[jkaljundi]

Tractors and snowplows. Salt kills the bicycles and salty slush is much worse to drive in. Hard packed snow is actually the best to ride on.

Interestingly Oulu bike roads clearing contract states the company doing the snowplowing can do inspections only on bicycles, not cars :)

[nicehill]

Maybe hard packed snow is a strategy for only flat cities

Seattle infamously tried the hard packed snow strategy about a decade ago, and it turned it into a dangerous (hilly) ice rink

[avianlyric]

There's a difference between riding on hard pack with a bike, and driving a car over it. I have no idea why you think an experiment with hard-pack snow on automotive roads is in anyway indicative of what works on cycle lanes.

[nicehill]

Hard pack on a hill doesn't seem to make sense for bicycles either