If the lane is kept clear of snow why wouldn't it be in use in the same way sidewalks are? People are out in force on the sidewalks in summer. We don't give use of some of the cement over to cars just because fewer people are using the sidewalk in winter.

Cyclists are citizens, too. They pay for the roads & sidewalks just like motorists and pedestrians do. They deserve the same facilities and consideration. Plow bike lanes just like other facilities and cyclists will be out using their bikes.