The Tucker Sno-Cat is a tracked vehicle or a family of tracked vehicles for snow conditions.

Different models have been used for expeditions in the Arctic

Arctic

The Arctic is a region located at the northern-most part of the Earth. The Arctic consists of the Arctic Ocean and parts of Canada, Russia, Greenland, the United States, Norway, Sweden, Finland, and Iceland. The Arctic region consists of a vast, ice-covered ocean, surrounded by treeless permafrost...

 and the Antarctic

Antarctic

The Antarctic is the region around the Earth's South Pole, opposite the Arctic region around the North Pole. The Antarctic comprises the continent of Antarctica and the ice shelves, waters and island territories in the Southern Ocean situated south of the Antarctic Convergence...

 during the second half of the 20th century. It differs from other truck-sized snow vehicles, commonly known as Snowcat

Snowcat

A snowcat is an enclosed-cab, truck sized, fully tracked vehicle designed to move on snow. Snowcats are often referred to as 'trail groomers' because of their use for grooming ski trails or snowmobile trails...

s, by its use of four independently mounted sets of tracks.
While the majority of Tucker Sno-Cats utilized 4 sets of tracks, a few experimental models and early production models used 2 sets of tracks.