Slow

https://www.honestjohn.co.uk/news/legal-mo...r-quality/ FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

Mind you 2,000 deaths from bad air in Wales may just be this:

https://www.liverpoolecho.co.uk/news/liver...s-13856920 FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

I think that the opening sentence sums it up really "Air pollution is thought to cause more than 2000 deaths in Wales every year "

It would imply no actual facts have been applied to this idea and that it is once again a knee jerk reaction

I'm sure someone with a scientific brain will come up with an answer to counter my thought... but if the same number of vehicles travel along a road, but at a lower speed, they will be spending more time on the section of road in question and therefore leave behind MORE pollution... won't they??

Or put another way - lower the speed limit to 10mph and there'll barely be any pollution at all.  Currently enjoying:
2011 Freelander 2 TD4 XS (SOLD)
2013 BMW X3 20D M-Sport Auto
2007 Jaguar XK 4.2 Coupe

From my very limited knowledge and I am happy to be enlightened, my understanding is that all vehicles have a sweet spot where they run at their most efficient, this used be around 56MPH (on a flat road too I would imagine). Vehicle development has moved on massively in recent years and engines have become more and more efficient, add to that DPF filters, catalytic converters etc then emissions should be better now than ever, even at 70MPH. I would also guess that air disturbance is greater at 70MPH than it is at 50MPH and therefore disperses pollutants better. But I am just a layman so could be talking cobblers

won't slowing that polluting vehicle down, taking it longer to get through Wales than one doing 70mph,

might be offsetting pollution caused by speed, with polluting time taken and end up no different Former Mod/Member, with the most post & Chicken George Arch nemesis

There already speed limits in place on some of those stretches, when was that written?

But then again those muppets in Cardiff Bay will spend 20million on that but at the same time put the M4 relief road straight through one of the worlds best ways to soak up pollution ie. the Gwent Levels, Acres and Acres of Marshland.  If it wasn't so bad it'd be funny.

🐑
Freelander 2 HSE auto 2014 ( Florrie ) ..... Try again.
Freelander 2 GS 2012...... Gone.

 FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

JulesK wrote:

There already speed limits in place on some of those stretches, when was that written?

But then again those muppets in Cardiff Bay will spend 20million on that but at the same time put the M4 relief road straight through one of the worlds best ways to soak up pollution ie. the Gwent Levels, Acres and Acres of Marshland.

I am sure that the M4 is a managed motorway around Newport and the road is quite bendy. Most times I have used it there is normally a speed limit being applied via the sign/camera gantries.

And, I am sure (but may be wrong) that part of the motorway near Port Talbot already has a permanent speed limit applied.
It is also very bendy.

Both these areas are difficult to travel at any speed, so possibly no change here. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 79k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)

I used to know a guy called "Taffy" who ran a garage in North Devon, he originally came from south Wales and used to travel back at Xmas to see his parents. This was before the North Devon link road was opened so that it was a twisty windy trip through lots of villages to get to the M5. He always boasted that by travelling on Xmas morning there would be no police about and he could drive like a maniac. Then one year he got stopped by the police, the policeman said that he had spotted him a couple of years running on Xmas mornings speeding through his village and made a note in his diary to be in wait for him next time. It was an expensive Xmas that year!  3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE

SkyeGuy wrote:

I'm sure someone with a scientific brain will come up with an answer to counter my thought... but if the same number of vehicles travel along a road, but at a lower speed, they will be spending more time on the section of road in question and therefore leave behind MORE pollution... won't they??

Or put another way - lower the speed limit to 10mph and there'll barely be any pollution at all.

If you carry on down this line of thought, you ought to include in your calculation the amount of dirty air / pollutants that your car ingests into the engine while travelling down that road. What happens to those pollutants are they added or subtracted from the total available for you to breath in?

Lets be honest, the government is too scared to ask for more direct tax for the services we all use, so they are always inventing stealth taxes. I feel an extra pollution tax is about to be invented. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 79k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)

Do people want to live forever  If you want to rob a bank buy a shotgun if you want to rob people buy a bank.