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HJ Comments on Average Speed Cameras Telegraph - audi dave

Re. HJ's comments about average speed cameras in the Telegraph column (published website, 2nd June):

"Readers have been done. Tends to happen at night when the roads are clear and there is no justification for cameras because no one is working on the road. In the daytime, the weight of traffic they cause usually enforces the speed limit imposed.

There is some evidence that average speed cameras actually cause crashes, as they did in the contraflow past Junction 3 of the M3 on 21st October, leading to some serious injuries and massive commuter congestion."

The speed limits put in roadworks are almost always there partly to protect the road user as well as the workforce. For example, obstructions like a new gantry may be part-way through being installed at the end of a shift - they can't be properly protected, so the speed limit with no workforce there reduces the consequences in the event the obstruction gets hit.

As to average speed cameras contributing to accidents, that's just misleading. No road layout is going to completely prevent accidents. There is overwhelming evidence to say that average speed cameras reduce accidents. An example here:

http://www.speedcheck.co.uk/specs.htm#casualty_reduction

The same link shows that average speed cameras have a dramatic improvement on traffic flows in congested conditions - such as when a lane is taken out as part of the roadworks.

HJ Comments on Average Speed Cameras Telegraph - julie page
I guess your point about unfinished work could be true in some situations so explain why the speed limit is not suspended the rest of the time when o work is being carried our or why it needs a speed limit for the entire length of road works if only one section is being repaired

I am told this used to happen pre camera days when the speed limits were covered up or the signs removed when the work finished for the day

Then you point to a commercial web site and call it overwhelming evidence

Statistical data submitted to attempt to justify speed cameras is often found to be irrelevant
HJ Comments on Average Speed Cameras Telegraph - Armstrong Sid
There is overwhelming evidence to say that average speed cameras reduce accidents. An example here:

Well they would say that wouldn't they; the company who are responsible for the system are unlikely to say otherwise.

HJ Comments on Average Speed Cameras Telegraph - audi dave

The accident comparison figures on the Specs website are overwhelming evidence in my view that average speed cameras reduce accidents at roadworks. More than 50% reduction in Killed and seriously injured at every site where average speed cameras have been installed over the last two years. That's 50% less KSI on the same stretch of road over the same period when no roadworks are in place.

All injury accidents are recorded by the Police, so the injury rate cannot be in dispute and the timescale for the "pre-works" accident recording is 3 years - long enough to get enough accident data to make a valid comparison.

I don't work for SPECS by the way, I just believe that average speed cameras in roadworks are a good thing.

If you want more convincing about obeying speed limits in roadworks, see here : http://www.highways.gov.uk/knowledge/20639.aspx

HJ Comments on Average Speed Cameras Telegraph - midlifecrisis

Most m/way work takes place at night. The SPECS remain during the day because they can't physically move all the barriers and equipment.

I do wish HJ would get some facts right before posting this sort of thing.

HJ Comments on Average Speed Cameras Telegraph - Ben 10

Then only have the cameras working when work is actually in progress.

HJ Comments on Average Speed Cameras Telegraph - oilrag

Barriers and cones will likely prove a hazard though. I wouldn`t want to be on the receiving end of a cone if one of those `Road Kings` comes through at 100mph.

Edited by oilrag on 04/06/2010 at 19:08

HJ Comments on Average Speed Cameras Telegraph - julie page

If you consider that most indepandant research shows that 5% of accidants are caused by speeding it is hard to understand how speed cameras have reduced accidants by 50% or more

HJ Comments on Average Speed Cameras Telegraph - nortones2

He seems to have an axe to grind - rather like Safe Speed and cohorts. Sadly.

HJ Comments on Average Speed Cameras Telegraph - cheddar

Sometimes 50mph or less is necessary through roadworks though there needs to be a balance, i.e. when there is little sign of activity, two or three clear lanes, no contraflow and the big-brother cameras on poles staring down so traffic potters through at a mind numbing 50mph for mile upon mile upon mile upon mile Zzzzzzz.

