The Belgrade trolleybus system forms part of the public transportation network in the city of Belgrade, the capital of Serbia. It is operated by the city-owned public transportation company GSP Belgrade. In 2017, the network consisted of 7 lines, with 125 trolleybuses operating on of two-way overhead wires. Trola, Serbian name for the trolley pole, became the common, colloquial name for the trolleybus among Belgraders.
History Background
The idea of introducing trolleybuses was considered during Interbellum. In the late 1930s, the city's Directory for trams and lights prepared the acquisition of the first vehicles. The intention was to introduce the trolleybus lines which would connect the downtown Belgrade to Karaburma. World War II prevented the realization of this plan but the devastation of the tram infrastructure during the war revitalized the idea of trolleybuses.
1947-1960s expansion
The first trolleybus was presented to the public during the Labor Day parade on 1 May 1947 while the network became operational on 22 June 1947. The first two lines were Kalemegdan-Slavija and Crveni Krst-Slavija, which were soon after joined into one line. Several months later, the extension of the line to Dušanovac was opened. In the 1950s, the general idea was that trolleybuses should take over the major role in the public transportation. By 1955, the number of trolleybuses rose to 42. Envisioned plans included lines to Zemun, Karaburma, New Belgrade and Dedinje, but not all were carried into effect. Line to Zemun was opened in 1956, and in time three lines across the Sava river were formed: Line 14 – Zeleni Venac-Gornji Grad (Zemun) (which was considered a successor line to the pre-war tram line), Line 15 – Zeleni Venac-Novi Grad (Zemun) and Line 16 – Zeleni Venac-Pohorska, New Belgrade.
During this period, trolleybus became part of the Belgrade's sub-culture due to the activity of kešanje (slang for hanging onto something). Instead of entering the vehicle and paying for the ticket, the teenagers and young adults would grab onto the trolley pole on the outside.
1970s decline
Since the late 1960s, city authorities began to consider abolishing the trolleybus network completely. In 1973 all three lines across the river were terminated and by the ending of Branko Pešić’s tenure as the mayor of Belgrade in 1974, only one line survived, Kalemegdan-Kruševačka, Lekino Brdo. It was planned for it to be abolished, too, but already in the mid-1970s, after several types of research, city government changed the opinion and began developing the trolleybus network again.
1980s revitalization
By the early 1980s, new neighborhoods planned to become part of the network were Konjarnik, Miljakovac, Učiteljsko Naselje, Medaković, Banjica, Kumodraž, and Zvezdara. By 1982 trolleybuses reached Konjarnik (Line 19) and Učiteljsko Naselje (Line 21) and the Line 28, connecting Kalemegdan to Zvezdara opened in 1983. In 1985 Line 41 connected Kalemegdan to Banjica II and in 1986 Line 40 was opened between Banjica II and Zvezdara. By the late 1980s, citizens became accustomed to the network and in the 1990s a new trolleybus depot was built in Dorćol, with the capacity of servicing 135 vehicles.
2010s
After new city government took over in 2013, an idea of abolishing the trolleybus network was raised again, partially prompted by the experimental introduction of the electric buses. Due to the possible creation of the pedestrian zone in the entire central section of Belgrade, propositions include the change of the routes in downtown, the relocation of the central terminus from Studentski Trg to Slavija and of the depo from Dorćol to Medaković. The remaining lines should connect the hilly parts of the city: Konjarnik, Medaković, Vračar, Banjica and Kanarevo Brdo. City manager Goran Vesić announced that one single tram line will replace all four trolleybus lines (19, 21, 22 and 29) and the only bus line (31), which traverse through the city's main street Kralja Milana. Regarding reasons, Vesić stated that the overhead lines look ugly in downtown and that citizens complained about the noise made by the trolleybuses. The immediate reaction of the citizens was mostly negative.
However, some of the advantages of the trolleybuses are their minimal noise pollution. Also, there is a matter of price of digging up the entire center of the city so that at least of tram tracks can be placed, and the cost of buying the new trams which will supposedly be operated on capacitors, without the grid. At the moment, five lines pass through the main street 47 times per hour. On average, that is one vehicle on every 86 second, which is virtually impossible with only one line. In May 2017, Prime Minister of Serbia Aleksandar Vučić, even though the Belgrade's city transportation is completely outside of his jurisdiction, stated that he wants to abolish the trolleybus network completely and replace it with the electric buses. As a reason, he said that the trolleybuses are causing problems and that when one stops due to the malfunction, it stops the entire traffic behind it. Though electric buses may be a better solution than the trams, Vučić's reasoning is dubious, just like the Vesić's. Trolleybus has easier traffic avoidance than a tram. Contrary to the trams, which indeed stops all the trams behind when one malfunction because they all use the same tracks when a trolleybus is broken, it is simply unhooked from the grid and is easily bypassed by the trolleybus behind it.
