EN 13848-1:2003+A1:2008

Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
  3.1 Terms and definitions
  3.2 Symbols and abbreviated terms
4 Principal track geometric parameters
  4.1 Description of the track co-ordinate system
  4.2 Track gauge
      4.2.1 Definition
      4.2.2 Measurement method
      4.2.3 Wavelength range
      4.2.4 Resolution
      4.2.5 Measurement uncertainty
      4.2.6 Range of measurement
      4.2.7 Analysis method
      4.2.8 Output requirements
      4.2.9 Output presentation
  4.3 Longitudinal level
      4.3.1 Definition
      4.3.2 Measurement method
      4.3.3 Wavelength range
      4.3.4 Resolution
      4.3.5 Measurement uncertainty
      4.3.6 Range of measurement
      4.3.7 Analysis method
      4.3.8 Output requirements
      4.3.9 Output presentation
  4.4 Cross level
      4.4.1 Definition
      4.4.2 Measurement method
      4.4.3 Wavelength range
      4.4.4 Resolution
      4.4.5 Measurement uncertainty
      4.4.6 Range of measurement
      4.4.7 Analysis method
      4.4.8 Output requirements
      4.4.9 Output presentation
  4.5 Alignment
      4.5.1 Definition
      4.5.2 Measurement method
      4.5.3 Wavelength range
      4.5.4 Resolution
      4.5.5 Measurement uncertainty
      4.5.6 Range of measurement
      4.5.7 Analysis method
      4.5.8 Output requirements
      4.5.9 Output presentation
  4.6 Twist
      4.6.1 Definition
      4.6.2 Measurement method
      4.6.3 Wavelength range
      4.6.4 Resolution
      4.6.5 Measurement uncertainty
      4.6.6 Range of measurements
      4.6.7 Analysis methods
      4.6.8 Output requirements
      4.6.9 Output presentation
5 Measurement conditions
Annex A (informative) Measurement of acceleration
        A.1 Introduction
        A.2 Measurement method
        A.3 Frequency range
        A.4 Range of measurement
        A.5 Sampling frequency
        A.6 Measurement conditions
        A.7 Analysis method
        A.8 Output requirements
        A.9 Output presentation
Annex B (informative) Other Parameters
Annex ZA (informative) Clauses of this European Standard addressing
         essential requirements or other provisions of EU Directives

This European Standard specifies the requirements for the homologation of track geometry quality parameters as measured by various measuring devices fitted on track recording vehicles. These measuring devices are described in Part 2 of the standard. This European Standard applies to all track geometry parameters including track gauge, longitudinal level, alignment, cross level (cant / superelevation) and twist. It defines each parameter and specifies the requirements for measurement, the analysis methods and the presentation of results. Parts 3 and 4 give a description of measuring devices complying partially with this Part 1 according to the specificities of respectively track construction and maintenance machines, and manual and lightweight devices.