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ben1390
Lifetime Member
Joined: Jan 20, 2008
Posts: 37
Location: Devon, UK
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 Posted: Mon May 19, 2008 8:31 pm Post subject: M25 Variable Speed Limit |
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Hi All, Just a quick question, are the gantry cameras active when there is no speed displayed? i.e. if i am doing over 70mph will i get flashed by them when the signs are not active.
Thanks in advance |
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mpwilson99
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Joined: Jun 30, 2007
Posts: 462
Location: Hickstead, Sussex
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| Posted: Mon May 19, 2008 8:48 pm Post subject: |
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As far as i am aware - YES as your still doing more then the national speed limit. The cameras are active 24/7 i think.
Depending on what speed you went over them, that might determine you getting flashed or not...
Any ideas on what gantry it was location wise?
Cheers
MPW |
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ben1390
Lifetime Member
Joined: Jan 20, 2008
Posts: 37
Location: Devon, UK
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| Posted: Mon May 19, 2008 8:58 pm Post subject: |
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Thanks for your reply
I like to cruise along motorways at about 75-80mph but i have been sticking to the limit through the VSL and was wondering if i could go over without being flashed, I havent actually been flashed (yet) but as i said before i was wondering if i could go over without being caught |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Mon May 19, 2008 9:04 pm Post subject: |
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The cameras act as normal when the national Speed Limit is in force.
All cameras generally apply the ACPO rule of Speed Limit + 10% + 2 mph so at 70 mph the trigger speed will be 79 mph. However there is talk of a new type of camera with a lower trigger speed.
Don't forget if you are judging your speed by your car speedo that also under-reads anyway. |
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ben1390
Lifetime Member
Joined: Jan 20, 2008
Posts: 37
Location: Devon, UK
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| Posted: Mon May 19, 2008 9:07 pm Post subject: |
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| I see, thanks for your replies |
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Andy_P
Pocket GPS Moderator
Joined: Jun 04, 2005
Posts: 19991
Location: West and Southwest London
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| Posted: Mon May 19, 2008 9:22 pm Post subject: |
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I thought that, until recently at least, they DID NOT work until the matrix signs were switched on.
Then there were certainly some reports that they were going to be made active all the time, but it all got mixed up with rumours about new digital cameras replacing the old film ones and new sections coming into force, so I didn't think we'd got a definitive answer. |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Mon May 19, 2008 11:12 pm Post subject: |
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And so the confusion continues.......
I'm sure i know someone who's been done when the NSL was in force but then again would he know which camera gantry it was after all this time.... |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Mon May 19, 2008 11:27 pm Post subject: |
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According to this site
| Quote: | | The system was never intended to be a "speed trap" to simply prosecute drivers travelling over the national speed limit, however an amendment to the specification called for it to have this ability, and it subsequently became clear that the Police were more interested in this ability than its original purpose of smoothing traffic flow. It should be noted as a result that the system also enforces the national speed limit of 70mph as well as any lower limit that may be set. Therefore do not assume that because no signals are displayed you are safe from a possible ticket if you are over the limit. |
But then others say different.... |
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M8TJT
The Other Tired Old Man
Joined: Apr 04, 2006
Posts: 10118
Location: Bexhill, South Sussex, UK
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| Posted: Tue May 20, 2008 8:38 am Post subject: |
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| PaulB2005 wrote: |
Don't forget if you are judging your speed by your car speedo that also under-reads anyway. |
Paul.
Surely you mean the car speedo OVER-reads. The car speedo normally displays a higher speed than your actual speed, thus over-reads.
Feel free to correct me if this is wrong. |
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Darren
Frequent Visitor
Joined: 11/07/2002 14:36:40
Posts: 23848
Location: Hampshire, UK
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| Posted: Tue May 20, 2008 8:39 am Post subject: |
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Certainly back 'in my day' I was of the understanding that the cameras were only operational when the VSL was in force.
The simple face that these were at the time film cameras meant they dare not operate them at all times or they'd have been changing the film every hour!
However, recent rumours about a change to digital may well support the theory that they are now operational at all times 
_________________
Darren Griffin |
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PaulB2005
Pocket GPS Moderator
Joined: Jan 04, 2006
Posts: 9323
Location: Durham, UK
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| Posted: Tue May 20, 2008 8:45 am Post subject: |
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| Quote: | Surely you mean the car speedo OVER-reads. The car speedo normally displays a higher speed than your actual speed, thus over-reads.
Feel free to correct me if this is wrong. |
No you are right...... Keep getting that wrong.... |
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