The Young Researchers Seminar (YRS) is a unique event organised by the YRS Supporting Organisations, ECTRI, FEHRL, FERSI, EURNEX and HUMANIST every two years since 2003. The Supporting Organisations provide financial support for the Seminar, nominate representatives for the Steering Committee and disseminate the calls. The 12th edition of the YRS was hosted by BASt from 3rd to 5th June 2025 at its premises. 32 young researchers from 12 countries and 16 organisations participated. In the preparation phase, they were supported by 13 tutors. This report contains the papers of the young researchers who have agreed to the publication.