This is frankly ridiculous and at peak times simply adds to congestion. itself a causal factor in accidents.

Edited by cheddar on 05/06/2010 at 08:28

HJ Comments on Average Speed Cameras Telegraph - Westpig

The whole debate on speed and cameras can easily have flaws if the bigger picture is not looked at.

Any statistics and studies done are only as good as the information put in or the angle looked at in the first instance.

To state, for example, speed was a factor in a particular death may well be factually correct...but...if the driver was rip roaring drunk...or was high on drugs...or habitually drove exceptionally badly to a 'dangerous driving' level ...or neglected his vehicle to a very high degree...and this included speed (and some people do all of these at once)...then simply saying speed caused that accident is not wholly accurate, speed had a part to play certainly, but maybe a small part in the big scheme of things.

The next driver who 'speeds' may well be otherwise wholly law abiding, takes pride in driving otherwise correctly, maintains his car well, doesn't drink drive and never touches drugs etc,etc.

If you look at the stats on people driving with no insurance and their propensity to have accidents, then there's a hint there at what i'm saying i.e. the lawless are usually (not always) the ones causing the real problems...yet Mr and Mrs Average are constantly hassled by cameras...(the true lawless don't worry about that, they don't register their cars).

The Govt must take responsibility for this. The ridiculous over simplification of the 'speed kills' propoganda has got people literally believing it. Of course speed can kill, that's glaringly obvious...it's speed at an inappropriate time/place that does people in..and that's where the vitriol should be aimed at.

...and 'no' before anyone tries to misquote me...i'm not after a 'free for all' on speed.

HJ Comments on Average Speed Cameras Telegraph - oilrag

I agree with HJ about the totally clear Motorway in Notts. We came through that on the return from Germany and it felt ridiculous after the speeds we were doing over there.

Incidentally, `thundering` down to Sheffield this Morning at an indicated 80mph - spotted an almost stationary object in the slow lane (as we call it around here)

I thought it was that grim faced couple in the Axiam 500 at first. You know - gasping along and and achieving counterpoint with the exhausts of Briggs & Stratton lawnmowers in back gardens.

But no. It was a very very slow Reliant Kitten - Mitten crabbing it`s way along- body hanging off a bit and looking for all the world like a wheely bin - tipped over and with 4 wheels instead of the expected (rear view) three.

You wouldn`t need speed limits if they had been a commercial success. Though as they were seemingly made of compressed Weetabix - a minimum speed of 40mph would have been needed to stop crows landing on them and pecking the roof off on long trips.

Perhaps that was it.....

HJ Comments on Average Speed Cameras Telegraph - Ben 10

"one of those `Road Kings` comes through at 100mph."

Well they shoudn't be, should they.

Well if you support the case then have the cameras at say 50mph during working hours and then "tweaked" to 70mph at all other times. Then the traffic will be moving at the legal limit and not at 100mph if they are just switched off.

I still haven't seen anyone post here or "anywhere" else that has received an actual fine for excess speed through sets of SPECS cameras. Can someone prove these things actually work. I see so many vehicles exceeding the speed limits through these cameras which leads me to believe they are a bluff.

Edited by Ben 10 on 05/06/2010 at 18:40

HJ Comments on Average Speed Cameras Telegraph - galileo

Click the 'traffic' option on Google Earth and it claims to show live traffic speeds on motorways: zoom in, pick a coloured dot and click on it and the 'actual' traffic speed is shown.

Interestingly, on the SPECS limited stretch of M62 near Leeds it usually shows 51/53 mph, Nearer to Goole up to 77 seems common. Not sure how these numbers are picked up, how accurate, average or individual vehicles but it does highlight with yellow dots the normal congestion sites.

HJ Comments on Average Speed Cameras Telegraph - oilrag

I seem to remember the traffic speed info is coming from GPS enabled mobile phones, in cars - logged into Google maps..

I might be wrong about that though.

