The following

highways A highway is any public or private road or other public way on land. It is used for major roads, but also includes other public roads and public tracks. In some areas of the United States, it is used as an equivalent term to controlled-access ...

are numbered 427:

Canada

Manitoba Provincial Road 427 Provincial Road 427 (PR 427) is a short provincial road in the Rural Municipality of Headingley, Manitoba, Canada. PR 427 is informally known as Wilkes Avenue, its former name before Headingley split from the City of Winnipeg in the 1990s. PR ...

Ontario Highway 427 King's Highway 427 (pronounced "four twenty-seven"), also known as Highway 427 and colloquially as the 427, is a 400-series highway in the Canadian province of Ontario that runs from the Queen Elizabeth Way (QEW) and Gardiner Expressway in Toront ...