The photo has been taken during ES64U4-D homologation tests in Poland. The following night a new Polish high speed record for locomotives was set. The "Husarz" locomotives 183 601 and 183 602 and three cars did this on the 36 km long track section between Psary and Góra Włodowska of the Centralna Magistrala Kolejowa. This Central Railway Route is the only high speed rail line in Central-Eastern Europe. It's length is 223 km, built in 1971 - 1977, and it links Warsaw with Kraków and Katowice. The new record was set on 235 km/h.