Automated Pavement Condition Surveys (2019) / Chapter Skim
Currently Skimming:
Pages 25-40
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 25... ...
25 A survey was developed to determine agency practices for automated pavement condition data collection. The survey was provided to all U.S.
|
From page 26... ...
26 Automated Pavement Condition Surveys Figure 12. Agency data collection methods (total responses = 57)
|
From page 27... ...
State of the Practice 27 five agencies indicated that equipment or vendor service costs and additional efforts are needed to assess the impact on pavement condition results as primary reasons for not moving to automated condition surveys. Other responses included agency hesitancy to transition to automated methods (three agencies)
|
From page 28... ...
28 Automated Pavement Condition Surveys collection and data analysis (total of 48 responses)
|
From page 29... ...
State of the Practice 29 automated, or manual) used for a variety of pavement distress types, the frequency of data collection, and the secondary assets assessed during the automated pavement condition survey.
|
From page 30... ...
30 Automated Pavement Condition Surveys nearly equal use of semi- and fully automated analyses for block cracking, potholes, raveling, bleeding, and corrugation. Jointed Plain Concrete Pavement Forty-four agencies indicated the use of JPCP on their highway network.
|
From page 31... ...
State of the Practice 31 9.8 × 9.8-in.
|
From page 32... ...
32 Automated Pavement Condition Surveys As with asphalt pavement and JPCP, there are a number of CRCP condition and distress types that are not distinct to the data analysis method. Semiautomated analysis is used for identifying polished aggregate (two agencies)
|
From page 33... ...
State of the Practice 33 of the agencies conduct pavement condition surveys on non-NHS roadways either annually or every 2 years. For Canadian agencies, the majority (six agencies)
|
From page 34... ...
34 Automated Pavement Condition Surveys Agency Secondary Assets Alberta Shoulder condition. British Columbia Bridges (> 164 ft [50 m]
|
From page 35... ...
State of the Practice 35 over a 2-year period (with an option for a 2-year extension) (British Columbia Ministry of Transportation and Infrastructure 2015)
|
From page 36... ...
36 Automated Pavement Condition Surveys Criteria for field collection and analysis sections are summarized in Table 19. Proposerdetermined pavement distress values are compared to Caltrans-measured values and assessed based on pass/fail criteria.
|
From page 37... ...
State of the Practice 37 • Images must be continuously stitched and each image geo-referenced or location stamped. • Cracks must be measurable by count or length and automatically recorded.
|
From page 38... ...
38 Automated Pavement Condition Surveys Pricing is based on a per lane-mile (kilometer) cost for data collection, highway asset collection, and point cloud hardware; software; and warranty for 16 workstations.
|
From page 39... ...
State of the Practice 39 a consideration in the evaluation process, but not necessarily the sole determining factor in proposer selection (Virginia DOT 2015)
|
From page 40... ...
40 Automated Pavement Condition Surveys the network, this process can be very time-intensive. On larger networks, the use of several DCVs can and has been performed to decrease the time spent collecting data.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.