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BS EN 13036-8:2025 - TC Tracked Changes. Road and airfield surface characteristics. Test methods - Determination of transverse unevenness and crossfall indices, 2025
- A-30459171.pdf [Go to Page]
- undefined
- European foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols and abbreviated terms
- 5 Pre-processing of the transverse profile [Go to Page]
- 5.1 General
- Figure 1 — Description of the terms sampling interval, acquisition repetition interval and reporting repetition interval [Go to Page]
- 5.2 Transverse profile measured with a traffic speed profilometer
- Figure 2 — The expanded and mirrored transverse profile, prepared for filtering. The orange profile is the original profile. The blue expansion is the mirroring
- 6 Computation of indices [Go to Page]
- 6.1 General
- 6.2 Rut depth indices [Go to Page]
- 6.2.1 General
- Figure 3 — Overview of different rut depth indices [Go to Page]
- 6.2.2 The Sliding Wire Rut Depth method (RSW)
- Figure 4 — Sliding wire rut depth calculated at a 3,2 m wide transversal profile, RSW2,0 = s6 [Go to Page]
- 6.2.3 The Total Transverse Unevenness method (RTTU)
- Figure 5 — Total transversal unevenness calculated at a 3,2 m wide transversal profile, RTTU3,2 = s13 [Go to Page]
- 6.2.4 The Left and Right Rut Depth method (RL and RR)
- Figure 6 — Rut depth calculated at a 3,2 m wide transversal profile, RR1,9 = s5 [Go to Page]
- 6.3 Other transverse indices [Go to Page]
- 6.3.1 General
- 6.3.2 Ridge Height (RH)
- Figure 7 — Ridge height calculated at a 3,2 m wide transversal profile, RH = s6 [Go to Page]
- 6.3.3 Indices for water in ruts [Go to Page]
- 6.3.3.1 General
- 6.3.3.2 Theoretical water depth left and right (WDL and WDR)
- Figure 8 — Example of theoretical water depth at the left and right side of the transverse profile [Go to Page]
- 6.3.3.3 Theoretical sum of water area left and right (WAL and WAR)
- Figure 9 — Example of theoretical sum of water area at the left and right side of the transverse profile [Go to Page]
- 6.3.4 Miscellaneous transverse indices
- 6.4 Crossfall index (CFR)
- Figure 10 — Used part of the transverse profile defined from automatically detected lane width
- Figure 11 — Crossfall calculation at narrow roads
- 7 Measurement devices and their application [Go to Page]
- 7.1 Measurement devices
- 7.2 Lateral positioning
- 8 Accuracy [Go to Page]
- 8.1 General
- 8.2 Resolution of presented indices
- 8.3 Precision
- 8.4 Bias
- 9 Safety
- 10 Report for project level measurements
- Annex A (informative) Measurement of indices of transverse unevenness and irregularities with a straightedge
- A.1 Measuring using the straightedge
- A.1.1 General
- A.1.2 Sampling frequency, covered measurement/analysis width
- A.1.3 Method of measurement
- A.1.3.1 Method of measuring rut depth (R, RL and RR)
- Figure A.1 — Rut depth measured in left and right wheel track with a straightedge (maximum rut depth at RL and RR)
- A.1.3.2 Method of determining ridges (RH)
- Figure A.2 — Ridge height measured with a straightedge (RH)
- A.2 Reporting of results
- Annex B (informative) The use of transverse indices
- Table B.1 — Different transverse indices and usage
- Annex C (informative) Implementation guide
- Annex D (informative) Evaluating and using the transverse indices
- Annex E (informative) Other transverse indices
- E.1 General
- E.2 Crossfall line (CFL)
- Figure E.1 — Crossfall line, the crossfall is defined as the slope of the line through the outer points of the transverse profile. The picture explains the situation for right-hand traffic
- E.3 Edge slump (ES)
- Figure E.2 — Principle of calculating the edge slump. The picture explains the situation for right-hand traffic
- E.4 Distance between rut bottoms (DRB)
- Figure E.3 — Principle of calculating the distance between rut bottoms
- E.5 Rut width, left and right (RWL, RWR)
- Figure E.4 — Principles for calculating rut width
- E.6 Rut area, left and right (RAL, RAR)
- Figure E.5 — Principles for calculating rut area
- Bibliography [Go to Page]
