To improve the air quality and adapt the inner-city transportation services to meet the growing demand, underground projects are planned and are already being implemented. This includes a new third metro line. It will extend 18 kilometers through Sofia as an east-west link serving 18 stations, running both at ground level as well as underground.
In September 2015, the operator of Bulgaria’s Sofia Metro, MEAD, awarded an order to Siemens AG to supply 20 metro trains. The order included the option for an additional 10 trains, which had been ordered in February 2019.
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