query: What is the oldest highway in Canada?
passage: Trans-Canada Highway
The Trans-Canada Highway (French: Route Transcanadienne) is a transcontinental federal-provincial highway system that travels through all ten provinces of Canada from the Pacific Ocean on the west to the Atlantic on the east. The main route spans 7,821km (4,860mi) across the country, one of the longest routes of its type in the world.[3] The highway system is recognizable by its distinctive white-on-green maple leaf route markers, although there are small variations in the markers in some provinces.
passage: Numbered highways in Canada
Numbered highways in Canada are split by province, and a majority are maintained by their province or territory transportation department. All highways in Canada are numbered except for three in the Northwest Territories, one in Alberta, one in Ontario, and one in Quebec. Ontario's 7000 series are not marked with their highway number but have been assigned one by the Ministry of Transportation. A number of highways in all provinces are better known locally by their name rather than their number. Some highways have additional letters added to their number: A is typically an alternate route, B is typically a business route, and other letters are used for bypass (truck) routes, connector routes, scenic routes, and spur routes. The territory of Nunavut has no highways.