Polskie Koleje Panstwowe (PKP Cargo)
ST44-788+358 with a freight train Bialystok - Warszawa Glowna Towarowa,
and ST44-1112 (blue) with a freight train Kuznica Bialostocka - Miedzylesie

09.07.2014, Bielsk Podlaski

Photo W. Kolins