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Research Reports
Filter by Keyword47 report(s) found with impacts in the keywords field Soils are an important component of any transportation structure. To improve the engineering properties of these soils, compaction requirements are included in virtually all transportation construction specifications. Field observations indicate however, that soils at near-freezing temperatures may require... The Carrington-to-Turtle Lake rail line serves five agricultural shippers in a four-county area in central North Dakota. Service on the line has been affected by recent embargoes, floods, and poor, deteriorating track conditions. The line is a strong candidate for abandonment as efforts to rehabilitate... This project has investigated the performance of the admixtures during and after leaching has occurred. This report presents information in two main areas of investigation. The first is a soil column study to determine downward, one-dimensional solute transport properties and trends of the admixtures... This paper reports the results of a survey designed to determine the issues affecting North Dakota's rural aviation community. The survey elicited responses from airport managers on the broader concerns of aviation in the state. Through deregulation, the railroad industry has rationalized its services across the nation. Since 1980, this has lead to the abandonment of over 33,000 miles of rail line in the United States. While this has improved the efficiency and financial viability of rail carriers, it has adversely affected... This report describes a research project conducted at Colorado State University to evaluate the relative effectiveness and environmental impact of road dust suppressants. The objectives were to develop a device that would provide a standard, quantitative and precise method of measuring dust from unpaved... The Wyoming loop tour program, as evaluated in this study, involved two components. One component dealt with the location criteria and an evaluation of the existing loop tours which is contained in a companion report, MPC 94-29. Included in this study is a discussion of models used in determining economic... This project is ongoing at Colorado State University to study road dust suppressants with the objective of measuring the relative effectiveness in this semi-arid region as well as any water quality degradation resulting from this usage. Five test sections are being evaluated in this research project... This paper reviews an in-depth study of eastern Washington railroad needs, examines the characteristics of regional railroads from Washington to North Dakota and, finally, develops some benefits associated with use of regional railroads. This report describes a study conducted at the University of Wyoming to evaluate the various factors affecting the accuracy of Road Profilers measurements. Highway agencies across the U.S. use Road Profilers to measure roughness and rut-depth characteristics of pavements. These measurements are utilized... |
