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MPC Research Reports
View AllA laboratory test program was conducted on full-scale specimens replicating the main elements of a timber trestle railroad bridge chord. Previous field load testing had been done and was complicated by differing site-specific conditions. The purpose of the ongoing laboratory study described is to compare... Voluntary turnover rates among truckload carriers are extremely high, ranging from 50 to more than 100 percent annually. These high turnover rates result in elevated costs for carriers in terms of recruitment and training as well as costs associated with reduced productivity and decreased customer satisfaction... The study examined organizational issues that affected employee motivation and retention. To obtain information about these issues that could be qualitatively analyzed and compared from state to state, face-to-face interviews were conducted with two or three individuals at the Minnesota, Iowa, North... This research investigates moisture susceptibility of asphalt mixes; evaluates the effect of various numbers of freeze-thaw cycles on the mechanical properties of asphalt and determines if the Georgia Loaded Wheel Tester can be used to test for moisture induced damage. Fluctuation in temperatures significantly affects pavement stability and the selection of asphalt grading to be used in pavements. Ability to accurately predict the asphalt pavement temperature at different depths and horizontal locations based on ambient air temperatures will greatly help pavement engineers... A survey of the education and training needs was conducted and more than 2,000 questionnaire booklets were sent to highway contractors nationwide. Two hundred and eighteen responded. The objective of the survey was to determine the training and education needs of the construction industry and identify... This research focuses on real-time congestion monitoring, a unique direction, as most other cities focus solely on freeway operations as they are easier to monitor. Once surface street congestion is monitored successfully, recurring problematic locations can be identified, and solutions can be developed... This study was conducted to identify ITS technologies that transit systems are using, and particularly to aid in the progress of the Welfare to Work Initiative. Two different surveys were used to gather information for this study. First, a survey was developed and administered to identify transit systems... The objective of this report is to develop a profile of the U.S. containerized grain and oilseed export industry, including marketing activities, future expectations, information needs, and business practices. This report forms Phase I in a proposed two-phase analysis of the grain container industry.... State Highway Agencies (SHAs) in the United States use smoothness specifications to insure that they are providing the public with quality roads. Monetary incentives / disincentive policies based on the initial roughness values are used by SHAs to encourage contractors to build smoother roads. To justify... |
