In service, two rotary engines are often placed back to back to one another in case of an avalanche, so they can return back to their station. To fully power a rotary snowplow, it is hooked up to a B unit behind it which provides the electricity it needs to run. Then, pushing both from the behind is a steam engine.
Today, rotary snowplows are used only in extreme snowfall conditions. Machines like Jordan Spreaders and bulldozers keep up with regular Sierra snowfall. Jordan Spreaders push the snow out of the way instead of chopping it up. But every now and then, the winter storms are so fierce, the Rotary Snowplow is called to battle with the elements.