Tenpenny, I respectfully disagree.
I grew up driving on 2 lane highways so I am comfortable with a little snow on the ground.
I'm much happier driving a speed I'm comfortable with than 50 km/hr, particularly when long drives are involved.
And for the record, I've passed somebody doing 40 km/hr on the Canal (a 60 zone) in Ottawa. No harm, and most importantly, no letter.