Mobile Speed Cameras

#1
I was travelling along the motorway this morning and saw one of those mobile speed cameras fitted into a van parked on a bridge above the opposite carriageway. I got to wondering how this type of camera judges the speed at which a particular vehicle is travelling when there are no calibration marks painted onto the carriageway, as there are for fixed cameras. Also how does it differentiate between traffic travelling at different speeds in adjacent lanes? My own personal opinion is that they allocate a random speed in excess of the speed limit to each snap and send out the fine regardless, banking on people paying the fixed penalty because they don't want the hassle of a court appearance! Does anyone know the answer, or have any decent conspiracy theories?

Berlin
 
#3
Aren't some of the cameras on bridges etc, for checking VED etc.
This might seem like a numb question but how do the average speed cameras work. I tootle along at 40 or 50mph and other vehs scream by.
 
#4
Some vans have the APNR and some are as Sparky states, laser/video equipped. If it was APNR there would probably have been some cars very close ready to pursue the bandits.
 
#5
brucewillis said:
how do the average speed cameras work. I tootle along at 40 or 50mph and other vehs scream by.
Example: Speed limit 60 mph. They clock you at camera A as you pass it at 12 o'clock. They then clock you one mile on at camera B as you pass it. At 60 mph you travel at one mile per minute. Therefore if you pass camera B at 12.01 or later you are OK. If you get there in less than one minute it means that you were travelling at more than 60 mph, so they nick you.

What I want to know is, the average speed cameras don't just operate at the start and finish of the roadworks, but at intervals in between as well. Does that mean you can be nicked for multiple offences over the same set of roadworks? (i.e. if there are four cameras along one set of roadworks can you be done for A to B, B to C and C to D?
 
#6
SCHWEIK I've only ever seen average speed cameras at the start and finish of a section. If there are several it would be frowned upon by a Court to bring muliiple summonses unless it can be clearly shown that separate offences occurred and that the speeding was not all part of one event.
 
#7
rockpile said:
SCHWEIK I've only ever seen average speed cameras at the start and finish of a section. If there are several it would be frowned upon by a Court to bring muliiple summonses unless it can be clearly shown that separate offences occurred and that the speeding was not all part of one event.
Thanks for that. I'm absolutely sure Ive seen more than just the two. Maybe they add extra ones if traffic joins the restricted road from a side road?
 
#8
rockpile said:
SCHWEIK I've only ever seen average speed cameras at the start and finish of a section. If there are several it would be frowned upon by a Court to bring muliiple summonses unless it can be clearly shown that separate offences occurred and that the speeding was not all part of one event.
There were some deployed at roadworks on the M4 between Reading and Newbury. There was one at either end and one or two in between.

Berlin
 
#10
to quote Steve "There was a liveleak video of a mobile camera which was hidden as a horsebox in North Wales but i'd like to hope that was a April Fools"
Well it appears to be true, North Wales Police are having to go to extreme measures to prevent Bikers killing themselves on our local roads.
In a 3 month period last year 9 bikers died on the roads around here and every attempt at reducing this death toll seems to receive riddicule from the press.
In summer I often have lunch at the Ponderosa on the top of the Horse Shoe Pass and it is very common to hear the Real Bikers being critical of the minority who use the roads as a race track,
As far as Cars are concerned, the roads in North Wales are now the safest in the UK thanks to the efforts of the local "Plod"
 
#11
Berlin_104s said:
rockpile said:
SCHWEIK I've only ever seen average speed cameras at the start and finish of a section. If there are several it would be frowned upon by a Court to bring muliiple summonses unless it can be clearly shown that separate offences occurred and that the speeding was not all part of one event.
There were some deployed at roadworks on the M4 between Reading and Newbury. There was one at either end and one or two in between.

Berlin
The only thing that springs to mind is that average cameras were at the start and finish with mobile Gatso's in between to detect short distances of speeding. I stand by my original comment that separate summonses must be shown clearly shown to be separate offences.
 
#12
I don't think they were Gatsos. There were two of them in yellow bodies mounted side by side atop a tall thin yellow pole. IIRC they were two of these mounted between the ones at each end of the roadworks.

Berlin
 
#13
Berlin_104s said:
I don't think they were Gatsos. There were two of them in yellow bodies mounted side by side atop a tall thin yellow pole. IIRC they were two of these mounted between the ones at each end of the roadworks.

Berlin
Could they be ones which are normally there operating when the road works are not in place? Otherwise I cannot think of anything else.
 
#14
rockpile said:
SCHWEIK I've only ever seen average speed cameras at the start and finish of a section. If there are several it would be frowned upon by a Court to bring muliiple summonses unless it can be clearly shown that separate offences occurred and that the speeding was not all part of one event.
M74 North of Carlisle has a few scattered about along stretch of road works right now!
 
#15
Berlin_104s said:
I don't think they were Gatsos. There were two of them in yellow bodies mounted side by side atop a tall thin yellow pole. IIRC they were two of these mounted between the ones at each end of the roadworks.

Berlin
Two seperate cameras mounted outside of the van on a bridge? I think they are just traffic survey ones but im not sure.

BobJamesCo; it's a shame to think it's come to hiding inside horseboxes to do so. I'd like to see a different attitude really, someone having a penalty notice flap through they're door three weeks after the event isn't going to educate them that the next corner ahead NEEDS to be taken at a sensible speed.
I'd prefer massive LED signs that shout "OI, BIKER REG X1234 XXX, SLOW DOWN BY TWENTY OR YOUR DEAD" at an accident blackspot.



But then they don't make money. They would only save lives.
 
#16
Berlin_104s said:
There were some deployed at roadworks on the M4 between Reading and Newbury. There was one at either end and one or two in between.
Concur with Berlin. Roadworks now removed mind, but certainly multiple 'Average Speed' cameras in postion at the time. Only ONE prosecution can be made per transit through a length of road subject to this type of enforcement. They do work better than the fixed cameras at keeping speeds down.
 
#17
Steve,
I'd prefer massive LED signs that shout "OI, BIKER REG X1234 XXX, SLOW DOWN BY TWENTY OR YOUR DEAD" at an accident blackspot.

Well the A41 A51 A5 and many minor roads allready have Large Signs every few miles listing the number of dead and injured and for the last 2 years almost every lamppost in North wales has had a Sign saying "Is it worth dying for"
On a more Heartless note, I am getting a litle fed up of being stuck in traffic because some fool on a motorbike has killed himself by breaking the speed limit
 
#18
Steve,
I'd prefer massive LED signs that shout "OI, BIKER REG X1234 XXX, SLOW DOWN BY TWENTY OR YOUR DEAD" at an accident blackspot.

Well the A41 A51 A5 and many minor roads allready have Large Signs every few miles listing the number of dead and injured and for the last 2 years almost every lamppost in North wales has had a Sign saying "Is it worth dying for"
On a more Heartless note, I am getting a litle fed up of being stuck in traffic because some fool on a motorbike has killed himself by breaking the speed limit
 
#20
Having just received a letter telling me I have been done doing 48 in a 40 by one of these abominations in Southampton, I would personally like to say that those that dreamt up their use and those that operate them should be consigned to the 7th circle of Hell :evil:

PS anyone know what I'm to expect for my sins?
 

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