structural:summarization, information:filtering, quality:corruption, structural:reformatting
Transportation

Belgrade has an extensive public transport system consisting of buses (118 urban lines and more than 300 suburban lines), trams (12 lines), trolleybuses (8 lines) and S-Train BG Voz (6 lines). Buses, trolleybuses and trams are run by GSP Beograd and SP Lasta in cooperation with private companies on some bus routes. The S-train network, BG Voz, run by city government in cooperation with Serbian Railways, is a part of the integrated transport system, and has three lines (Batajnica-Ovča and Ovča-Resnik and Belgrade centre-Mladenovac), with more announced. As of 27 February 2024 tickets may be purchased either via SMS or in physical paper form via the Beograd plus (Serbian Cyrillic: Београд плус) system. Daily connections link the capital to other towns in Serbia and many other European destinations through the city's central bus station.

Beovoz was the suburban/commuter railway network that provided mass-transit services in the city, similar to Paris's RER and Toronto's GO Transit. The main usage of system was to connect the suburbs with the city centre. Beovoz was operated by Serbian Railways. However, this system was abolished back in 2013, mostly due to introduction of more efficient BG Voz. Belgrade is one of the last big European capitals and cities with over a million people to have no metro or subway or other rapid transit system. As of November 2021, the Belgrade Metro is currently under construction, which will have 2 lines. The first line is expected to be operational by August 2028.

The new Belgrade Centre railway station is the hub for almost all national and international trains. The high-speed rail that connects Belgrade with Novi Sad started its service on 19 March 2022. The extension towards Subotica and Budapest is under construction, and there are plans for a southwards extension towards Niš and North Macedonia.

The city is placed along the Pan-European corridors X and VII. The motorway system provides for easy access to Novi Sad and Budapest to the north, Niš to the south, and Zagreb to the west. Expressway is also toward Pančevo and new Expressway construction toward Obrenovac (Montenegro) is scheduled for March 2017. Belgrade bypass is connecting the E70 and E75 motorways and is under construction.

Situated at the confluence of two major rivers, the Danube and the Sava, Belgrade has 11 bridges, the most important of which are Branko's Bridge, Ada Bridge, Pupin Bridge and Gazela Bridge, the last two of which connect the core of the city to New Belgrade. In addition, an 'inner magistral semi-ring' is almost done and includes a new Ada bridge across the Sava river and a new Pupin bridge across the Danube river, which ease commuting within the city and unload traffic from the Gazela Bridge and Branko's Bridge.

The Port of Belgrade is on the Danube, and allows the city to receive goods by river. The city is also served by Belgrade Nikola Tesla Airport, 12 km (7.5 mi) west of the city centre, near Surčin. At its peak in 1986, almost 3 million passengers travelled through the airport, though that number dwindled to a trickle in the 1990s. Following renewed growth in 2000, the number of passengers reached approximately 2 million in 2004 and 2005, over 2.6 million passengers in 2008, reaching over 3 million passengers. A record with over 4 million passengers was broken in 2014, when Belgrade Nikola Tesla Airport became the second fastest growing major airport in Europe. The numbers continued to grow steadily and the all-time peak of over 6 million passengers was reached in 2019.