!!!Serbia: Transportation ||National air transport system|''number of registered air carriers'': 2 \\ ''inventory of registered aircraft operated by air carriers'': 21 \\ ''annual passenger traffic on registered air carriers'': 2,424,886 \\ ''annual freight traffic on registered air carriers'': 2.748 million mt-km (2015) \\ ||Civil aircraft registration country code prefix|YU (2016) ||Airports|26 (2013) ||Airports - with paved runways|''total'': 10 \\ ''over 3,047 m'': 2 \\ ''2,438 to 3,047 m'': 3 \\ ''1,524 to 2,437 m'': 3 \\ ''914 to 1,523 m'': 2 (2013) \\ ||Airports - with unpaved runways|''total'': 16 \\ ''1,524 to 2,437 m'': 1 \\ ''914 to 1,523 m'': 10 \\ ''under 914 m'': 5 (2013) \\ ||Heliports|2 (2012) ||Railways|''total'': 3,808 km \\ ''standard gauge'': 3,808 km 1.435-m gauge (1,196 km electrified) (2014) \\ ||Roadways|''total'': 44,248 km \\ ''paved'': 28,000 km \\ ''unpaved'': 16,248 km (2010) \\ ||Waterways|587 km (primarily on the Danube and Sava rivers) (2009) ||Ports and terminals|''river port(s)'': Belgrade (Danube) \\