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Development of Nationwide Road Quality Map: Remote Sensing Meets Field Sensing
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Development of Nationwide Road Quality Map: Remote Sensing Meets Field Sensing
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Journal Article
Development of Nationwide Road Quality Map: Remote Sensing Meets Field Sensing
2021
Overview
In this study, we measured the in situ international roughness index (IRI) for first-degree roads spanning more than 1300 km in East Azerbaijan Province, Iran, using a quarter car (QC). Since road quality mapping with in situ measurements is a costly and time-consuming task, we also developed new equations for constructing a road quality proxy map (RQPM) using discriminant analysis and multispectral information from high-resolution Sentinel-2 images, which we calibrated using the in situ data on the basis of geographic information system (GIS) data. The developed equations using optimum index factor (OIF) and norm R provide a valuable tool for creating proxy maps and mitigating hazards at the network scale, not only for primary roads but also for secondary roads, and for reducing the costs of road quality monitoring. The overall accuracy and kappa coefficient of the norm R equation for road classification in East Azerbaijan province are 65.0% and 0.59, respectively.
Publisher
MDPI,MDPI AG
Subject
