Average speed cameras

[mc_orion]

How do they work?

As i have to go through one of these on the M5(J4A) most nights, and i normally stay in lane 1 and set the cruise to 60mph and keep at that till i get onto the off ramp for J4.

But ive had cars come up behind me bearing down on me wanting to go faster, or cars/lorrys going past me at well over 50mph.

So am i right in thinking im in the right or am i not?

[MLC]

They measure the time you've travelled between the two cameras, which gives your speed.

(And on the M5, I suggest you set the cruise to 50mph, there's very little tolerance there........still haven't seen any workmen doing anything yet!)

[Blagmeister]

I go through that section every week, [I did today] and a few others like it. As far as I know the SPECS cameras use number plate recognition technology and compare plates between cams and do a simple time/distance calc to get avg speed.

Transgressors who go over the tolerance get NIP'ed automatically as I understand. No doubt one of the bobbies on here will confirm/clarify.

Like you I just stick the cruise on at the appropriate speed and let all the muppets who want to hoof past do so.

[FinestJammy1]

Average speed cameras calculate your speed between two points. It may not be sequential cameras but might be between the 1st and 3rd for example. Not all cameras on a stretch of road will be active.

I agree that people don't seem to understand them. I set the cruise at 50mph on the M1 jnc 25-28 camera zone. I see people going 70mph and then braking a bit before the camera, they will be getting a little gift on their doormats!

[mc_orion]

They measure the time you've travelled between the two cameras, which gives your speed.

(And on the M5, I suggest you set the cruise to 50mph, there's very little tolerance there........still haven't seen any workmen doing anything yet!)

I do mate

No dont think they have even started work have they, tho they have taken over the police pull-in at whychbold

[n_hudson]

I know exactly how you feel! During the Luton roadworks on the M1, I would cruise at 50 and the amount of cars that flew past me! I couldnt believe it! Kn0bs in 4x4's, BMW's and Merc's mainly. It really made me wonder... I never risked it thou! LOL

[mc_orion]

I know exactly how you feel! During the Luton roadworks on the M1, I would cruise at 50 and the amount of cars that flew past me! I couldnt believe it! Kn0bs in 4x4's, BMW's and Merc's mainly. It really made me wonder... I never risked it thou! LOL

I was very tempted the other nite when the new insignia SRi went past me, but thought better of it...glad i dd now, with what MLC said about the tolerance on those cameras

[Stevel]

Specs. cameras were put up on the M56 a couple of years ago. I did the same and set the CC and then watched people fly down the outside lane then brake for the last camera.

I then watched the, "Just received an NIP for speeding on the M56 but I know I was under the limit when I passed the camera" posts appear on pepipoo..."

[scottyd]

is it true if you change lane they cant tell and therefore not get done? just a rumour ive heard i dont believe it tho

[Stevel]

is it true if you change lane they cant tell and therefore not get done? just a rumour ive heard i dont believe it tho

I heard that too. We all used to change lanes just in case.