A break-of-gauge facility at Mockava allows rolling stock to be exchanged between the European standard gauge, 1435 mm (4 ft 8+1⁄2 in), and the 1520 mm (4 ft 11+27⁄32 in) gauge of former satellite states of the Soviet Union.

To speed up though traffic, a track-gauge changing facility operates, which includes the SUW 2000 variable gauge axle system that allows fitted trains to pass through the break of gauge at walking pace.

In 1997, a liquefied gas transfer terminal was introduced at the Mockava station, and in 1999, a bogie exchange machine was installed.

[3] On 23 July 2007, a plaque was unveiled at the station marking the launch of the EU-supported Rail Baltica project.

[4] Finally, on 11 December 2022, for the first time, the international Kraków-Vilnius InterCity train stopped at Mockava station.