 In addition, the plow blade causes considerable spray of snow on both sides, which can obscure the vision of other road users.A snow sweeper uses brushes to remove thin layers of snow from the pavement surface.Snow sweepers are used after plowing to remove any remaining material missed by the larger vehicles in areas with very low snow-tolerance, such as airport runways and racing tracks, as the flexible brushes follow the terrain better than the rigid blades of snowplows and snow blowers.