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Research Reports
Filter by Keyword200 report(s) found with analysis in the keywords field The purpose of this study is to provide information about railroad fuel efficiency that may be useful in evaluating transportation energy policies and assessing the sustainability of potential projects. The specific objectives are to (1) develop railroad energy efficiency models that describe differences... This report describes research performed in coordination with work at the University of Stuttgart, attempting to establish the S-N curve for fatigue loading of notched wood-concrete connections based on low/high-cycle, repeated loading tests. Experimental results are obtained on fourteen 1524 mm span... Rumble strips and rumble stripes are a recommended strategy for crash reduction. The North Dakota Department of Transportation initiated rumble strip use in the 1970s and greatly expanded application of rumble stripes through a statewide initiative in recent years. This study of four intervention and... Agriculture is a leading source of demand for transport resources. It accounted for nearly 1 in 5 ton-miles of highway freight and 1 in 10 ton-miles of rail and barge freight transported in the nation during 2010, and demand is expected to grow. Thus, understanding industry practices and trends related... Alternatives to existing transportation truck escape ramps and crash barriers are examined using arrays of wood, bamboo, and fiberglass structural elements that act as energy absorbers as they deform. The behaviors of each material type are analyzed to determine if they have the necessary potential for... Local rural road travel has the highest injury crash incidence in North Dakota. Crashes on these roads were determined to differ in contributing factors and characteristics when compared to those on other rural roads. Crash data from 2006 to 2010 was studied to quantify factor magnitude in predicting... A survey was conducted of small urban and rural transit agencies regarding their use of alternative fuels and hybrid vehicles. Responses were received from 115 transit providers across the country, including 31 that use biodiesel, eight that use E85, 10 that use compressed natural gas (CNG), four that... SAFETEA-LU contains language indicating that State Department of Transportation (DOTs) will be required to address safety on local and rural roads. It is important for state, county, and city officials to cooperate in producing a comprehensive safety plan to improve statewide safety. This legislation... This study analyzes economies of scale and density as a rationale for subsidizing transit agencies in small urban areas. A long-run cost model is estimated using data from 2006 to 2009 for 168 transit agencies that directly operated fixed-route bus service in small urban areas. Using vehicle revenue... There are 16 small to medium simple span bridges in Larimer County that are currently load rated solely based on visual inspections. Most of these bridges are prestressed concrete bridges. The objective of this project is to load rate these bridges using structural analysis with very little to no information... |
