Citation

Ruotoistenmäki A, Seppälä T. Transp. Policy 2007; 14(5): 410-420.

Copyright

(Copyright © 2007, Elsevier Publishing)

DOI

10.1016/j.tranpol.2007.03.006

PMID

unavailable

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.