After public protests, the 2013 idea was modified in 2015 and the city announced that the terminus from Studentski Trg will be relocated to the Dunavska Street, extending the trolleybus lines to Dorćol, as a temporary solution. As of July 2019 nothing has been done regarding the trolleybuses relocation. Due to the massive 2018-2019 reconstruction of the Republic Square, some lines were shortened only to the Slavija quare, some were replaced with buses, while some were abolished completely. After continued citizens protests, city administration modified its idea of the large pedestrian zone in downtown and announced that all trolleybuses will be returned to their regular lines in September 2019, after the reconstruction of the square is finished. However, after the square was reopened for traffic on 1 November 2019, lines 21 and 22 remained shortened to the Slavija Square, while lines 19 and 28 were completely abolished due to the "overlapping in the central city zone". But it was also reported that the reduction (it also included several bus lines) is part of the ongoing plan by the city to transform the main traffic route into the pedestrian zone and because of the weight restrictions due to the botched reconstruction of the Republic Square.
Since 2016, both abolition of the trolleybuses and replacement with the electric buses, and purchase of new, modern vehicles which does not require complicated grid, were announced. The Belarus' MAZ was mentioned as a possible partner in this acquisition. City also mentioned possible renovation of the already operational fleet. Replacement of the old vehicles with the new ones was again mentioned in 2018, which was reiterated in the late 2019, when city announced purchase of 40 trolleybuses in 2020. This was postponed due to the COVID-19 pandemic.
In December 2018, Ministry of construction, transportation and infrastructure instigated changes in the Law on Communal Activity, which would allow for private companies to operate trams and trolleybuses, as the present law allows them only to operate city transportation's bus lines. However, deputy mayor Vesić said that city will buy 80 electric buses instead and that trolleybus lines will be shut completely. In October 2019, a scandal broke out when it was reported that some 80 trolleybuses (64%) are not registered (which was discovered by the police in the spring of 2019). GSP general manager was charged, though the company claimed that vehicles have regular technical inspections.
2020s
In April 2021, Belgrade city delegation visited Moscow's tram factory PC Transport Systems. President of the city assembly, Nikola Nikodijević, announced that 154 trolleybuses (with 130 trams) will be purchased by the city until 2033. Though not so publicly, like in the case of line No. 28, residents of the Konjarnik neighborhood also protested the shutting down of the line No. 19. In December 2021, during a meeting with the residents, deputy major Vesić announced the restoration of the line No. 19 for 4 January 2022. He also announced purchase of 80 new trolleybuses, and expansion of the grid in 2022, though the 2022 city budget has no funds allocated for this, so reporters connected statements with the upcoming city elections in April 2022. In the late 2021, due to the old age of the fleet, trolleybuses on line 21 were completely replaced with buses, until "the new trolleybuses are purchased". Trolleybuses would eventually be restored to the line in December 2025. In February 2022 city announced that the process of acquiring 80 new vehicles began, and that plan is to purchase 20 trolleybuses per year in 2023, 2024, 2025 and 2026.
In March 2023, petition was started to extend lines 19, 21 and 22 back to Studentski Trg, as the situation was for decades before 2019. Since then, the commuters had to transfer to other buses and trolleybuses at Slavija Square to reach downtown.
In December 2025, following the completion of reconstruction works in Bulevar kneza Aleksandra Karađorđevića, line 41 was not restored, instead being substituted by the bus line 41A. Reports also surfaced that the line is planned to be fully shut down after New Year. It is believed that this is due to a plan to abolish the left turn from Takovska into Svetogorska, a claim further supported by the fact 41A avoids that intersection, instead turning left at Nikola Pašić Square.
In late April 2026, the city assembly adopted a plan to allow a private operator to establish four electric bus lines, the routes of which would perfectly overlap with the trolleybus lines 19, 21, 22 and 41, as well as the bus line 32. Ivan Banković, of the "Centar" syndicate, warned that this decision could be the city's way of "quietly" shutting down the trolleybus system and privatizing the entire public transport.
Dorćol route
As the city authorities continued with their already heavily criticized project of removing the traffic completely from downtown and conducting it into the neighborhood of Dorćol, they began the construction of the grid. Local residents opposed the idea and blocked the streets. When city sent workers to begin the works on the new grid, the residents physically prevented them. They are opposing the project which will reduce the sidewalks and number of parking spots, cut the trees and induce further traffic jams. City claimed they are doing this because of the wishes of the citizens but never provided any proof of that. After negotiations with the residents, city decided to temporarily halt the works and later announced the partial change of the route.