There have been or have there been projects for Lithuania-Russia, Poland-Belarus, Bulgaria-Serbia and Bulgaria-Northern Macedonia on cross-border transport.  The agreement between Poland and Belarus was due to enter into force in 2012, but was delayed by Belarus without a transposition date (october 2012).  Currently, the Schengen Member States are 26 nations. Most are also part of the EU (European Union), others are not. On this page you will find useful information on the Schengen area, including: of the 27 EU Member States, 22 are participating in the Schengen area. Of the five EU Member States that are not part of the Schengen area, four – Bulgaria, Croatia, Cyprus and Romania – are legally required to join the territory in the future, while the other – Ireland – maintains an opt-out. The four member states of the European Free Trade Association (EFTA), Iceland, Liechtenstein, Norway and Switzerland, are not members of the EU, but have signed under the Schengen Agreement. Three European micro-states that are not members of the European Union, but which are enclaves or half-enclaves within an EU member state – Monaco, San Marino and Vatican City – are de facto part of the Schengen area. Since the creation of the European Community in the late 1950s, EU countries have consistently sought to remove barriers to trade in goods and travel between different countries. The Schengen Agreement and the creation of the Schengen area are the result of these ongoing attempts.
Autonomous countries within the Kingdom of the Netherlands Vatican City has an open border with Italy. In 2006, it expressed interest in joining the Schengen Agreements with a view to closer cooperation on the exchange of information and similar activities under the Schengen Information System.  Exceptionally, Italy allowed people to visit Vatican City without being accepted for an Italian visa, and then to be escorted by police between the airport and the Vatican or by helicopter. [Citation required] However, there is no customs union (including customs) between Italy and the Vatican, so all vehicles are controlled at the Vatican`s borders. The Schengen area originally had its legal basis outside the European Economic Community at the time, since it was created by a subgroup of Community Member States with two international agreements: remember that the number of days during which you are allowed to stay in Schengen countries is getting shorter, while the validity of your visa is longer. Be careful not to survive your visa and the number of days you can stay. If you do so, you risk fines or even a ban on the Schengen area. The agreement removed the common border controls of signatories within the zone, allowing individuals to travel freely within the zone. It gives residents of border areas the freedom to cross the borders of fixed checkpoints and has harmonized visa policy, meaning you can get a Schengen visa for short stays of less than 90 days. Under the Schengen Agreement, travel from one country to another within the Schengen area is done without border controls.