Although the UK was not part of the passport-free Schengen area, it nevertheless used the Schengen Information System, a government database used by European countries to store and disseminate information about individuals and goods. This has allowed the UK to exchange information with countries that are part of the Schengen Agreement, often to agree on legal proceedings.  In 2020, the United Kingdom stated that it would withdraw from these agreements at the end of its transition period. In many border crossings, there are special routes for EU, EEA and Swiss citizens (and their family members) and other routes for all travellers, regardless of nationality. From 2015[update], Andorra, Monaco and San Marino negotiated an association agreement with the EU. . . .