Like streets, sidewalks are a transportation facility used by the general public. Since the property owner has no control over how well others can traverse their snow/ice covered sidewalk, the City requires sidewalks to be cleared to the pavement within 24 hours after each winter event ends. If a sidewalk is not shoveled and the City is aware of it, DPW is obligated to clear it and charge the property owner for the service. Ordinance citations can also be issued for this issue.
Unlike a sidewalk, driveways are built solely for the benefit of the property owner/resident, not the general public. Each resident is responsible for their own mobility and safety on their own driveway. So the City does not require driveway snow to be cleared from driveways. It is up to the resident to decide if they wish to clear snow from their driveway or just drive over it. The only exception is that the sidewalk section across a driveway must be cleared to the pavement if the property has sidewalks.