The City's snow removal policy places every street into one of four categories based on the street's usage, access and safety. The category determines the priority of when and how streets are treated and cleared. The four categories include: arterial (main streets), collector (streets that lead to arterials), residential (neighborhood streets) and courts. In a plowing event, arterial streets are plowed first. After all the arterial streets are cleared, plows will then work on the collector streets. Following collector streets are residential slopes and residential streets and then courts.