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Research Reports
Filter by Keyword20 report(s) found with cement in the keywords field Seat belts are a primary motor vehicle safety device. Studies have shown that seat belts not only decrease the likelihood of being injured in a crash, they also save lives (Abdel-Aty, 2003; Yamamoto and Shankar, 2004). Because of this, seat belt use is a primary concern of traffic safety professionals.... Investigations into the effects of the addition of vertically-oriented shear spikes with fiberglass reinforced polymer rods have shown that the shear spikes increased the effective stiffness of the stringers of a full-scale timber bridge chord specimen. This was previously found to be true on dimension... Congestion in Salt Lake City is showing an increasing trend and, as congestion reaches higher levels, benefits of the HOV lanes will also increase. It needs to be determined whether the Salt Lake Valley HOV lanes are performing effectively in terms of travel time benefits, safety and the ability to carry... This research project, "Evaluating and Improving Pedestrian Safety in Utah," was initiated in December 2000. Two interim reports have been prepared thus far, including Facilitation of Pedestrian Crossings in 28 States and Literature Review of Pedestrian Safety Measures (Cottrell 2001) and Literature... This paper summarizes the results of a study on direct assessment of rural user needs in Montana, North Dakota and South Dakota. The objective was to assess rural road users and providers perceptions of rural road needs. Different rural road user groups were identified to obtain a representative sample... The objectives of this research were to determine if fly ash has an effect on the field performance of cement-treated bases, determine if cement-treated bases perform similarly to other base types, and develop pavement performance models for interstate and non-interstate roadways in the state of Wyoming. The present research suggests a new approach to the use of composite materials technology for repair of timber structural members. Due to the small aspect ratio of the typical railroad bridge span timbers, stiffness degradation can be related to decrease in the beam's shear performance. To rejuvenate... In certain regions of the world, designing deep foundations to withstand seismic loading is a reality. Seismic loading of structures and foundations reaches a critical state as a laterally applied force. The response of soils and foundations to repetitive lateral forces is highly complex, relegating... This report documents the findings of the National Peer Exchange on Hours-of-Service (HOS) Compliance that was conducted by a team of state and federal motor carrier safety delegates. It identifies states' best practices in the area of HOS compliance observed during site visits to 11 states during 1996. The objective of this project is to provide local transportation officials with the information required to make sound decisions on the management of the bridges within their jurisdiction. Automated procedures were developed to prioritize the required maintenance, rehabilitation, or replacement (MR&R)... |
