It was an initiative to boost the economy in a rural region where a new motorway rushed through travellers without stopping.

Each city street or rural region has a unique five-digit number.

Extensive land subdivision occurred during the 1960s, transforming the area from a rural region to a metropolitan suburb.

Generally, urban development and industry were insignificant, and the region remained primarily an agrarian rural region throughout the interwar period.

The second letter represents a specific rural region, an entire medium-sized city, or a section of a major metropolitan area.