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A comment on London Ultra Low Emission Zone cuts toxic air pollution by a third. Parent comment

Re:London Ultra Low Emission Zone cuts toxic air pollution b... by pwagland on Tuesday October 22, 2019 @08:10AM (#21322704)
Do you have a source for that? Dropping that age limit from 15 to 12 years would obsolete about 20% of the fleet overnight, since the age spread of the cabs is fairly linear.
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Re:London Ultra Low Emission Zone cuts toxic air pollution b... by tialaramex on Tuesday October 22, 2019 @10:20AM (#21323859)
https://tfl.gov.uk/info-for/taxis-and-private-hire/emissions...

So it isn't overnight, it's gradual, it will accelerate fleet replacement significantly, but not 20% of the fleet overnight.

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