Alberta Provincial Highway No. 1A is the designation of two alternate routes off the Alberta portion of Trans-Canada Highway 1. However, it is not the only name used for spurs off Highway 1 - Highway 1X is another such designation. Despite these highways being suffixed routes of Highway 1, they are not part of the Trans-Canada Highway network, and are signed with Alberta's provincial primary highway shields instead of the Trans-Canada shields used for Highway 1. Bow Valley Parkway The Lake Louise to Banff section of the Banff National Park 1A route is also known as the Bow Valley Parkway. It begins at Highway 1 at Lake Louise, generally paralleling it until it meets Highway 1 again approximately west of Banff. It provides more immediate access to attractions in Banff National Park such as Castle Mountain and Johnston Canyon. This spur has a reduced speed limit of , and provides opportunities to view wildlife at various times of the year. Parks Canada introduced planned and marked pullovers along the route to enhance and educate visitors about the region. The Bow Valley Parkway is one of only two parkways between Lake Louise and Banff, and the only one that allows views of the mountain scenery, waterfalls, and various view points of the nearby rivers and creeks. It was the original highway that connected the valley and is advertised as a "year-round scenic heritage experience". Parks Canada enacted seasonal travel restrictions along the Bow Valley Parkway on a segment between the Johnston Canyon Campground and the Fireside Picnic Area (adjacent to the Highway 1 eastern junction). From March 1 to June 25, travel is not permitted between 8 p.m. and 8 a.m. in order to protect wildlife. Highway 1 can be used as an alternate route. In 2022, Parks Canada announced a three-year pilot project that would see the 17-km eastern portion of the Parkway, between the eastern junction with the Trans-Canada Highway and Johnson Canyon, closed to all vehicular traffic, except for bicycles, between March 1 and June 25, and from Sept. 1 to 30. Major intersections Starting from the west end of Highway 1A: Bow Valley Trail The second of the 1A routes, known as the Bow Valley Trail, begins in Canmore, off of the Trans-Canada Highway at exit 91. It formerly began at the Trans-Canada Highway at exit 86 and passed through Canmore; however, ownership of the section was