Original sentence: The highway, designated as Highway 1 in the four western provinces, begins in Victoria, British Columbia and passes northward along the east coast of Vancouver Island for 99 km to Nanaimo; a 57 km-long ferry route (see BC Ferries) connects the highway to West Vancouver, whence it passes through the Vancouver metropolitan area, heading 170 km east to Hope, then turns north for 186 km toward Cache Creek, then east for 79 km through to Kamloops, then 483 km east to Banff, 101 km to Calgary, 293 km to Medicine Hat, 403 km east to Moose Jaw, 79 km to Regina, 372 km to Brandon, 119 km to Portage La Prairie, and 84 km east to Winnipeg
Edited sentence: The highway, designated as Highway 1 in the four western provinces, begins in Victoria, British Columbia and passes northward along the east coast of Vancouver Island for 99 km to Nanaimo; a 57 km-long ferry route (see BC Ferries) connects the highway to West Vancouver, whence it passes through the Vancouver metropolitan area, heading 170 km east to Hope, then turns north for 186 km toward Cache Creek, then east for 79 km through to Kamloops, then 483 km east to Banff, 101 km to Calgary (to the chagrin of numerous drivers the highway goes directly through the city and thus they must put up with bumper-to-bumper traffic; in 2005, the city began construction of a major upgrade to this part of the roadway intended to improve traffic flow), 293 km to Medicine Hat, 403 km east to Moose Jaw, 79 km to Regina, 372 km to Brandon, 119 km to Portage La Prairie, and 84 km east to Winnipeg