@article{ref1,
title="Road condition rating based on factor analysis of road condition measurements",
journal="Transport policy",
year="2007",
author="Ruotoistenmäki, Antti and Seppälä, Tomi",
volume="14",
number="5",
pages="410-420",
abstract="Summarising indices of road condition are used in road maintenance management for aggregating the vast amount of data and for communication purposes. In this paper, a road condition rating based on factor analysis of measured road condition variables is developed to calculate values for an existing or a new condition index. Three factors were extracted from road surface profile and deflection measurements: structural factor, roughness factor and transversal unevenness factor. Factor scores are calculated as the mean of the standardised values of log-transformed variables in each factor. Condition rating, calculated as the weighted sum of the factor scores, is used for maintenance policy evaluation.<p />",
language="en",
issn="0967-070X",
doi="10.1016/j.tranpol.2007.03.006",
url="http://dx.doi.org/10.1016/j.tranpol.2007.03.006"
}