Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols and abbreviations
   4.1 Symbols and abbreviations
   4.2 Subscripts
   4.3 Notations
5 Rules for determination of the limit gauge
   5.1 General
   5.2 Transverse displacements
   5.3 Vertical displacements
6 Determination of the nominal gauge
   6.1 Introduction
   6.2 Determination
7 Determination of the distance between track centers
   7.1 General
   7.2 Determination of the limit distance between track
        centres
   7.3 Determination of the nominal distance between
        track centres
8 Elements of variable layout
   8.1 Introduction
   8.2 Layout transition
   8.3 Running over a switch and crossing
   8.4 Rules of gauge determination for a line electrified
        by an overhead contact line
   8.5 Determination of the mechanical gauge for the free
        passage of the pantograph
   8.6 Electrical gauge of pantographs
9 Overhead contact wire
10 Rules for building platform edges
   10.1 General
   10.2 Gaps b[lac] and h[lac]
   10.3 Installation dimensions
11 Tilting body vehicles
   11.1 General
   11.2 Transition curves
   11.3 Downgraded modes
12 Track accessories
   12.1 Introduction
   12.2 Contact ramps
   12.3 Active check-rails
   12.4 Planking of level crossings
   12.5 Electrical third rail
   12.6 Rail brakes
13 Determination of structure gauges
   13.1 Selection of the gauge
   13.2 Concepts of a uniform gauge
14 Verification and maintenance of the gauge
   14.1 Structure gauge
   14.2 Distance between track centres
15 Guide for determination of a new gauge from an existing
   infrastructure
16 Dynamic gauge
Annex A (normative) Calculation methodology of the
                    horizontal margin of the structure
                    gauge
      A.1 Scope
      A.2 Formulation
      A.3 Recommendations for coefficients
      A.4
      A.5 Calculation examples
Annex B (normative) Interoperable gauges G1, GA, GB, GB+ and GC
      B.1 General
      B.2 Upper parts - h > 400 mm
      B.3 Lower parts (h <= 0,400 m)
      B.4 Lower parts (h <= 0,400 m) - Tracks for rail brakes
      B.5 Gauge for the free passage of the pantographs
Annex C (normative) Reduced interoperability gauges
      C.1 Gauge G2
      C.2 Gauges GB1 and GB
      C.3 Gauges CPb, CPb+ and CPc
      C.4 Gauge B-M6
      C.5 Gauge F 3.3
Annex D (informative) Example of calculation to determination
                      the gauge on a switch and crossing
      D.1 Introduction
      D.2 Methodology
      D.3 Gauge widening in a curve
      D.4 Quasi-static effect
      D.5 Gauge widening on a switch and crossing
Annex E (normative) Determination of the vehicle characteristics
      E.1 Introduction
      E.2 Methodology
      E.3 Calculation example