 Russia has 1,216 airports, the busiest being Sheremetyevo, Domodedovo, and Vnukovo in Moscow, and Pulkovo in St. Petersburg.Typically, major Russian cities have well-developed systems of public transport, with the most common varieties of exploited vehicles being bus, trolleybus and tram.Seven Russian cities, namely Moscow, Saint Petersburg, Nizhny Novgorod, Novosibirsk, Samara, Yekaterinburg, and Kazan, have underground metros, while Volgograd features a metrotram.