Annex 2C: ROCOND 371 edge break as there is n predominate severity so the more extreme is recorded. In the third 100m, there is 100m of slight edge break and 20m of Extreme edge break therefore Slight is the predominate severity with a total length of 120m. DEFINITION Horizontal Edge Break is defined as fretting along the edge of a seal or asphalt concrete surfacing and is associated with rutting or erosion of the shoulder in the vicinity of the edge of bitumen. METHOD This component is assessed for both edges for full segment being rated and is assessed from the vehicle. Significant edge break is taken as a loss of seal exceeding 20mm in width. Edge break less than 20mm is not considered in the assessment. Edge break extending into the wheel path is not rated as edge break but rated as a pothole if the unbound layer has been exposed. Severity is rated as the predominant severity distress occurring along the segment. Extent of edge break is calculated by the Data Entry Spreadsheet (DESS) as the total edge length displaying significant (>20mm) edge break (i.e. the length of Slight, Moderate, and Large edge break as measured on both sides of the road equals the “total length of edge break” ) over the total length of edges and expressed as a percentage. DISTRESS SCALES