A22

A22 is a road designation used by several national road networks to denote major routes. Because road numbering conventions differ by country, the exact route and characteristics of an A22 can vary significantly.

In the United Kingdom, the A22 is a trunk road in Southeast England, running from the London area toward the south coast. It passes through suburban and rural areas and provides an important link between Greater London and East Sussex towns along the route.

In Portugal, the A22 is the Via Infante de Sagres, a major toll motorway along the Algarve region. It runs from Lagos in the west to Vila Real de Santo António at the Spanish border, and forms a principal east–west corridor for the southern coast, connecting several coastal towns and resorts.

Other countries may designate roads as A22 as well, but routes differ and some nations may not use the A-prefix for national routes. When encountering A22 in maps or signage, the local country context is essential to determine the exact alignment and road type.