Police using mobile "Specs" Cameras on the way into Wokingham (off A329M)
23 November 2004, 10:45 AM
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Originally Posted by MadMark
Nasty ..... but first time I've seen them! 
John
23 November 2004, 11:37 AM
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They quite often (well every 6 months or so) have a mobile unit parked up on the right past the 3 Frogs going into Wokingham. Didn't spot them myself this morning but I'm sure I wasn't speeding 
.
The rubbers are likely to be part of a speed profile exercise to review effectiveness of speed limits. If the results show too much deviation expect the 30 mph limit to be moved further out of the town (St Annes Manor bend?)
.The rubbers are likely to be part of a speed profile exercise to review effectiveness of speed limits. If the results show too much deviation expect the 30 mph limit to be moved further out of the town (St Annes Manor bend?)
23 November 2004, 11:44 AM
#5
heard about a conjestion charge around there
if theres rubbers around then you slow down for them cos if they get high numbers of speeders then theyll have a van round there a week or two later
if theres rubbers around then you slow down for them cos if they get high numbers of speeders then theyll have a van round there a week or two later
Last edited by InvisibleMan; 23 November 2004 at 11:46 AM.
24 November 2004, 12:58 PM
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Originally Posted by MadMark
Surely the "rubbers" can only calculate number of wheels over them - not speed?
)
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24 November 2004, 01:04 PM
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Originally Posted by colex
Apparently they have programmed in various axle profiles and weights and based on the time difference between front and rear axle can calculate the speed. I don't know exactly how it works but I have seen the output from one of the surveys carried out in Wokingham (my ex works at the council - in traffic management )
)Richard
24 November 2004, 01:55 PM
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Originally Posted by colex
Apparently they have programmed in various axle profiles and weights and based on the time difference between front and rear axle can calculate the speed. I don't know exactly how it works but I have seen the output from one of the surveys carried out in Wokingham (my ex works at the council - in traffic management )
)
24 November 2004, 07:45 PM
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Originally Posted by fiestaboy
AFAIK thet have 2 sets of rubber strips over a fixed distance to perform the speed calculation
Richard
Richard
2 rubber tubes 1 metre apart for speed - it is the puff of air down the tube that triggers a sensor,
1 rubber tube for counting only - there is not differentiation better vehicles. For that you need induction loops, like the onces set in to the road surface at traffic lights. These work by the magnetic field of the vehicle interacting with the field of the loop inducing current, these can be set very accurately indeed. Some people think the rectangle on the road senses weight, it does not. I understand in Reading there are roads where the buses go against the oneway system and some OGVs try and use the lane as well and have been caught at gates that are set for buses/coaches only. Being of a certain size they can not reverse out of the gateway so get done by the Police.
John
24 November 2004, 09:57 PM
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You could well be right John (sound right anyway). Maybe that's why my ex became an ex - I didn't listen to her. Still, I'll ask her anyway - I'm curious now.
25 November 2004, 11:14 AM
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Originally Posted by Johnhowell
This is my understanding as well:
2 rubber tubes 1 metre apart for speed - it is the puff of air down the tube that triggers a sensor,
1 rubber tube for counting only - there is not differentiation better vehicles. For that you need induction loops, like the onces set in to the road surface at traffic lights. These work by the magnetic field of the vehicle interacting with the field of the loop inducing current, these can be set very accurately indeed. Some people think the rectangle on the road senses weight, it does not. I understand in Reading there are roads where the buses go against the oneway system and some OGVs try and use the lane as well and have been caught at gates that are set for buses/coaches only. Being of a certain size they can not reverse out of the gateway so get done by the Police.
John
2 rubber tubes 1 metre apart for speed - it is the puff of air down the tube that triggers a sensor,
1 rubber tube for counting only - there is not differentiation better vehicles. For that you need induction loops, like the onces set in to the road surface at traffic lights. These work by the magnetic field of the vehicle interacting with the field of the loop inducing current, these can be set very accurately indeed. Some people think the rectangle on the road senses weight, it does not. I understand in Reading there are roads where the buses go against the oneway system and some OGVs try and use the lane as well and have been caught at gates that are set for buses/coaches only. Being of a certain size they can not reverse out of the gateway so get done by the Police.
John
If i wheelie my motorbike across one of these sets of 2 rubber strips, will it 'think' that the vehicle behind's front axle is in fact my back axle
IYSWIM...therefore, putting the whole thing out of sync?
Richard
29 November 2004, 11:07 AM
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John - you are correct.
The counters were for a speed survey and there will be appearing, in the near future, some vehicle activated signs along London Road.
The counters were for a speed survey and there will be appearing, in the near future, some vehicle activated signs along London Road.
02 December 2004, 09:05 PM
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I got zapped my a mobile laser gun on the other way from the A329M into bracknell at the coppid beech dong 50 in a 40, but was nice a polite and got told not to do it again and sent on my way...
I did notice on the way into Reading town centre the other day the DVLA were doing road tax spotting...
I did notice on the way into Reading town centre the other day the DVLA were doing road tax spotting...
10 February 2005, 09:35 AM
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Originally Posted by colex
John - you are correct.
The counters were for a speed survey and there will be appearing, in the near future, some vehicle activated signs along London Road.
The counters were for a speed survey and there will be appearing, in the near future, some vehicle activated signs along London Road.
11 February 2005, 03:46 PM
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Originally Posted by InvisibleMan
so thats up permenant there now? went passed at 30 but it still flashed up...they dont activate anything elsewhere do they?
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