The new line will significantly improve connections from the city center to Vinohrady and beyond, and ease traffic congestion on Ječná Street and at Karlovo náměstí, and enable connections from Vodičkova Street to Vinohradská, from Masarykovo nádraží to Muzeum, from Náměstí Republiky to the center of Vršovice, and other routes, PID says.