A couple of bits of trivia about todays London.
I walk from Paddington to Marylebone every day on my way to work. The Marylebone road is supposedly the most polluted in Europe. Well clearly the instruments are not calibrated correctly because the worst odour to assault the nostrils come from those smoking. No longer do you go home with grime in your hair and smelly clothes as was the case in the 80's
Another analogy to help understand the not inconsiderable technical advances that have helped achieve this level of clean air. A heavy truck in 1993 when the first Euro1 emission regs came in had an emissions footprint about the size of a football field. Euro 5 level emission vehicles (todays current std) have a footprint the size of a postage stamp. And by the way these heavy engines don't always need particulate filter. Euro 6 becomes mandatory next year further reducing this footprint. US EPA10 regs are tougher still and have been in place since 1/1/10 (Europe has always lagged behind despite the propaganda from the EU and greens)
All this technical advance eventually makes its way into cars, where the restrictions are not so draconian. You could almost say with an EPA10 diesel engine that it is Zero emissions with just water and carbon dioxide coming out the exhaust. Do we hear about these amazing advances, no we get someone trying to kid us all that particulates are killing thousands which is just bull. More particulates enter the atmosphere from tires than from the exhausts.
Now the though I have had, and I worked in the industry for 25 years is, if we reduce emissions further, at considerable cost, and the footprint reduces from a postage stamp to 3/4 of a postage stamp, can we now measure and quantify the benefit to health and the environment. I think not. Have we reached the point of diminishing returns, and would we not be better off using the carrot to encourage the not inconsiderable knowledge bank in pushing for a really significant reduction in fuel consumption, and leave emissions where they are for 10 years. Remember every time we reduce emissions it increases fuel consumption which has to be offset by technological advances. Just a thought.
Edited by user 06 December 2012 23:27:41(UTC)
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