|
|
Research Reports
Filter by Keyword12 report(s) found with density in the keywords field The South Dakota Department of Transportation (SDDOT) has identified a need to reevaluate methods in determining whether granular materials have been compacted to the desired density. Practices of other DOTs indicate additional advantages and disadvantages to various in-situ compaction testing devices.... This study developed a number of models to estimate the relationships between land use, transit ridership, household expenditures, and municipal spending, with a focus on small urban areas. First, a regression model was developed that estimated transit ridership in small urban areas as a function of... The built environment consists of everything humanly made, arranged, or maintained (Bartuska and Young 1994). In relation to travel behavior, there has been a focus on improving our understanding of how the built environment influences one's travel mode choice. Planners need evidence showing how land... In this paper existing urban-rural classifications are evaluated to determine their ability to appropriately delineate differences among geographic areas as they relate to personal mobility need and transportation service availability with emphasis placed on the definitional boundary between urban, small... The main objective of this research was to quantify the differences and similarities among Quality Control/ Quality Assurance (QC/QA) programs for three state highway agencies. By measuring these differences, conclusions were drawn as to which state was achieving the best results with their QC/QA program.... The study demonstrated that short lines could achieve greater cost savings if they were to increase their density (revenue ton miles per mile) and their size (mile of road). Size is an important criterion that a short line must examine when evaluating the purchase of a new section of track. However... The purpose of this report is to document a methodology for light-density cost analysis which is used in Phases I and II of the North Dakota Rail Services Planning (RSP) Study, as well as in line rehabilitation projects. The report describes a set of procedures for calculating Class I carrier line-segment... The purpose of this paper is to highlight the scope, functions, and history of the rail analysis process, and to describe two technical publications which detail the methodology and data requirements. The organization structure of railroads in the Upper Great Plains region is rapidly changing. Class I carriers such as the Burlington Northern are selling their branch lines to new rail operators. Line sale, on a significant scale, may affect traditional competitive relationships among railroads and... The purpose of this report is not to analyze the laws and regulations that govern railway labor, or which affect ICC exemption procedures. These are quasi-legal issues which will be settled in the courts, or remanded to the ICC for clarification. The goal of this study is more fundamental in nature... |