HJ Comments on Average Speed Cameras Telegraph - woodster

Cheddar - the one thing a 50 limit DOESN'T do is add to congestion. The maximum capacity of a motorway is when traffic flows at 18 mph. Increase the speed and teh separation between vehicles increases, thus reducing overall capacity. As for HJ's comments in the rag- touted as an expert but frequently with unqualified, unquantified bar-room opinion. From an ex-pat!

HJ Comments on Average Speed Cameras Telegraph - Hugh Watt

Cheddar - the one thing a 50 limit DOESN'T do is add to congestion. The maximum capacity of a motorway is when traffic flows at 18 mph.

An interesting perspective but perhaps misleading? This technical definition of capacity doesn't necessarily provide a measure of congestion - chugging along a motorway at 18 mph I would tend to think it must be a bit congested. The broader argument that fixing a speed limit of 50 mph is beneficial for traffic flow on a busy motorway seems to me a rather different one, based on modelling of driver behaviour.

HJ Comments on Average Speed Cameras Telegraph - whoopwhoop

What is woodster on about? Ex pat? Where did he get that foolish prattle from? If I was ex pat how would I have personally experienced the nonsensical 50 limit retention on the finished section of M1, and how would I have witnessed the crash in the contra flow lane of the M3? Nitpicking my column, my observations and my opinions is a bit like criticising Jeremy Clarkson. I freely acknowledge JC is the biggest and the best and the richest. But I have also achieved my own modest measure of success by doing things my way instead of taking orders from people like woodster. I'm not a politician. The whole point is not to try to please everyone. It's to upset the stuffed shirts, the pompous and the rule abiders. And sometimes (by advocating left foot braking) to save the lives of their wives. That's what gets readership.

HJ

HJ, The way I read it, Woodster was referring to himself as an ex-pat. Certainly thats how it reads gramatically.....

I'm not sure who is more guilty of the "foolish prattle" as you put it....

HJ Comments on Average Speed Cameras Telegraph - cheddar

Cheddar - the one thing a 50 limit DOESN'T do is add to congestion. The maximum capacity of a motorway is when traffic flows at 18 mph.

An interesting perspective but perhaps misleading? This technical definition of capacity doesn't necessarily provide a measure of congestion.

Woodster, congestion and capacity are different things, the point is that stastically an accident is more likley to happen on a congested motorway with all traffic flowing at, say, 30mph and a free flowing motorway with traffic traveling at speeds between 55 and 75mph.

Aside from this it is a simple fact that it you extent journey time you increase the amount of traffic on the road and if you reduce journey time you also reduce the amount of traffic on the road.

HJ Comments on Average Speed Cameras Telegraph - Avant

Surely the real danger (especially on motorways) is not from speed in itself but from people driving too close to the vehicle in front, coupled with putting their brakes on too soon and too often. Sudden braking causes more accidents, I'd guess, than excessive speed, not that I'm advocating the latter.

I may be wrong and will stand corrected, but if the speed limit is 50 mph surely there's more bunching than when it's 70 mph? People driving slower move closer to the vehicle in front. If this is true then logically the chance of accidents is greater - especially if you add in the frustration factor when the lower limit is clearly unnecessary.

With luck the Government's necessary financial cuts will reduce roadworks to those that are really necessary, rather than cosmetic / using up a fixed budget.

HJ Comments on Average Speed Cameras Telegraph - woodster

Whoopwhoop - my grammar's c*** and you can't spell - 'gramatically'!

HJ Comments on Average Speed Cameras Telegraph - OG

It sounds counter-intuitive but reducing the limit on congested roads actually improves the flow of traffic. The problem I've found is that in some areas the variable limits seem to be set at 50 mph all the time.

Hate to correct you but it's not sudden braking that causes accidents but the slow braking of the following vehicle.

HJ Comments on Average Speed Cameras Telegraph - dieseldogg

Westpig for Prime Minister, based on his last emininently sensible logically & clearly presented previous post

Hear hear