Ok, couple of points to make:
The Barcelona low emission zone specifically goes around the port and airport, so shipping is unaffected, other cities will be avoiding ports too.
Spain's cities are the most densely populated in Europe, and as such health problems from pollution are also the most severe. We also have a large number of very old vehicles compared to wealthier nations, which only makes things worse.
Many people who live here are keen to reduce the amount of tourism because it's a poisoned chalice causing a lot of harm for comparatively little benefit - of course, that's not necessarily the case in other cities that are less internationally famous.
From my point of view, this is going to cost me a lot of money but I'm happy to pay it to try and make the world a better place. I'll be scrapping my old Euro2 CBF within the next 2 years and will then use my Euro4 Rieju until I can afford a fully electric bike.
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FreeBSD fan since before it was cool ...
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