Averaging cameras. Why must people...

pinkteapot

... brake sharply when they spot one overhead?

Argh!

Hintza

I do have a serious chuckle when I see it.

Sgt_Pepper_2

I don't know, I never have.

pinkteapot

I usually flick on cruise control and relax. Then my relaxation is spoiled by some numpty braking under the camera grrrr.

Paperbird

pinkteapot wrote: »

... brake sharply when they spot one overhead?

Argh!

Because they don't have a clue what the speed limit is.

photome

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

muckybutt

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 !!!!!! ?

graham.senior

Anybody know how fast you can really go as i see lorrys overtake me doing nearer 60 in a 50 limit.

System

pinkteapot wrote: »

... 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

Notmyrealname

graham.senior wrote: »

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.

Sgt_Pepper_2

graham.senior wrote: »

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?