Highway 1 is the Saskatchewan section of the Trans-Canada Highway mainland route. The total distance of the Trans-Canada Highway in Saskatchewan is . The highway traverses Saskatchewan from the western border with Alberta, from Highway 1, to the Manitoba border where it continues as PTH 1. The Trans–Canada Highway Act was passed on December 10, 1949. The Saskatchewan segment was completed August 21, 1957. The speed limit along the majority of the route is 110 kilometres per hour (70–mph) with urban area thoroughfares slowing to a speed of 90–100 kilometres per hour (55–65 mph). Portions of the highway—the section through Swift Current, an 8-kilometer section east of Moose Jaw, and the Regina Ring Road—are controlled-access. Highway 1 serves as a major east-west transport route for commercial traffic. It is the main link between southern Saskatchewan's largest cities, and also serves as the province's main link to the neighbouring provinces of Alberta (to the west) and Manitoba (to the east).