Belgrade has an extensive public transport system consisting of buses (118 urban lines and more than 300 suburban lines), trams (12 lines), trolleybuses (8 lines) and S-Train BG Voz (6 lines). Buses, trolleybuses and trams are run by GSP Beograd and SP Lasta in cooperation with private companies on some bus routes. The S-train network, BG Voz, run by city government in cooperation with Serbian Railways, is a part of the integrated transport system, and has three lines (Batajnica-Ovča and Ovča-Resnik and Belgrade centre-Mladenovac), with more announced. The BusPlus ticketing system based on contactless smart cards began operating in February 2012. Daily connections link the capital to other towns in Serbia and many other European destinations through the city's central bus station.