Keith Dancey wrote:

NO. It is true of their largest cities: nowhere near the peak traffic flows
of our largest cities.

Had they faced a blizzard conditions in the middle of their rush hour
causing trees to block roads and power failures knocking out traffic
lights, they would have ground to a halt, also.

True. But you miss my point about the traffic density of Scandinavian
cities - comparing the traffic of Stockholm and London is nonsensical
because London has 10 times the population of Stockholm.
Stockholm-Birmingham comparison is closer (Stockholm has a population of
about 750,000, while Birmingham's is about 1,000,000).

And having been stuck in a Swedish traffic jam, I know that traffic
problems exist there as well as here!

Jonathan