Before Switzerland's integration into the Schengen Area in 2008, Pier F, also known as the French Sector, was used exclusively for passengers arriving from, or departing to destinations in France. It has two gates with jet bridges and four bus gates. The French Sector exists as a stipulation of an agreement between France and the Canton of Geneva dating from the 1960s, and enables travel between the neighboring French region of the Pays de Gex and the airport while avoiding Swiss territory and customs. The French Sector area The airport has a single concrete runway (05/23), which is the longest in Switzerland with a length of 3,900 m (12,795 ft) and one of the longest in Europe, making it open to use by aircraft of all existing sizes. Adjacent to the commercial runway is a smaller, parallel, grass runway for light aircraft. Usually, runway 23 is used when the wind is calm. If the wind is stronger than 4 knots and in a direction going from 320 to 140 degrees, then runway 05 will be used.