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  • Demonstration of Integrated Pervious Pavement System for Management of Stormwater Quality and Quantity
    Demonstration of Integrated Pervious Pavement System for Management of Stormwater Quality and Quantity Researcher s Principal investigator LaDon Jones 515 294 0641 lcjones iastate edu Iowa State University Co principal investigators Paul Wiegand 515 294 7082 pwiegand iastate edu Vern Schaefer 515 294 9540 vern iastate edu Muhannad Suleiman 515 294 6076 suleiman iastate edu Project status Completed Start date 04 01 05 End date 11 30 06 Sponsor s

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1141472327 (2015-11-09)
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  • Iowa DOT ITS Operations Manual
    principal investigator Research by sponsor Research by keyword Project pages maintained by PI Search research CTRE is an Iowa State University center administered by the Institute for Transportation Address 2711 S Loop Drive Suite 4700 Ames IA 50010 8664 Phone 515 294 8103 FAX 515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Iowa DOT ITS Operations Manual Researcher s Principal investigator

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=2118603087 (2015-11-09)
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  • Nondestructive Evaluation of Iowa Pavements, Phase 1
    Researcher s Principal investigators Halil Ceylan 515 294 8051 hceylan iastate edu Iowa State University Student researchers M Birkan Bayrak Alper Guclu Project status Completed Start date 06 01 04 End date 11 30 06 Publications Report Nondestructive Evaluation of Iowa Pavements Phase 1 4 5 mb pdf December 2007 Tech transfer summary Using Artificial Neural Networks in Pavement Structural Analysis 94 kb pdf Dec 2007 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract Evaluating structural conditions of existing in service pavements is a part of the routine maintenance and rehabilitation activities undertaken by the most departments of transportation DOTs In the field the pavement deflection profiles or basins gathered from the nondestructive falling weight deflectometer FWD test data are typically used to evaluate pavement structural conditions Over the past decade interest has increased in a new class of computational intelligence system known as artificial neural networks ANNs for use in geomechanical and pavement systems applications This report describes the development and use of ANN models as pavement structural analysis tools for the rapid and accurate prediction of layer parameters of Iowa pavements subjected to typical highway loadings ANN models trained with the results

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1086705308 (2015-11-09)
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  • Smart Wetlands Mitigation for Iowa Department of Transportation Projects
    IA 50010 8664 Phone 515 294 8103 FAX 515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Smart Wetlands Mitigation for Iowa Department of Transportation Projects Researcher s Principal investigator Carlo D Smith Missouri State University Project status Completed Start date 11 01 04 End date 11 30 06 Publications Report Smart Wetlands Mitigation for Iowa Department of Transportation Projects 2 4 mb pdf November 2006 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract The purpose of this project was to develop a framework for an Iowa Wetland Mitigation Clearinghouse IWMC and showcase typical inventories that will serve agencies and communities involved with wetland mitigation While the Iowa DOT currently performs wetland mitigation on a project by project basis other agencies such as the Iowa Department of Natural Resources and the Natural Resource Conservation Service perform wetland restoration projects and counties and cities mitigate wetland losses as well The Iowa DOT desired to determine whether state and local resources may be used cooperatively in developing shared wetland mitigation projects in ways that will benefit both Iowa agencies and local governments This project accomplished the following tasks

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1521644999 (2015-11-09)
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  • Using Digital Video Analysis to Monitor Driver Behavior at Intersections
    Institute for Transportation Address 2711 S Loop Drive Suite 4700 Ames IA 50010 8664 Phone 515 294 8103 FAX 515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Using Digital Video Analysis to Monitor Driver Behavior at Intersections Researcher s Principal investigator Derrick Parkhurst Iowa State University Project status Completed Start date 07 01 05 End date 11 30 06 Publications Report Using Digital Video Analysis to Monitor Driver Behavior at Intersections 786 kb pdf November 2006 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract Commercially available instruments for road side data collection take highly limited measurements require extensive manual input or are too expensive for widespread use However inexpensive computer vision techniques for digital video analysis can be applied to automate the monitoring of driver vehicle and pedestrian behaviors These techniques can measure safety related variables that cannot be easily measured using existing sensors The use of these techniques will lead to an improved understanding of the decisions made by drivers at intersections These automated techniques allow the collection of large amounts of safety related data in a relatively short amount of time There is

