In 2002, Serbia and Montenegro had 4,059 km (2,522 mi) of railroads, including 1,377 km (856 mi) of electrified track. Railways connect Belgrade with Budapest and Zagreb. The Belgrade-Bar line links Serbia to Montenegro and terminates at the Adriatic Sea. Rail service is provided by locomotives manufactured in the 1950s and 1960s.
Road length totaled 48,603 km (25,230 mi) in 2002, of which 28,822 km (17,910 mi) were paved, including 560 km (348 mi) of expressways. While the freeway between Belgrade and Zagreb is officially open, the lack of normal relations between Serbia and Montenegro and Croatia has kept commercial traffic on the highway to a minimum. In 2000, there were 2,694,700 passenger cars and 287,400 commercial vehicles in Serbia and Montenegro.
The Danube, Sava, and Tisa are important commercial rivers, with ports at Belgrade, Novi Sad, Sabac, Pancevo, Smederevo, and Prahovo. Serbia's river fleet has the second largest transport capacity in Europe. The merchant marine fleet consisted of 1 Montenegrin ship in 2002, totaling 2,437 GRT.
There were 46 airports (Serbia 43, Montenegro 5) in 2001, of which 19 had paved runways. Yugoslav Aero Transport (YAT) operates from Belgrade. YAT is considering upgrading its aging fleet for European destinations. Passengers carried on scheduled domestic and international flights in 2001 were 1,116,600.