The speaker presented a comparison between the Track
alignment design approach based on NR standards and the one based on the European Norms and the Technical Specifications for Interoperability (TSI), highlighting the main area where these approaches are different and touching the subject of the safety design factors embedded in the track alignment design
The main topics:
Cant parameters definition, the origin of the 11.82 cant constant. ways of applying cant.
Track geometry recording. Quality Standard deviation. Inherent standard deviation. The advantage of using rolling SDs. Quality bands for low and high speed.
Cant over a reverse transition - the orphan rule of lifting the reversing point to improve the quality of riding.
Designing a sudden change in curvature. Virtual transition - TRK2049. The rules of the European Norm for track geometry EN 13803-1&2
The significance of transition shift.