This study was conducted to evaluate automated vehicle mounted equipment to collect data on the needs of Oregon's highway inventory. Four vendors accepted invitations to evaluate their equipment. Although ODOT had conducted a similar evaluation in 1997, vendors claimed that improved technology had solved past problems. The evaluation included an assessment of the machines' performance in a survey of pavement condition, road roughness and the ODOT video log program. Because the video log and the road roughness inventories had been already automated (although not combined), the main focus of the evaluation was on the pavement condition rating. Several test sections on the state highway system were selected, including both asphalt and concrete pavements in various stages of wear. A standard value for the condition of these sections was established by a conventional 'walk and look' survey by experienced ODOT pavement unit staff members. Also a survey was made by three rating crews, typically used by ODOT in assessing pavement condition. A comparison was made between the crews' ratings, those of the automated equipment, and the 'ground truth' established by ODOT staff. The analysis of ratings showed that those of the rating crews were closer to the ground truth than the automated equipment ratings were.


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    Title :

    Automated Data Collection Equipment for Monitoring Highway Condition


    Contributors:
    C. Mullis (author) / J. Reid (author) / E. Brooks (author) / N. Shippen (author)

    Publication date :

    2005


    Size :

    138 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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