Slab Track Austria (STA), also known as system ÖBB-PORR elastically supported slab, was jointly developed by the Austrian Railway Corporation (ÖBB) and Allgemeine Baugesellschaft – A. Porr AG. Since 1995 the system is the standard slab track system in Austria and increasingly has been built in Germany since 2001. The oldest section has been in operation since 1989 without maintenance and service costs. STA continues to be demanded and has served successfully on passenger and freight traffic lines and especially on high speed lines.

Arlberg tunnel
Tauern tunnel
Berlin railway station