Transit authorities in some cities have reduced or discontinued the use of trolleybuses in recent years, while others, wanting to add or expand use of zero-emission vehicles in an urban environment, have opened new systems or are planning new systems. For example, new systems opened in Lecce, Italy, in 2012; in Malatya, Turkey, in 2015; and in Marrakesh, Morocco, in 2017. Beijing and Shanghai have been expanding their respective systems, with Beijing expanding to a 31-line system operated with a fleet of over 1,250 trolleybuses.