BS EN 13848-4:2011

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
5 Track geometry measuring system fitted on trolleys or
  on manually operated devices
6 Testing of track geometry measuring system
Annex A (normative) - Parameters measured by track
        geometry measuring trolleys (TGMTs) and
        manually operated devices (MODs)
Annex B (informative) - Principles of measurement
Annex C (normative) - TGMT/Description of field tests:
        values to be respected
Bibliography

Describes the minimum requirements that shall be met by measuring systems fitted on track geometry measuring trolleys and manually operated devices to give an evaluation of track geometry quality when measuring one or more of the parameters described in EN 13848-1:2003+A1:2008.

This part of this European Standard specifies the minimum requirements that shall be met by measuring systems fitted on track geometry measuring trolleys and manually operated devices to give an evaluation of track geometry quality when measuring one or more of the parameters described in EN 13848-1:2003+A1:2008. It sets out the acceptable differences from EN 13848-1:2003+A1:2008 when using track geometry measuring trolleys and manually operated devices to measure track geometry.

It applies to all track geometry measuring systems fitted to track geometry measuring trolleys and manually operated devices after the date of implementation of this standard.