 11:57am | 
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| Terryrrs Member Since: 25 Dec 2013 Location: Suffolk Posts: 158    | I have read that the garage door openers will jam radar guns and no mushrooms magic,or not,have passed my lips.  | ||
|  Fri Jun 27 2014 12:24pm | 
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| Bradders Member Since: 08 Oct 2009 Location: Leeds Posts: 2515    | No I don't believe that it does that.  Aren't laser jammers illegal ? FF 4.4 V8 Soooo looking forward to this bad boy
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|  Fri Jun 27 2014 12:26pm | 
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| BKHK Member Since: 05 May 2008 Location: Perth Posts: 1942      | It is possible to jam the radar gun signal, but it depends on the type and frequency. Over here, one can buy a system which will render the vehicle "invisible" to radar guns and camera sensor beams. A friend of mine has them in his M3, he speeds constantly and has never had a ticket. I believe that they are based on parking sensors from a Nissan Patrol? www.radars.com.au Gone - 2008 Stornoway Grey RRS 2.7 TDV6
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|  Fri Jun 27 2014 1:00pm | 
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| Terryrrs Member Since: 25 Dec 2013 Location: Suffolk Posts: 158    | Here is one Range Rover owner who fell foul of the law.
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|  Fri Jun 27 2014 2:17pm | 
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| Stuart Member Since: 17 Oct 2013 Location: Manchester Posts: 581      | I was reading up on this recently Terry, it seems systems are now out there that don't throw the error up on the speed gun. I also read about the garage door opener system but couldn't find much comprehensive info on it. 
 
 Wilpert, now that was funny.   | ||
|  Fri Jun 27 2014 5:59pm | 
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| Moog2014 Member Since: 13 Jan 2014 Location: East mids Posts: 12      | 
 
 If the device sensing the distance is a laser, and it's the same wave length as the speed guns, then yes it could be possible. | ||
|  Fri Jun 27 2014 9:48pm | 
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| RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9159      | The ACC system uses radar, not laser. It won't affect a laser speed gun at all. In theory it could affect a radar speed trap but only if it uses a frequency similar to the speed trap which I doubt. The frequencies used by speed traps are well known and will be avoided by the ACC manufacturer. If you had the necessary skill/equipment you could probably adapt it to use a speed trap frequency.
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|  Sat Jun 28 2014 8:20am | 
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| RRSTDV8 Member Since: 12 Aug 2011 Location: Northamptonshire Posts: 9159      | 
 I think TDV8 had ACC as standard. 2012 SDV6 - it's missing a couple of cylinders 2008 TDV8 - it was a labour of love and is much missed | ||
|  Sat Jun 28 2014 8:21am | 
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| wilpert Member Since: 25 Jun 2014 Location: London Village Posts: 169      | I saw a TDV6 of same age and it didnt have it but maybe as you suggest it was fitted on the V8 as standard.
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|  Sat Jun 28 2014 9:05am | 
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