elektrichka

thumb|ER9 elektrichka in Murom|alt=Green-and-orange electrified train thumb|"Ivolga" (EG2T) on Moscow Central Diameters

An elektrichka ( ; , ) is a Soviet and Eastern bloc commuter (regional) mostly suburban electrical multiple unit passenger train. Elektrichkas are widespread in Russia, Ukraine and other countries of the former Warsaw Pact presenting a socially vital mode of transportation. In 2007, 4085 commuter trains a day (in each direction) were running on the Russian Railways network alone, most of them electric. The first elektrichka train started running on July 6, 1926, along the Baku–Sabunchi line in Soviet Azerbaijan. Also urban (intra-city) gorodskaya elektrichkas and airport's aeroexpresses exist in a few cities of Russia, Ukraine, and Belarus.