 Virtually all of the remaining network is within the confines of the former East Berlin, as all the routes in the former West Berlin were abandoned during the period of the city's partition.However, there have been some extensions of routes across the former border since reunification, most remarkably to the city's new main railway station (lines M5, M8 and M10).BVG operates a network of 149 daytime bus routes serving 2634 stops and a total route length of , together with a night bus network of 63 bus routes serving 1508 stops and a total route length of .