I.S. EN 13848-3:2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Track geometry measuring system fitted on track
  construction and maintenance machines
  5.1 General description
  5.2 Environmental conditions
  5.3 Track features input
  5.4 Data localisation
  5.5 Measuring system/device
  5.6 Data processing
  5.7 Data output
  5.8 Data storage
6 Testing of track geometry measuring and recording system
  6.1 Introduction
  6.2 Calibration
  6.3 Validation by field tests
  6.4 Routine validation
Annex A (normative) - Parameters measured by track
        construction and maintenance machine
      A.1 Introduction
      A.2 Track gauge
      A.3 Longitudinal level
      A.4 Cross level
      A.5 Alignment
      A.6 Twist
Annex B (informative) - Principles of measurement
      B.1 General Description
      B.2 Longitudinal level and alignment
      B.3 Track gauge
      B.4 Cross level
      B.5 Twist
Annex C (normative) - Description of field tests: values
        to be respected
      C.1 General
      C.2 Repeatability
      C.3 Reproducibility
Bibliography

Describes the minimum requirements that shall be met by measuring systems fitted on track construction and maintenance machines to give an evaluation of track geometry quality when measuring one or more of the parameters described in EN 13848-1.