a tradition in snow-clearing equipment for roads, railways and airports, as well as the foundation of the company Øveraasen Snow Removal Systems. Today snow plows are produced by numerous companies around the world and available for different kinds of vehicles such as service trucks, pickup trucks, SUVs and ATVs. They are installed using model specific or universal hardware and mount to the frame of the vehicle to ensure durable connection. There are manual, power and hydraulic operating snow plows. All necessary mounting hardware usually comes in set with a plow. Snow plow blades are available in various sizes depending on a vehicle type. Service trucks usually use a blade sized and more. Common blade size for pickup trucks and full size SUVs is . Smaller ATV snow plow blades are wide. Railway snowplows In many countries, railway locomotives have small snowplows permanently attached to their bogies, which also serve as pilots. With others, the snowplow forms part of the obstacle deflector below the bufferbeam. Bolt-on versions also exist, and these attach to the bufferbeam or front coupler. However, larger snowplows exist, which tend to be conversions rather than purpose-built vehicles. Steam locomotive tenders, large diesel locomotive bogies and various freight vehicles have been used, with the snowplow body mounted on the original frames. They are one-ended, with conventional coupling equipment on the inner end. In Canada purpose built snowplow cars (based on a box car with caboose cab located above and behind the blade) are in use in areas where there is a significant snow fall during winter periods (especially in Western Canada, Newfoundland and Northern Ontario). These cars were influenced by the Russell Plow from the United States and used in Canada in the 1880s. Most of the Russell type plows have been retired for smaller custom built railplow or snow blades attached to hopper cars or locomotives. Conventional operation may see one or two locomotives running together with a snowplow at either end. This enables a snow clearance train to reverse direction quickly if it gets stuck. Alternatively, a single locomotive with bogie plows can act as a self-propelled snowplow by running light engine. VIA Rail, among other railways, has integrated plow blades with the front pilots of their locomotive fleet to clear thinner accumulations of snow as trains run. Self-propelled on-track steel and rubber tired "Hy-Rail" equipment can also be employed to remove snow from railroad tracks.