Question: winter movement

[jivemi]

Originally Posted by Cross

Don't forget that movement often got easier in many situations where the ground was frozen. The mud of a thaw often caused more problems than snow.

regards,
Cross

Yes. So what is the justification for such restrictions on mobility during winter? One might think a clear or lightly snowed hex wouldn't affect tracked or foot movement at all, only moderate snow to snowdrifts. Same for a road, unless it's icy. Or am I missing something? Thanks.