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Averaging cameras. Why must people...
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# 1
pinkteapot
Old 27-07-2012, 5:11 PM
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Default Averaging cameras. Why must people...

... brake sharply when they spot one overhead?

Argh!
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# 2
Hintza
Old 27-07-2012, 5:16 PM
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I do have a serious chuckle when I see it.
“Every time you come to Russia with a sword, from a sword you will perish.” Aleksandr Zakharchenko August 2014. An apt warning!
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# 3
Sgt Pepper
Old 27-07-2012, 5:18 PM
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I don't know, I never have.
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# 4
pinkteapot
Old 27-07-2012, 5:19 PM
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I usually flick on cruise control and relax. Then my relaxation is spoiled by some numpty braking under the camera grrrr.
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# 5
Paperbird
Old 27-07-2012, 5:26 PM
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Quote:
Originally Posted by pinkteapot View Post
... brake sharply when they spot one overhead?

Argh!
Because they don't have a clue what the speed limit is.
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# 6
photome
Old 27-07-2012, 5:27 PM
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I regurlarly drive the A14 between cambridge and huntingdon that has average speed cameras and rarely do I see anyone braking under a camera.

Its not often anyone is even doing 70 though
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# 7
muckybutt
Old 27-07-2012, 6:31 PM
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I dont think thicko - stupid motorists realise quite how they work ?

The M62 is a right barrel of laughs at the moment between Wakefield and Bradford, i'm on there two - three times a week and happily poddle along at 50 - 53 mph knowing i'm within the limit yet am frequently overtaken some fly by me, i'm just left thinking wtf ?
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# 8
graham.senior
Old 27-07-2012, 6:40 PM
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Anybody know how fast you can really go as i see lorrys overtake me doing nearer 60 in a 50 limit.
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# 9
mugwump
Old 27-07-2012, 6:51 PM
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Quote:
Originally Posted by pinkteapot View Post
... brake sharply when they spot one overhead?

Argh!
They are probably related to the ones who brake down from 60 to 40 when they see a Gatso on an NSL road.



*For the pedants I am talking about car drivers where NSL = 60 for them
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# 10
Notmyrealname
Old 27-07-2012, 6:53 PM
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Quote:
Originally Posted by graham.senior View Post
Anybody know how fast you can really go as i see lorrys overtake me doing nearer 60 in a 50 limit.
They won't be. They have speed limiters restricting them to 90kph/56MPH.

However what a lorry has is a speedo which legally has to be more accurate than a car (2.5% compared to 10%) which is tested at a tachograph test center every 2 years to check calibration.

So whilst you are trundling along doing 50MPH on your speedo, the more accurate speedo in the truck following you would most probably be around 45MPH.

Now going back to the cameras, if you know the ACPO guidelines means they won't do you until you're doing 10%+2MPH over the limit (57MPH in a 50 limit) and you know you're in a vehicle with a quite accurate speedo and a limiter that'll not exceed the ACPO guideline then there's a tendency to just run on the limiter.
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# 11
Sgt Pepper
Old 27-07-2012, 6:54 PM
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Quote:
Originally Posted by graham.senior View Post
Anybody know how fast you can really go as i see lorrys overtake me doing nearer 60 in a 50 limit.
Bear in mind their speedo is calibrated is yours?
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# 12
muckybutt
Old 27-07-2012, 6:56 PM
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Quote:
Originally Posted by graham.senior View Post
Anybody know how fast you can really go as i see lorrys overtake me doing nearer 60 in a 50 limit.
Theres normally about a 10% margin them so 55 in a 50 would be a safe bet, I wouldnt chance points for a few miles an hr faster.
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# 13
Looksguywalker
Old 27-07-2012, 7:42 PM
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Quote:
Originally Posted by muckybutt View Post
Theres normally about a 10% margin them so 55 in a 50 would be a safe bet, I wouldnt chance points for a few miles an hr faster.
There is no 'normal' margin...unless you can point to any law/regulation/rule. Betting is a gambling BTW which MSE does not condone.
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# 14
Arfa__
Old 27-07-2012, 8:29 PM
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Granted, most car speedo's aren't super accurate, but what about the average speed shown on your satnav? Would I be correct to assume this is fairly accurate, at least better than 10%. Assuming your travelling in a reasonably straight line (motorway) and at a reasonable speed (>30mph).
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# 15
andy8442
Old 27-07-2012, 8:40 PM
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Back to the OP, speed equals distance over time.Simples..... But unfortunately it is a testament to just how thick most people are in this country that they think a stab on the brakes at the camera will make a difference to their average speed. Numpties the lot of them.
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