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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 12 of 12 for “"Caltrans"”.
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Seismic performance of an I-girder to inverted-T bent cap bridge connection
… for the California Department of Transportation (Caltrans) regarding the seismic response and overall moment capacity of precast I-girder to inverted-T bent cap bridge connections for seismic applications. The current design practice, as outlined by Caltrans' Seismic Design Criteria, assumes that …
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Quantifying Road User Costs with Heterogeneous Value of Motorists' Travel Time
… the California Department of Transportation (Caltrans), and the Bureau of Labor Statistics. With these data, a predictive model was developed using multiple linear regression analysis. Lastly, the model was validated using PRESS statistic. The results reveal that age, annual average daily …
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Quantifying the Impact of Truck Only Lanes on Vehicular Emissions on a Limited-Access Highway
… and present traffic volumes obtained from Caltrans with good results using several validation measures. It was found that CO<sub>2</sub> emissions did decrease between 1998 and 2012 (pre and post lane addition), but this effect was shown to be different for the northbound (uphill) and …
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Seismic Response and Analytical Fragility Functions for Curved Concrete Box-Girder Bridges
… in California, the modern details adopted by CALTRANS along with the current seismic design considerations from SDC (2013) are used to select the representative benchmark bridges. To incorporate the uncertainty in geometrical, structural, and material properties of bridges into the analytical …
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Spatial-Temporal Multivariate Time Series Forecasting Using Graph Neural Networks, with an Application to Traffic Speed Prediction
… using benchmark datasets that we curate from Caltrans Performance Measurement System data. These datasets include detailed traffic speed and flow information across hundreds of sensors in four geographic districts in California, as well as spatial configurations like road networks, Euclidean …
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Performance of the Crack, Seat, and Overlay Rehabilitation Technique for Concrete Pavements in California
… in CS&O sections. Using data collected from Caltrans’ Pavement Condition Reporting Software, performance models were developed based on dependent (distress) variables: alligator cracking, transverse cracking, longitudinal cracking, and International Roughness Index (IRI). And independent …
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Dynamic routing on stochastic time-dependent networks using real-time information
… from the Michigan ITS Center, Traffic.com, and Caltrans PEMS.</p>
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Benefit-Cost Analysis with Nevada Characteristics
… by the California Department of Transportation (Caltrans). The default economic parameters in this model along with the economic parameters assigned by NDOT were used to run analysis on two projects in the state. This was completed to see how suitable Cal-B/C's parameters would be for use in …
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Preliminary Study of Highway Pavement and Materials
… Chapter 3 assessed current conditions of the 14 Caltrans modified-binder seal-coat projects that contained some crumb rubber modification, and to determine their field performance. Field reviews between September and October 2015 found most projects were rated either good or fair. Primary …
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Experimental Studies of Reinforcing Steel and Shape Memory Alloys in Mechanically Spliced Connections for Seismic Application
… the California Department of Transportation (Caltrans) ultimate splice qualifications. Thirty spliced specimens were subjected to static monotonic tensile loading, static cyclic loading, and dynamic monotonic tensile loading. Strain was measured over the spliced bar region. Material modelling …
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Performance and Design of Anchorage Zones for Post-Tensioned Box Girder Bridges
… placement. As part of this study, a database of Caltrans bridges was developed, which included 29 anchorage zones of box girder bridges. Based on this database, it was concluded that the diaphragm reinforcement selection varies substantially between bridges, and seems to be based more on "rules …
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Bus on Shoulder: Local Assessment of Shoulder Transit Lane for Regional Buses in San Luis Obispo County
The study looks at the applicability of integrating a Bus Only Shoulder (BOS) into the intermittently congested segment of US 101 in southern San Luis Obispo County. Policy, infrastructure and implementing criteria derived from case studies in Minnesota, Florida and California (San Diego) and the …