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1858089422 (2015-11-09)
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  • Performance Evaluation of Rubblized Pavements in Iowa
    Seat Methods TR 473 Researcher s Principal investigators Halil Ceylan 515 294 8051 hceylan iastate edu Iowa State University Co principal investigators Kasthurira Gopalakrishnan 515 294 3044 rangan iastate edu Iowa State University Project status Completed Start date 01 01 06 End date 10 31 06 Publications Report Rehabilitation of Concrete Pavements Utilizing Rubblization and Crack and Seat Methods Phase II Performance Evaluation of Rubblized Pavements in Iowa 8 mb pdf April 2008 Tech transfer summary Performance Evaluation of Rubblized Pavements in Iowa 109 kb pdf Apr 2008 Sponsor s partner s Sponsor s Iowa Department of Transportation Iowa Highway Research Board About the research Abstract This Phase II follow up study of IHRB Project TR 473 focused on the performance evaluation of rubblized pavements in Iowa The primary objective of this study was to evaluate the structural condition of existing rubblized concrete pavements across Iowa through Falling Weight Deflectometer FWD tests Dynamic Cone Penetrometer DCP tests visual pavement distress surveys etc Through backcalculation of FWD deflection data using the ISU s advanced layer moduli backcalculation program the rubblized layer moduli were determined for various projects and compared with each other for correlating with the long term pavement performance The

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=365908530 (2015-11-09)
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  • Planning, Developing and Implementing the Iowa Pavement Marking Management System (IPMMS)
    515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Planning Developing and Implementing the Iowa Pavement Marking Management System IPMMS Researcher s Principal investigators Neal Hawkins 515 294 7733 hawkins iastate edu Co principal investigators Zachary Hans 515 294 2329 zhans iastate edu Omar Smadi 515 294 7110 smadi iastate edu Iowa State University Project status Completed Start date 06 01 04 End date 09 01 06 Publications Report Planning Developing and Implementing the Iowa Pavement Marking Management System IPMMS Phases I and II 12 mb pdf September 2006 Sponsor s partner s Sponsor s Midwest Transportation Consortium About the research Abstract With an annual pavement marking program of approximately 2 million and another 750 thousand invested in maintenance of durable markings each year the Iowa DOT is seeking every opportunity to provide all year markings staying in acceptable condition under all weather conditions The goal of this study is to analyze existing pavement marking practices and to develop a prototype Pavement Marking Management System PMMS This report documents the first two phases of a three phase research project Phase I includes an overview of the Iowa DOT s existing practices and

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1775484868 (2015-11-09)
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  • Safety Impacts of Street Lighting at Isolated Rural Intersections, Part II
    shallmar iastate edu Iowa State University Co principal investigators Zachary Hans 515 294 2329 zhans iastate edu Tom McDonald Student researcher Hillary Isebrands Project status Completed Start date 06 01 03 End date 09 01 06 Publications Reports Final Report 1 14 mb pdf September 2006 Interim Report 2 mb pdf December 2004 Related publications Safety Impacts of Street Lighting at Isolated Rural Intersections 371 kb pdf Tech transfer summary Sep 2006 Rural intersections benefit from street lights Technology News Jun 2005 Sponsor s partner s Sponsor s Minnesota Department of Transportation About the research Abstract Several research efforts including one initiated by the Minnesota Local Road Research Board LRRB have suggested that rural intersection lighting reduces nighttime crashes and is a cost effective crash mitigation strategy However many Minnesota highway agencies do not routinely install or maintain streetlights at rural intersections or retain formal warrants or guidelines for installation This study was initiated to evaluate the effectiveness of rural street lighting in reducing nighttime crashes at isolated rural intersections so that Minnesota agencies have more information to make lighting decisions A before and after study was also used to evaluate the impact of lighting on nighttime crashes A survey was made of Minnesota counties to determine locations where lighting had been installed at rural intersections Site visits were made to the majority of the intersections to collect geometric and surrounding land use data A total 34 intersections were analyzed after removing unsuitable candidates from the list of potential locations A reduction in the number of nighttime crashes was observed after lighting was installed at 44 of the intersections At the same time daytime crashes increased at 47 of the intersections The nighttime to total and nighttime to daytime crash ratios also decreased by approximately 32 in the after period

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=579 (2015-11-09)
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