Regarding traffic, as a local told me. We can’t get a mortgage for a home but the banks willingly dole out money for cars, hence many families own three cars! So only allow one car per family and to enforce this like in the U.K. and other places support higher taxes on vehicles plus MOT laws.
However, as a tourist, it’s their country, their people and I have no right to dictate what they should or shouldn’t do just fortunate enough to visit a place with so much diversity(a word that seems to be cropping up everywhere these days)