File:Junction with Ontario Highway 403 and 407, Queen Elizabeth Way (QEW), Hamilton, Ontario (29951093176).jpg

King's Highway 403 (pronounced "four-oh-three"), or simply Highway 403, is a 400-series highway in the Canadian province of Ontario that travels between Woodstock and Mississauga, branching off from and reuniting with Highway 401 at both ends and travelling south of it through Hamilton (where it is also known as the Chedoke Expressway) and Mississauga. It is concurrent with the Queen Elizabeth Way (QEW) for 22 km (14 mi) from Burlington to Oakville. Although the Highway 403 designation was first applied in 1963 to a short stub of freeway branching off the QEW, the entire route was not completed until August 15, 1997, when the section from Brantford to the then-still independent Town of Ancaster was opened to traffic. The section of Highway 403 between Woodstock and Burlington was formally dedicated as the Alexander Graham Bell Parkway on April 27, 2016.

The majority of Highway 403 is surrounded by suburban land use, except west of Ancaster, where it passes through agricultural land; Brantford is the only urban area through this section. In Hamilton, Highway 403 descends the Niagara Escarpment, then wraps around the northern side of Hamilton Harbour to encounter the QEW. From there, co-signed with the QEW, it travels straight through Burlington and Oakville, departing from the QEW to the north at the Mississauga–Oakville boundary. The freeway then crosses through the centre of Mississauga in an east–west direction, serving its city centre, before turning north. Highway 403 then ends at Highway 401, but the physical freeway continues north of Highway 401 as Highway 410 to Brampton.

<a href="https://en.wikipedia.org/wiki/Ontario_Highway_403" rel="noreferrer nofollow">en.wikipedia.org/wiki/Ontario_Highway_403</a>