Use of Automated Machine Guidance within the Transportation Industry (2018) / Chapter Skim
Currently Skimming:
Pages 140-150
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 140... ...
NCHRP Project 10-77 140 CHAPTER 12: SUMMARY AND CONCLUSIONS Products developed from this research, including the guidelines and guide specifications can be implemented immediately. State DOTs will primarily implement these products improved AMG workflow processes and through letting of projects with AMG specifications.
|
From page 141... ...
NCHRP Project 10-77 141 AMG WORKFLOW PROCESSES • A set of simplified workflow diagrams and narratives was presented to reflect the spectrum of processes and technologies that are organized according to these topics: - Surveying preparation workflow processes, - Roadway design workflow processes, - Contractor data preparation workflow processes, and - Overall integrated AMG workflow processes. • The accompanying narrative attempts to concisely describe the processes involved with the workflow steps first to establish a baseline for the remainder of the report, and, second, to appreciate that AMG is best positioned to succeed when survey, design, and construction processes are coordinated.
|
From page 142... ...
NCHRP Project 10-77 142 used to implement AMG processes. The survey involved these stakeholders: State transportation agencies, Software vendors, Equipment vendors, and Contractors • The survey covered these topics: Current drafting and design software capabilities, Types of electronic files that are submitted to contractors (such as .dgn, .dwg, .dtm, .tin, and LandXML files)
|
From page 143... ...
NCHRP Project 10-77 143 AMG TRAINING OPPORTUNITIES • Good training programs will be necessary for stakeholders to maintain productivity and accuracy on AMG projects. An especially critical need exists for training on 3D modeling and project control points.
|
From page 144... ...
NCHRP Project 10-77 144 • For a contractor, the most important layers of a 3D model are the existing and proposed surfaces and line work for the proposed facility. Considerable contractor effort can be saved by giving them access to the 3D models developed by designers.
|
From page 145... ...
NCHRP Project 10-77 145 • Sources of errors contributing to the overall AMG accuracy were identified as an outcome from the AMG Workshop and were related to frequency of error, means for detection, and mitigation strategies to overcome the error. Survey outcomes from contractors, vendors, and agency personnel on factors contributing to the overall accuracy of AMG are crossreferenced to the findings from the workshop results.
|
From page 146... ...
NCHRP Project 10-77 146 and number enumerate each line item. The letter corresponds to the first letter of the section header (e.g.
|
From page 147... ...
NCHRP Project 10-77 147 REFERENCES Acharya, B., Fagerman, J., and C Wright, "Accuracy Assessment of DTM Data: A Cost Effective Approach for a Large Scale Digital Mapping Project," International Archives of Photogrammetry and Remote Sensing (IAPRS)
|
From page 148... ...
NCHRP Project 10-77 148 FHWA (2013)
|
From page 149... ...
NCHRP Project 10-77 149 Joseph, W.B., "Surveyors Report: Interesting Times Ahead." The American Surveyor, (Posted February 28, 2007) , http://www.amerisurv.com/content/view/3532/153/ (As of July 16, 2010)
|
From page 150... ...
NCHRP Project 10-77 150 Taylor, B
|
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.