 In addition, snow blowers can remove snow from the roadway completely, rather than piling it at the side of the road, making passage easier for other road users and preventing the windrow from blocking driveways.Some railroads occasionally use air-blowing machines, each powered by a jet engine, to clear snow from tracks and switches.In addition to physically blowing snow with the force of the air, they melt recalcitrant precipitation with exhaust temperatures over .