HŽ series 6111
The HŽ series 6111 is an electric multiple unit used by Croatian Railways (), formerly the class JŽ 441 of "ŽTP Zagreb" during the period of Yugoslav Railways. The vehicles were built by Ganz, Hungary (production started in1979). Most of the sets were later modernized by TŽV Gredelj between 2002 and 2015, including both interior and exterior modifications. Between 1992 and 2011, the principal purpose of the units was to serve Zagreb Commuter Rail where they operated exclusively, in addition to some other electrified lines in short to medium distance from Zagreb. By 2023, however, they were entirely  replaced by the HŽ 6112 series on Zagreb suburban lines, so remained limited number of existing 6 111 sets were mostly returned to serve some of the lines on other regional routes across the country. After the electric traction system on the section Moravice - Rijeka - Šapjane (border with Slovenia) was changed from 3 kV to 25 kV in 2012, the 6 111 series was given the opportunity to operate on the lines between Zagreb and Rijeka, as well as on the Rijeka suburban traffic line.