Electronic speed limit warning signs?
in [UK Drivers]
|
From: Stephen Bagwell on 17 May 2010 19:03 On 17 May, 23:51, Stephen Bagwell <stephenb196...(a)gmail.com> wrote: > On 17 May, 17:07, "ARWadsworth" <adamwadswo...(a)blueyonder.co.uk> > wrote: > > > > > > > "Peter Parry" <pe...(a)wpp.ltd.uk> wrote in message > > >news:fs00v51cghs7osnb5udf359aleg2vh21c9(a)4ax.com... > > > > On Sat, 15 May 2010 16:14:02 -0700 (PDT), Derek C > > > <del.copel...(a)tiscali.co.uk> wrote: > > > >>However I have noticed that > > >>they still light up even if you approach them at well below the speed > > >>limit, so I guess they don't actually monitor the speed of the > > >>vehicle. Does anyone know if this is a correct assumption? > > > > They do monitor speed but the radar module used is fairly simple to > > > keep cost down and not particularly accurate. As with car > > > speedometers they are set so they will _always_ warn you if you are > > > above the limit so if their accuracy is say +/- 5mph then they will be > > > set to trigger at 55MPH for a 60MPH limit and will alert you at a > > > speed somewhere between 50 and 60 MPH depending upon the individual > > > module error. > > > I passed one today. My speedo said 31MPH, my SatNav said 30MPH and the sign > > lit up in green saying 26MPH. I speeded up and the sign flashed a red 31MPH > > at me when I reached 34MPH on the Sat Nav display! > > > Adam > > There are some near me, Bury, Greater Manchester > > One shows your speed - says 30 when my speedo says 31 and the number > flashes if anyone goes above 30 > > Others flash a red circle with 30 in the middle which then becomes a > speed camera sign- Hide quoted text - > > - Show quoted text - This one isn't working properly just shows a dull red circle http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sll=51.184831,-1.856947&sspn=0.016785,0.0842&ie=UTF8&hq=&hnear=Bury,+Lancashire,+United+Kingdom&ll=53.585882,-2.300262&spn=0,0.1684&z=13&layer=c&cbll=53.586027,-2.300326&panoid=1zTT2_jSfhkd_wRccExanQ&cbp=12,160.82,,0,5.64
From: Stephen Bagwell on 17 May 2010 19:07 On 18 May, 00:03, Stephen Bagwell <stephenb196...(a)gmail.com> wrote: > On 17 May, 23:51, Stephen Bagwell <stephenb196...(a)gmail.com> wrote: > > > > > > > On 17 May, 17:07, "ARWadsworth" <adamwadswo...(a)blueyonder.co.uk> > > wrote: > > > > "Peter Parry" <pe...(a)wpp.ltd.uk> wrote in message > > > >news:fs00v51cghs7osnb5udf359aleg2vh21c9(a)4ax.com... > > > > > On Sat, 15 May 2010 16:14:02 -0700 (PDT), Derek C > > > > <del.copel...(a)tiscali.co.uk> wrote: > > > > >>However I have noticed that > > > >>they still light up even if you approach them at well below the speed > > > >>limit, so I guess they don't actually monitor the speed of the > > > >>vehicle. Does anyone know if this is a correct assumption? > > > > > They do monitor speed but the radar module used is fairly simple to > > > > keep cost down and not particularly accurate. As with car > > > > speedometers they are set so they will _always_ warn you if you are > > > > above the limit so if their accuracy is say +/- 5mph then they will be > > > > set to trigger at 55MPH for a 60MPH limit and will alert you at a > > > > speed somewhere between 50 and 60 MPH depending upon the individual > > > > module error. > > > > I passed one today. My speedo said 31MPH, my SatNav said 30MPH and the sign > > > lit up in green saying 26MPH. I speeded up and the sign flashed a red 31MPH > > > at me when I reached 34MPH on the Sat Nav display! > > > > Adam > > > There are some near me, Bury, Greater Manchester > > > One shows your speed - says 30 when my speedo says 31 and the number > > flashes if anyone goes above 30 > > > Others flash a red circle with 30 in the middle which then becomes a > > speed camera sign- Hide quoted text - > > > - Show quoted text - > > This one isn't working properly just shows a dull red circle > > http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sl...- Hide quoted text - > > - Show quoted text - Here the speed camera sign is illuminated http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sll=51.184831,-1.856947&sspn=0.016785,0.0842&ie=UTF8&hq=&hnear=Bury,+Lancashire,+United+Kingdom&layer=c&cbll=53.571523,-2.294624&panoid=ulxrNve5-blDHHxajYOsyQ&cbp=12,120.34,,0,13.26&ll=53.571409,-2.294598&spn=0,0.1684&z=13
