High Quality Content by WIKIPEDIA articles! King`s Highway 2A, commonly referred to as Highway 2A, was the designation of five separate provincially maintained highways in the Canadian province of Ontario. Highway 2A was an alternate route to Highway 2 in London, Chatham and Cornwall; these routes were all eventually redesignated. Highway 2A was also a highway that extended from Windsor to Tilbury, which was redesignated as Highway 98 in 1938.