Average speed check in roadworks

dal

dal

Associate
Joined
10 Sep 2005
Posts
909
Location
Lincolnshire
Hi all, nearly everyday I travel through the roadworks on the M1 between junctions 26 - 27 which has a 50 mph speed limits with the specs cameras in place & everyday I see people in cars / vans shooting though there doing about 70, do they know somthing I dont, I mean surely they are aware it's a 50 limit with cameras, how do these people get away with it, the only way I can see how they could get away with it is if the vehicle is not registered in there name.
I've heard that the activation speed is 60 but I personally dont want to find out if this is the case.
 
AFAIK and have been told if the average speed between 2 cams is 50 then they should be fine so you could go through the first at 60 and slow down to average 50 before going through the second.

Well that's what I was told but have never had the balls to try it out. :)
 
hehe i drive through the same junctions and have thought the same thing. some of the vehicles are foreign lorries but most are regular uk cars. i was told that if you change lanes the cameras can't keep up - i reckon that's bull though, the woman who told me claims the wife of a traffic cop told her. but like the op, i'm too chicken (and tight) to try it!
 
The changing lanes thing is an Urban Legend as far as I'm aware. Heard similar stories up here when the cameras were in operation between Dundee and Perth. Funnily enough, someone knew someone who was married to a policeman who told them something. Just drive at 50 :)
 
at the end of the day, you drive how you want too, let them get on with it
i always stick to what they say, that way i know i wont get a ticket and its not really a problem sticking to the limit they set
 
AFAIK and have been told if the average speed between 2 cams is 50 then they should be fine so you could go through the first at 60 and slow down to average 50 before going through the second.

Well that's what I was told but have never had the balls to try it out. :)

Well yes - this is what is meant by average speed cameras.
You are "seen" as you go past camera 1.
Camera 2 is a distance of x meters apart from Camera 1.
The system knows that if you were travelling between Camera 1 & Camera 2 at 50mph it would take y seconds to do it.
So as long as the actual time you take to go between Camera 1 & Camera 2 is equal or less than y then your safe.
So yes, in theory you could pass camera 1 at 90mph, so long as you slowed right down and it took you the correct amount of time to go past Camera 2 you'd be fine.
 
We have some average speed cameras for the road works, its a 50mph zone, but what gets me is there is only one camera for 2 lanes. It looks like the camera is only pointing at the outside lane. a lot of people have told me they are not switched on. The local paper quoted £200,000 in fines since they started 1 year ago. Yet i know people that rocket up and down the stretch everyday, and not one fine.
 
some of them may have come on at 26 south or are going off at 27 ( south again ) in both instances you only pass one camera so no reading is gained

then again I have seen many just seemingly ignoring the limit
 
When they were on the M6 near Liverpool I used to go through them at 70 and not 50.. Never got a ticket or anything and I used the motorway a fair bit.
 
Specs cameras are the only time I use cruise control.

The changing lanes thing was true, but din't last long. A quick software upgrade to the plate recognition / analysis software fixed it.
 
This is how they do it. When they come to the 2nd camera, they quickly pull into someone elses lane as close as poss to their rear bumper (mostly to the back of vans/lorries) the camera does not see you as having passed.

Had one guy do it to me one day and seen it countless times, on the roadworks widening between Luton M1 and the M25.
 
Well yes - this is what is meant by average speed cameras.
You are "seen" as you go past camera 1.
Camera 2 is a distance of x meters apart from Camera 1.
The system knows that if you were travelling between Camera 1 & Camera 2 at 50mph it would take y seconds to do it.
So as long as the actual time you take to go between Camera 1 & Camera 2 is equal or less than y then your safe.
So yes, in theory you could pass camera 1 at 90mph, so long as you slowed right down and it took you the correct amount of time to go past Camera 2 you'd be fine.

The idiots on the M1 roadworks are probably doing this, thinking they're dodging the fines.

but the roadworks around 26-28 on the M1 have 1 camera for all 3 lanes so doesnt work anymore

that thing was ages ago and has since been sorted.
 
This is how they do it. When they come to the 2nd camera, they quickly pull into someone elses lane as close as poss to their rear bumper (mostly to the back of vans/lorries) the camera does not see you as having passed.

Had one guy do it to me one day and seen it countless times, on the roadworks widening between Luton M1 and the M25.

I've done the hiding beside a lorry when going through the current SPECS cameras on the A40, no idea if it works as I doing the required average but made me feel good :)
 
I try to average just over 50mph across the cameras...

You can get away with it in the sense it's 55mph you have to break and most cars over estimate mph.. so around 58mph your safe*ish IMO

I wouldn't test it above an indicated 10% though..

I happily drive through 40mph cameras at 43-44mph indicated :p
 
We have some average speed cameras for the road works, its a 50mph zone, but what gets me is there is only one camera for 2 lanes. It looks like the camera is only pointing at the outside lane. a lot of people have told me they are not switched on. The local paper quoted £200,000 in fines since they started 1 year ago. Yet i know people that rocket up and down the stretch everyday, and not one fine.

Not that you know of.
You need to remember that a conversation that goes "Yer, I speed down that road every day and no fine yet" is way cooler than "Yer, I stick to that speed limit" or "I've had one ticket, so I don't speed any more".

I know a mate of mine - 10 years driving and not had a single point on his license and he speeds all the time, in fact he is rarely driving at the limit, usually a little bit over and making full use of the unofficial 10%...

...two weeks ago he came into work after a morning in court.
He'll be getting a lift in with a friend for the next year as he reached his 12 points a little while ago for another speeding offence.
Slightly different to the story he usually tells us.
 
Back
Top Bottom