As of 1 April 2026, the PSJD database will become an archive and will no longer accept new data. Current publications from Polish scientific journals are available through the Library of Science: https://bibliotekanauki.pl
This paper outlines the innovative concept of unconventional railway track on longitudinal sleepers and asphalt track bed. The authors presented a method for LONGASF numerical modeling. This paper describes the creation of the numerical model at the macro scale according to the behavior and interaction of analyzed laboratory sample in a micro scale.