Editing Snow (section)

====Rail====
Railroads have traditionally employed two types of snow plows for clearing track: the [[wedge plow]], which casts snow to both sides, and the [[rotary snowplow]], which is suited for addressing heavy snowfall and casting snow far to one side or the other. Prior to the invention of the rotary snowplow ca. 1865, it required multiple [[locomotive]]s to drive a wedge plow through deep snow. After clearing the track with such plows, a "flanger" is used to clear snow from between the rails that are below the reach of the other types of plows. Where icing may affect the steel-to-steel contact of locomotive wheels on track, abrasives (typically sand) have been used to provide traction on steeper uphills.<ref>
{{cite book
 | last = Bianculli
 | first = Anthony J.
 | title = The American Railroad in the Nineteenth Century – Cars
 | publisher = University of Delaware Press
 | series = Trains and Technology
 | volume = 2
 | date = 2001
 | location = Dover
 | page = 170
 | url = https://books.google.com/books?id=2fh0H0USx-0C&pg=PA170
 | access-date = December 2, 2016
 | isbn = 978-0-87413-730-9 }}</ref>

Railroads employ [[snow shed]]s—structures that cover the track—to prevent the accumulation of heavy snow or avalanches to cover tracks in snowy mountainous areas, such as the [[Alps]] and the [[Rocky Mountains]].<ref>{{cite web
 |url         = http://www.fao.org/docrep/x5376e/x5376e04.htm
 |title       = Avalanche and torrent control in the Spanish Pyrenees
 |last        = FAO
 |first       = Staff
 |website     = National Forests Organization of Spain
 |publisher   = Patrimonio Forestal del Estado
 |access-date = December 1, 2016
 |url-status=live
 |archive-url  = https://web.archive.org/web/20150924140432/http://www.fao.org/docrep/x5376e/x5376e04.htm
 |archive-date = September 24, 2015
 |df          = mdy-all
}}</ref>
<gallery caption="Snowplows for different transportation modes" mode="packed" heights="150px">
File:TowPLow front view2.JPG|Trucks plowing snow on a highway in [[Missouri]]
File:Winter Operations @ Brussels Airport January 2013 (8387468508).jpg|Airport snow-clearing operations include plowing and brushing
File:RhB ABe 8-12 Allegra mit Spurpflug bei Ospizio Bernina.jpg|Swiss low-profile, train-mounted snowplow
</gallery>