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NEW ZEALAND EXPERIENCE IN COMPARING MANUAL AND AUTOMATIC PAVEMENT CONDITION RATING SYSTEMS.
| 题名： | NEW ZEALAND EXPERIENCE IN COMPARING MANUAL AND AUTOMATIC PAVEMENT CONDITION RATING SYSTEMS. |
| 作者： | Cenek-PD; Patrick-JE; McGuire-JF; Robertson-DA |
| 关键词： | CONFERENCES-; NEW-ZEALAND; PAVEMENT-CONDITION; CONDITION-RATING-SYSTEMS; MANUAL-CONTROL; AUTOMATIC-CONTROL; CONDITION-SURVEY; VISUAL-INSPECTION; AUTOMATIC-DATA-COLLECTION-SYSTEMS; PAVEMENT-DISTRESS; RUTTING-; FLUSHING-; SHOVING-; SCABBING-; DATA-QUALITY |
| 摘要： | The purpose of condition rating surveys is to measure and record defects along a section of road in a standard and objective manner. This provides a measure of the condition of each road section, which in turn can be used to assess routine maintenance and rehabilitation needs. In New Zealand, such a survey is presently accomplished by visual walkover on a 10% sample of the road network carried out by trained raters. As part of an effort to continually improve the quality of pavement condition data, a comparative study was undertaken to establish the degree of correlation between walkover survey data and data automatically acquired by the Swedish Road Surface Tester (RST) and Side Force Coefficient Routine Investigation Machine (SCRIM). The principal pavement distress modes of interest were confined to rutting, shoving, scabbing, and flushing. The main conclusion reached was that, although RST and SCRIM have value as survey tools, some form of visual assessment of the actual pavement condition is still required to fully identify surface related defects. In addition, it was demonstrated that for vehicle-acquired condition rating data, particular attention must be paid to selecting appropriate reporting lengths and intervention levels so that they are consistent with both the resolution of the measuring device and the minimum pavement length that justifies resurfacing or shape correction. |
| 总页数： | Conference Title: Third International Conference on Managing Pavements. Location: San Antonio, Texas. Sponsored by: Transportation Research Board |
| 报告类型： | 科技报告 |
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