UNI CEN/TR 15874 : 2009

Foreword
1 Introduction
  1.1 Background
  1.2 Objectives of the road test
2 Brief review of the nature and requirements of the new
  standard
  2.1 Longitudinal position of measurement records and
      sample length
  2.2 Lateral position of the measurements on the rail head
  2.3 Processing
3 The measurement programme
  3.1 The test procedure
  3.2 Test sites
      3.2.1 Loriol
      3.2.2 Wildenrath
  3.3 Teams and instruments
4 Comparison of the practices of the teams
  4.1 Choice of lateral position
      4.1.1 Loriol
      4.1.2 Wildenrath
      4.1.3 Conclusion on success of the provisions for
            identifying the reference surface
  4.2 Longitudinal sampling and cleaning the rail head
5 The common analysis applied to the raw data
  5.1 Spike processing
  5.2 DFT and filtering analysis techniques
  5.3 Treatment of long records in which rail-head defects
      are present
  5.4 Chatter/screech
  5.5 Observations made on results presented in Appendices
      A and B
      5.5.1 Loriol
      5.5.2 Wildenrath
  5.6 Overall observations
6 Comparisons of roughness spectra
  6.1 The datum line spectra
  6.2 The 100 m test section results
7 Conclusions
Annex A (informative) - Results from Loriol for all
        instruments processed using the common processing
        method
Annex B (informative) - Results from Wildenrath for all
        instruments processed using the common processing
        method
Annex C (informative) - Review of rail-head defects
        encountered at Loriol
Bibliography

The T.R. defines method to carry out road tests for rail roughness measurements according to prEN 15610:2006.