Road condition rating based on factor analysis of road condition measurements

A. Ruotoistenmäki*, Tomi Seppälä

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)410-420
Number of pages11
JournalTransport Policy
Issue number5
Publication statusPublished - Sept 2007
MoE publication typeA1 Journal article-refereed


  • Decision making
  • Factor analysis
  • Policy evaluation
  • Road condition
  • Road maintenance
  • Strategic level
  • Summarising indices


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