Throughout much of Canada, there are at least two routes designated as part of the Trans-Canada Highway (TCH). For example, in the western provinces, both the main Trans-Canada route and the Yellowhead Highway are part of the Trans-Canada system. Although the TCH, being strictly a transcontinental route, does not enter any of Canada's three northern territories or run to the Canada–US border, the Trans-Canada Highway forms part of Canada's overall National Highway System (NHS), providing connections to the Northwest Territories, Yukon and the border, although the NHS (apart from the TCH sections) is unsigned.