Ключевые слова: belgrade, belgrade trolleybus, beograd, beogradski, bus, business, city, city transport company, commute, commuting, company, connect, connection, downtown, drive, driving, dusk, electric, gradsko saobracajno preduzece, gsp, gsp belgrade, gsp beograd, kod konja, line, linija 28, main square, mobility, public, public transport, red, republic square, route, serbia, serbian, srbija, street, sunset, traffic, transit, transport, transportation, travel, trg republike, trola, trolej, trolley, trolleybus, urban, urbanism,