Monte Cargo class 461 locomotives are old Yugoslavian locomotives, built in Romania based on technology from Sweden.
Picture from Podgorica, July 2019 by Herbert Graf.

Montenegro state railways Željeznica Crne Gore class 461 locomotive with a short night train.
Picture from Podgorica station 20.9.2019 by Ilpo Ruissalo.

Two Montenegro state railways express trains meeting. The trains were very short, both with just three coaches, but they were very full.
Picture from Podgorica station 20.9.2019 by Ilpo Ruissalo.

Another Montenegro state railways class 461 locomotive.
Picture from Polje near Bar, Montenegro 11.6.2022 by Markku Salo.

Montenegro state railways class 412 train. These trains were built in Riga, Latvia during the Soviet times and in the old Soviet Union these were called ER9.
Picture from Bijelo Polje station 11.6.2022 by Markku Salo.

Another old Montenegro state railways class 412 train, this time a very dirty and graffitied one, is here approaching a street crossing at the village of Šušanj, close to the city of Bar.
Picture from Šušanj, Bar 13.6.2022 by Markku Salo.

This is how the Montenegro state railways class 412 trains nowadays most often look like, old, rotten, noisy, all covered with graffiti. These trains were built by RVR in Riga, Latvia. The first variant, ER9P, was from the year 1961. These trains are from the 1980s.
Picture from Podgorica 13.6.2022 by Markku Salo.

These are the new trains which are to succeed the old Soviet class 412 shown above. These class 6111 trains are built by CAF in Spain. These trains belong to the Civity train family of CAF and they have been delivered to Montenegro since 2013. These trains have a top speed of 120 km/h.
Picture from Podgorica 13.6.2022 by Markku Salo.

Serbian railways class 441 locomotive has brought a train from Belgrade over the border to Montenegro.
Picture from Bijelo Polje station 11.6.2022 by Markku Salo.