Use this Official City of Winnipeg app to find your residential street snow zone, as well as info about when your street will be plowed during a residential parking ban. A residential parking ban is called to facilitate the City’s snow clearing response to an extreme snowfall. All residential streets are assigned a snow zone; each snow zone is identified by a letter of the alphabet. Zones are plowed in 12-hour shifts, around-the-clock. Parking is only prohibited on residential streets during