Re: The best urban transport
In the parts of the US where I grew up, one could count on a fair number of days with snow in the air and on the ground....those days are not good for bicycle trips.
Yes, and ice is worse. Bicycles have been popular at all the university campuses I've been at in the past couple of decades - all northern states in the Midwest or Plains - and every winter I see cyclists slide on the ice and go down. Haven't seen anyone get seriously injured but it's just a matter of time. And it'd be far too easy to slide into traffic.
Of course, it's also damned difficult just walking when every surface is coated with ice, but at least you're moving slower and not tangled up with a metal frame when you start to slip.
I like to ride my bike on errands around town spring to fall, but November through April it's largely out of the question. And that's half the year. (And I wouldn't dare ride it from home to the university; it's only about seven miles, but most of that is on narrow rural roads with 55mph speed limits. They're dangerous enough with a couple tons of Volvo protecting me.)