What started as a contemplation over half a year ago is now becoming a reality. Spanish Infrastructure Manager Adif and Ukrainian Railways (UZ) will start cooperating to develop and implement a variable gauge wheel technology, allowing Ukrainian trains to migrate between 1,453mm and 1,520mm gauge tracks fast and effortlessly. “This is another step in UZ’s integration into the European transport network,” said Yevhen Lyashchenko, UZ’s board chairman.