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Why is truck regulation so substandard? To enter the metropolitan London area (600 sq miles), HGV’s have to meet stringent pollution standards for particulates

Why is truck regulation so substandard? To enter the metropolitan London area (600 sq miles), HGV’s have to meet stringent pollution standards for particulates and NOx or else they pay £120 a day. Under those circumstances they aren’t a dominant source of pollution. You’re definitely right that wood burning stoves and static plant are big sources, although location of emission is very important, someone using garden machinery intermittently on their own property or a wood burning stove out in the country is mostly polluting themselves, the same can’t be said for a freeway being driven through an urban neighbourhood.

endorphone 8y ago
Passenger cars in North America saw incredible advances in emissions almost entirely courtesy of California, that state spearheading demands to respond to the LA smog crisis that peaked in the 1980s. Other jurisdictions, like my home province of Ontario, just went along with the giant. It's why diesel cars are so rare, and as we know often lied (quite aside from the VW thing, every single instance where a diesel vehicle has been measured under actual use has seen emissions dramatically worse than claimed). Big trucks, however, couldn't make the transition as quickly, and for the necessary torque still rely upon diesel. And they've gotten away with much, much worse, though again California is taking the lead and in the next few years older trucks will be banned from the roads. Regarding the location of particulate sources, I've read that even in London, England, something like 75% of the particulate matter is from outside the city, blown in from farms and rural areas.
- Brakenshire 8y ago
  I was just reading about pollution sources, and you’re right that 75% comes into London from outside, compared to only 20% of NOx. Although levels of PM are double the concentration along roads compared to the background, so there is a local as well as a regional effect.

endorphone 8y ago

Passenger cars in North America saw incredible advances in emissions almost entirely courtesy of California, that state spearheading demands to respond to the LA smog crisis that peaked in the 1980s. Other jurisdictions, like my home province of Ontario, just went along with the giant. It's why diesel cars are so rare, and as we know often lied (quite aside from the VW thing, every single instance where a diesel vehicle has been measured under actual use has seen emissions dramatically worse than claimed). Big trucks, however, couldn't make the transition as quickly, and for the necessary torque still rely upon diesel. And they've gotten away with much, much worse, though again California is taking the lead and in the next few years older trucks will be banned from the roads. Regarding the location of particulate sources, I've read that even in London, England, something like 75% of the particulate matter is from outside the city, blown in from farms and rural areas.

Brakenshire 8y ago
I was just reading about pollution sources, and you’re right that 75% comes into London from outside, compared to only 20% of NOx. Although levels of PM are double the concentration along roads compared to the background, so there is a local as well as a regional effect.