m25 speeding - 100mph +
Discussion
A friend of mine (maybe it was me.. maybe it wasnt... its not important for this question) was flashed the other night on the m25 doing an indicated 110mph.
It was in the outside lane with 100-200m space infont and probably 1 car on the middle lane. Didn't fully intend on driving faster than 100 but it just happened with the space that opened up..
Anyway the story isnt to look for sympathy or to start yet another speeding debate..
He is pretty sure it was between jct 8-10 going anti clockwise (def before 10 as thats where he came off)
Camera was one on an overhead gantry and flashed twice.
So party for info to people that there is a flashing camera there.. and partly asking for advice as he is bricking it a bit now and doesnt want a ban for numerous reasons.
If the NIP does come through (heard there digital cameras now so its highly likely!) whats the best course of action..? someone suggested refusing to confirm who the driver was as this can only carry a maximum of 6 points.. rather than getting a possible ban and fine!?
thanks in advance.. and ive had a chat to him and he admits it was stupid to travel at such speed even though it was a clear road and promises to stay under 90 from now on.
thanks in advance (from my friend)
It was in the outside lane with 100-200m space infont and probably 1 car on the middle lane. Didn't fully intend on driving faster than 100 but it just happened with the space that opened up..
Anyway the story isnt to look for sympathy or to start yet another speeding debate..
He is pretty sure it was between jct 8-10 going anti clockwise (def before 10 as thats where he came off)
Camera was one on an overhead gantry and flashed twice.
So party for info to people that there is a flashing camera there.. and partly asking for advice as he is bricking it a bit now and doesnt want a ban for numerous reasons.
If the NIP does come through (heard there digital cameras now so its highly likely!) whats the best course of action..? someone suggested refusing to confirm who the driver was as this can only carry a maximum of 6 points.. rather than getting a possible ban and fine!?
thanks in advance.. and ive had a chat to him and he admits it was stupid to travel at such speed even though it was a clear road and promises to stay under 90 from now on.
thanks in advance (from my friend)
@ DVD I didn't think there were any gantry cmeras between J10 and J8 - google maps just shows one mobile site (but not sure what that means). There are lots just before J10 - on almost every gantry - but never sure which ones are active. Apocryphal stories say active intermittantly and threshold quite high (94?) but I wouldn't risk it. Sounds like another 14 days of "watch the postman"! 
lollers@dvd.get
My Road Angel goes nuts there so cameras are live I reckon.
Time to buy a bike I think.
Sorry.
Hang on which way was he going. The numbers run from the Dartford Tunnel clockwise. So if he was going anticlockwise and came off at 10 it must have been between a number higher than 10 and 10.
In which case I think he will be ok as long as the gantries were not showing a limit. My understanding is that the cameras are not type approved unless a temporary limit is showing.
Certainly I know someone who was doing well in excess of 100 between the M4 and Chertsey and was flashed and heard nothing.
In which case I think he will be ok as long as the gantries were not showing a limit. My understanding is that the cameras are not type approved unless a temporary limit is showing.
Certainly I know someone who was doing well in excess of 100 between the M4 and Chertsey and was flashed and heard nothing.
Beggarall said:
I didn't think there were any gantry cmeras between J10 and J8 - google maps just shows one mobile site (but not sure what that means). There are lots just before J10 - on almost every gantry - but never sure which ones are active. Apocryphal stories say active intermittantly and threshold quite high (94?) but I wouldn't risk it. Sounds like another 14 days of "watch the postman"!
It'll be between 10 & 11, there are camera boxes on just about every gantry on that stretch.CraigW said:
also at an indicated 110mph chances are your real speed is 100 or less
Statutory Instrument 1996 No. 3013 The Motor Vehicles (Approval) Regulations 1996 indicates that speedometers can over-read by Vtrue/10 + 6.25mph between 25 and 70mph - which is a significant margin (at 70 it means an indicated 82mph might actually be under the NSL). However, in modern and reasonably new vehicles it is reasonable to expect that the actual over-reading with be around half that (i.e. Vind = Vtrue/20 + 3.125mph), making an indicated 76 just under the NSL. Although there is no indication given for speeds higher than 70mph, simple extrapolation suggests that an indicated 110mph would be a tad over an 100mph actual - StreakyPS - Happy New Year - S
Edited by streaky on Thursday 3rd January 08:56
streaky said:
Statutory Instrument 1996 No. 3013 The Motor Vehicles (Approval) Regulations 1996 indicates that speedometers can over-read by Vtrue/10 + 6.25mph between 25 and 70mph - which is a significant margin (at 70 it means an indicated 82mph might actually be under the NSL). However, in modern and reasonably new vehicles it is reasonable to expect that the actual over-reading with be around half that (i.e. Vind = Vtrue/20 + 3.125mph), making an indicated 76 just under the NSL. Although there is no indication given for speeds higher than 70mph, simple extrapolation suggests that an indicated 110mph would be a tad over an 100mph actual - Streaky
That, very probably, has ruined not only his day but his fortnight. The least you could have done was to wish him happy new year as well.I'm told that speedos - not the ones you wear - can be made extremely accurate but that the over-reading is designed-in because it is expected, rather like the fuel gauge. So your suggestion that extrapolation works is probably quite right.
Happy new year OP.
I've yet to hear a first hand account of anyone having got done by those cameras. I was flashed once when I was doing *some* MPH and heard nothing.
Obviously there's a chance of a 100+mph nick, but I'm thinking it's not very likely.
Saying that, those gantries must be there for a reason so it's inevitable that they'll start biting people one day.
Isn't there a flashlight out there near 9/10 which goes off seemingly at random?
SM
Obviously there's a chance of a 100+mph nick, but I'm thinking it's not very likely.
Saying that, those gantries must be there for a reason so it's inevitable that they'll start biting people one day.
Isn't there a flashlight out there near 9/10 which goes off seemingly at random?
SM
Derek Smith said:
streaky said:
Statutory Instrument 1996 No. 3013 The Motor Vehicles (Approval) Regulations 1996 indicates that speedometers can over-read by Vtrue/10 + 6.25mph between 25 and 70mph - which is a significant margin (at 70 it means an indicated 82mph might actually be under the NSL). However, in modern and reasonably new vehicles it is reasonable to expect that the actual over-reading with be around half that (i.e. Vind = Vtrue/20 + 3.125mph), making an indicated 76 just under the NSL. Although there is no indication given for speeds higher than 70mph, simple extrapolation suggests that an indicated 110mph would be a tad over an 100mph actual - Streaky
That, very probably, has ruined not only his day but his fortnight. The least you could have done was to wish him happy new year as well.I'm told that speedos - not the ones you wear - can be made extremely accurate but that the over-reading is designed-in because it is expected, rather like the fuel gauge. So your suggestion that extrapolation works is probably quite right.
Happy new year OP.
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