As a bike commuter who rides as far down as 10F (-10C), I can say the cold itself really is the problem. The problem is that for too many routes, either the tra

As a bike commuter who rides as far down as 10F (-10C), I can say the cold itself really is the problem. The problem is that for too many routes, either the traffic is so crazy that if you wipe out on black ice the cars will run you over, (i.e. many, many main streets around Boston) or there is no traffic and you won't be seen (e.g. the Minuteman Trail, where a fucking coy-dog wanted to eat me when I met some black ice.) But on a typical not-quite-main street around Boston, winter biking is easy. There's enough traffic to make sure you will be seen, and it's slow enough you won't be killed.