UNI EN 13803-1 : 2010

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Requirements
Annex A (informative) - Supplementary information for
  track alignment design related to shape and length
  of alignment elements progressive system of design
  rules
Annex B (informative) - Length of alignment elements
  (circular curves and straights) between two transition
  curves L[I]
Annex C (informative) - Rules for converting parameter
  values for track gauges wider than 1435 mm
Annex D (normative) - Track alignment design parameter
  limits for track gauges wider than 1435 mm
Annex E (informative) - Track resistance to lateral forces
  generated by the rolling stock
Annex F (informative) - Consequences on track resistance,
  stress and fatigue resulting from tilting body train
  systems
Annex G (informative) - Constraints and risks associated
  with the use of exceptional limits
Annex H (informative) - Recapitulation of the work carried
  out by the ORE B 55 Committee - Maximum permissible
  cant their capability of coping with track twist values
Annex I (informative) - A-deviation Switzerland
Annex ZA (informative) - Relationship between this European
  Standard and the Essential Requirements of EU Directive
  2008/57/EC of the European Parliament and of the council
  of 17 June 2008 on the interoperability of the rail system
  within the Community
Bibliography

Describes the rules and limits that determine permissible speed for a given track alignment.