The Third Ring Road, or The Third Ring, (; transliteration: Tretye Transportnoye Koltso, or Tretye Koltso, or TTK) is a beltway around central Moscow, Russia, located between the Garden Ring in the city centre and the Moscow Ring Road (MKAD). Route The Third Ring is 35 kilometers (km) in length, i. e. about 10 km in diameter. Lanes varies from three to five. As one of Moscow's main roads, the Third Ring Road suffers from heavy traffic congestion. There is a planned Fourth Ring between the Moscow Ring Road and the Third Ring. The Third Ring can be used to get from areas such as Sokolniki Park to Sparrow Hills, on the other side of the city. The road is used by many Moscovites who live in the suburbs of Moscow to bypass the city centre. The Third Ring Road was completed in 2004 with the Lefortovo Tunnel, the fifth longest urban tunnel in Europe (after the M30 RingRoad tunnels in Madrid at , Blanka tunnel complex in Prague at , Södra länken in Stockholm at , and the Dublin Port Tunnel at ). The Third Ring Road also serves as the main highway access for the Moscow International Business Center (MIBC), a modern high-rise office district located along the western portion of the Third Ring, where it crosses the Moscow River. Limited-Access Highway The limited-access highway sections of the Third Ring Road are located on the northern sections of the beltway. The northern sections can be identified as this type of highway due to its access to adjacent property and many intersections with streets. The section starts east from the interchange with Begovaya Street in the Begovoy District to the Lefortovo Tunnel in the Basmanny District. The Begovaya Street Interchange is a variation of the Directional T Interchange and the Year 1905 Street terminates at this interchange. There are two intersections with Polikarpova Street and Begovaya Street of which they intersect with the beltway and some ramps of the interchange. The beltway later intersects with Begovaya Lane, Botkinskiy Driveway, and Proyektiruemyy Driveway. The Third Ring Road then underpasses the 12-lane Leningradsky Avenue with a variant diamond interchange that includes a few overpasses. The beltway then intersects Petrovsko Razumovskiy Driveway and overpasses Nizhnyaya Maslovka Street, in which the street served as a ramp, bordering the Savyolovsky District in the north. The beltway then intersects Bashilovskaya Street, Raskovoy Street, Nizhny Maslovskiy