Pavement Management Applications Using Geographic Information Systems (2004) / Chapter Skim
Currently Skimming:
Pages 23-31
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 23... ...
14 CHAPTER THREE INFORMATION SOURCES AND MANAGEMENT This chapter covers the main issues related to PMS data collection, management, and dissemination. The main sources of pavement management information are identified.
|
From page 24... ...
15 use of GPS has many potential advantages in terms of location accuracy and data integration potential, it also creates a significant challenge regarding compatibility with historical data and interoperability with existing location referencing methods. Automated Pavement Data Collection Equipment Many state agencies are using automated equipment to collect pavement condition data needed for pavement management.
|
From page 25... ...
16 rized in NCHRP Synthesis of Highway Practice 301: Collecting, Processing, and Integrating GPS Data into GIS (31)
|
From page 26... ...
17 tially incongruent GPS-collected data and GIS base maps. Map matching, or conflation, modifies an estimated data collection position by assuming that users are always along road networks.
|
From page 27... ...
18 FIGURE 7 Example of pavement condition map.
|
From page 28... ...
19 TABLE 2 MANAGEMENT SYSTEMS THAT CURRENTLY SHARE DATA OR PLAN TO SHARE DATA WITH PMS Currently Share Data with PMS* Plan to Share Data with PMS*
|
From page 29... ...
20 FIGURE 8 Degree of agreement with the statement "Spatial applications facilitate integrating PMS with wider asset management initiatives." CASE STUDIES Because of increased demands for better and timelier information for asset management, data integration efforts, and the possibilities offered by the significant information technology advances in the past decade, many agencies are reengineering their databases. Many agencies are migrating from database systems formerly used, such as hierarchical, usually unrelated, mainframe databases, to more flexible, integrated, or interoperable client-server database architectures.
|
From page 30... ...
21 FIGURE 9 Example of web-enabled GIS application displaying the location of right-of-way images superimposed with the roads and orthophotos layers. references, several route/milepost schemes, various project tracking numbers and structures, and rail crossing identifiers.
|
From page 31... ...
22 work. The best available network databases, as contributed by the local data owners, are amalgamated by the DOT into a single statewide coverage.
|
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.