From: Stephen Bagwell on 17 May 2010 19:16 On 18 May, 00:07, Stephen Bagwell <stephenb196...(a)gmail.com> wrote: > On 18 May, 00:03, Stephen Bagwell <stephenb196...(a)gmail.com> wrote: > > > > > > > On 17 May, 23:51, Stephen Bagwell <stephenb196...(a)gmail.com> wrote: > > > > On 17 May, 17:07, "ARWadsworth" <adamwadswo...(a)blueyonder.co.uk> > > > wrote: > > > > > "Peter Parry" <pe...(a)wpp.ltd.uk> wrote in message > > > > >news:fs00v51cghs7osnb5udf359aleg2vh21c9(a)4ax.com... > > > > > > On Sat, 15 May 2010 16:14:02 -0700 (PDT), Derek C > > > > > <del.copel...(a)tiscali.co.uk> wrote: > > > > > >>However I have noticed that > > > > >>they still light up even if you approach them at well below the speed > > > > >>limit, so I guess they don't actually monitor the speed of the > > > > >>vehicle. Does anyone know if this is a correct assumption? > > > > > > They do monitor speed but the radar module used is fairly simple to > > > > > keep cost down and not particularly accurate. As with car > > > > > speedometers they are set so they will _always_ warn you if you are > > > > > above the limit so if their accuracy is say +/- 5mph then they will be > > > > > set to trigger at 55MPH for a 60MPH limit and will alert you at a > > > > > speed somewhere between 50 and 60 MPH depending upon the individual > > > > > module error. > > > > > I passed one today. My speedo said 31MPH, my SatNav said 30MPH and the sign > > > > lit up in green saying 26MPH. I speeded up and the sign flashed a red 31MPH > > > > at me when I reached 34MPH on the Sat Nav display! > > > > > Adam > > > > There are some near me, Bury, Greater Manchester > > > > One shows your speed - says 30 when my speedo says 31 and the number > > > flashes if anyone goes above 30 > > > > Others flash a red circle with 30 in the middle which then becomes a > > > speed camera sign- Hide quoted text - > > > > - Show quoted text - > > > This one isn't working properly just shows a dull red circle > > >http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sl...Hide quoted text - > > > - Show quoted text - > > Here the speed camera sign is illuminated > > http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sl...- Hide quoted text - > > - Show quoted text - The google car was doing 23 mph http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sll=51.184831,-1.856947&sspn=0.016785,0.0842&ie=UTF8&hq=&hnear=Bury,+Lancashire,+United+Kingdom&layer=c&cbll=53.571158,-2.286121&panoid=AwCs8E_57VzMcwjOhjD3Yw&cbp=12,10.73,,0,5.59&ll=53.571205,-2.286015&spn=0,0.1684&z=13 This lay-by is where a speed camera van has been parked a couple of hundred yards behind the electronic sign http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=Bury&sll=51.184831,-1.856947&sspn=0.016785,0.0842&ie=UTF8&hq=&hnear=Bury,+Lancashire,+United+Kingdom&layer=c&cbll=53.570265,-2.28702&panoid=w8eK7e4b4axSK0fSyeYV6A&cbp=12,21.26,,2,14.76&ll=53.570186,-2.287045&spn=0,0.1684&z=13
From: ChelseaTractorMan on 18 May 2010 04:47 On Mon, 17 May 2010 15:51:50 -0700 (PDT), Stephen Bagwell <stephenb1963uk(a)gmail.com> wrote: >One shows your speed - says 30 when my speedo says 31 and the number >flashes if anyone goes above 30 > >Others flash a red circle with 30 in the middle which then becomes a >speed camera sign one in Brentwood today "flashes" at indicated 28 in a 30. -- Mike. .. . Gone beyond the ultimate driving machine.
First
|
Prev
|
Pages: 1 2 3 Prev: Tesco Clubcard Deals Next: interesting bit from the police about RLJ cyclists |