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There's a scrappage scheme for charities and people on low incomes, but not more generally.
The goal of the scheme is to reduce overall emissions in the zone. Retrofitting old engines to just about pass doesn't necessarily help that goal. Last time I looked at the numbers a big part of the modelled improvement in air quality was from an expected reduction in people driving full stop.
grams-
Does matter to me, but thought there was a scrappage grant scheme for 'small' business too. Then extra if you went for EV. Remember some radio ads but never paid attention.
The changing of engines on PSV/HGV were to get the last bit of commercial life out of them.
Now this is just chat but the point is to reduce the NOx and particulates which are particularly diesel engines, hence buses. So we have all behind a TFL bus, even now, belching out clouds of black smoke. Due to the nature of how buses run, it is very difficult to keep emissions low, so perfect for hybrid diesel/electric. Wonder why there aren't more hydrogen buses.
lynx
That seems odd IMO. As you have the motorbike certification, yes two strokes pass. You could get certification of modifications on commercial vehicles. When the LEZ came in on commercial vehicles on some older PSV it was cheaper to wait till the motor needed work and replacing the engine with a later engine that met emissions regs. No idea what that is like now as the zone emissions have been reduced further.
EDIT: there were incentives for commercial users with in the zone to trade to a newer vehicle was there one for people living in the zone?