Pan-Kadersaryinan Highway System

The Pan-Kadersaryinan Highway System is a highway system completed between 1957 and 1981 in the Kadersaryinan Islands, and later extended between 2009 and 2014.

Originally the system was developed independently of the UKF satellite states and was a Kadersaryinan-exclusive development, however it was soon extended out to Daricajuce and eventually across the islands.

As the pan-Kadersaryinan highways run along national highways, any country has the option to close its part of a route to travellers from other countries, forcing those who use it to find an alternative route. Many did so during the COVID-19 pandemic. Other parts require ferries between one highway and another.

Disruption from natural weather can also render the highway inaccessible, so the Pan-Kadersaryinan Highway Authority (PKHA), to which all countries directly served by the highway contribute, has the right to close any part of the highway unilaterally, and is also in charge of both mediating multinational disputes between countries who are served by the highway. Governments cannot leave the PKHA's control without closing the highway, as a guarantee against states simply leaving.

There are seven highways on the system going west to east in numerical order, from K1 in Kadersaryina to K7 in Sialeh. The exception is K8 in Crataglsis, which was built after K7 in 2014.