Ensure tramsim_vienna.part1.rar , tramsim_vienna.part2.rar , and tramsim_vienna.part3.rar are all downloaded into a single directory.
Note the installation path and version numbers. tramsim_vienna.part3.rar
WinRAR/7-Zip will automatically detect .part2 and .part3 and assemble the full file. Ensure tramsim_vienna
