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  • Investigation of Rural J-Turn Design Factors Using the Zousim Driving Simulator
    Iowa State University All rights reserved Investigation of Rural J Turn Design Factors Using the Zousim Driving Simulator Researcher s Principal investigator Carlos Sun University of Missouri Columbia Project status In progress Start date 09 01 14 End date 04 30 16 Sponsor s partner s Sponsor s Midwest Transportation Center Missouri Department of Transportation University of Missouri Columbia USDOT OST R About the research Abstract J turns have been

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=514709633 (2015-11-09)
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  • System-Wide Safety Treatments and Design Guidance for J-Turns
    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 System Wide Safety Treatments and Design Guidance for J Turns Researcher s Principal investigator Praveen Edara University of Missouri Columbia Project status In progress Start date 09 01 14 End

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-532125474 (2015-11-09)
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  • Technical Analysis to Support the Bridge Condition Performance Measure
    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 Technical Analysis to Support the Bridge Condition Performance Measure Researcher s Principal investigators Omar Smadi 515 294

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-271367992 (2015-11-09)
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  • Data-Driven Highway Infrastructure Resilience Assessment
    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 Data Driven Highway Infrastructure Resilience Assessment Researcher s Principal investigator Guiping Hu Iowa State University Project status In progress Start date 08 16 14 End date 08 15 15 Sponsor s partner s

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=377096323 (2015-11-09)
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  • Michigan Urban Trunkline Segments Safety Performance Function Development and Support
    iastate edu Copyright 1996 2009 Iowa State University All rights reserved Michigan Urban Trunkline Segments Safety Performance Function Development and Support Researcher s Principal investigator Peter Savolainen 515 294 3381 pts iastate edu Project status In progress Start date 08 16 14 End date 02 28 16 Sponsor s partner s Sponsor s Michigan Department of Transportation Partner s sub to Wayne State About the research Abstract This research aims to develop a uniform consistent approach that can be applied to estimate the safety performance of urban trunkline road segments at the aggregate i e total crash level as well as to within specific crash types and crash severity categories The study results will provide important guidance to allow Michigan Department of Transportation MDOT to make informed decisions as to planning and programming decisions for safety projects The specific study objectives that will be accomplished in order to meet this goal are as follows 1 Review and summarize previous and existing efforts to generate Safety Performance Function s 2 Identify sites for the following urban road segment types from existing Safety Analyst output a Urban Trunkline Two Lane Arterial b Urban Trunkline Three Lane Arterials c Urban Trunkline Four Lane

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-2097795887 (2015-11-09)
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  • Assessing Segment and Corridor-Based Travel Time Reliability on Urban Freeways
    294 8103 FAX 515 294 0467 Website www ctre iastate edu Copyright 1996 2009 Iowa State University All rights reserved Assessing Segment and Corridor Based Travel Time Reliability on Urban Freeways Researcher s Principal investigators Jing Dong 515 294 3957 jingdong iastate edu Project status In progress Start date 08 15 14 End date 08 15 16 Sponsor s partner s Sponsor s Iowa Department of Transportation Midwest Transportation Center USDOT OST R About the research Abstract The objective of this research is to quantify travel time reliability measures on urban freeways including segment based measures which are concerned with the service quality at a bottleneck and corridor based measures that capture the variation in travel times along a corridor One way to examine travel time variation is to look at the distribution of travel times Based on travel time distributions various reliability measures can be derived such as 90th or 95th percentile travel times buffer index and planning time index The microscopic traffic simulation software VISSIM will be used to represent individual driver behavior model congestion patterns at freeway merge diverge areas and generate the appropriate travel time reliability measures at the segment level Corridor based reliability measures will

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1133410006 (2015-11-09)
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  • Implementation Support for SHRP 2 Renewal Project R06E - Real-Time Smoothness Measurements on Portland Cement Concrete Pavements During Construction
    R06E Real Time Smoothness Measurements on Portland Cement Concrete Pavements During Construction Researcher s Principal investigators Peter Taylor 515 294 9333 ptaylor iastate edu Project status In progress Start date 08 11 14 End date 08 14 17 Publications Report Real Time Smoothness Measurements on Portland Cement Concrete Pavements During Construction NA pdf January 2013 Sponsor s partner s Sponsor s Federal Highway Administration National Highway Institute Second Strategic Highway Research Program SHRP 2 About the research Abstract The overall objective of the Second Strategic Highway Research Program SHRP 2 project R06E Real Time Smoothness Measurements on Portland Cement Concrete PCC Pavements during Construction was to enable real time control of concrete pavement smoothness during construction by evaluating and demonstrating promising technologies and the development of both model specifications and construction guidance that are capable of working with the identified technology in such a way as to further the objective of rapid implementation by state highway agencies Seven potential real time smoothness measurement devices were identified and studied as part of the project Two of the devices were found to warrant subsequent evaluation and demonstration as part of Phase Ill of the project These included the GOMACO Smoothness Indicator GSI and the Ames Engineering Real Time Profiler RTP The GOMACO device was piloted and evaluated during concrete paving projects in Arkansas and Michigan and the Ames device was piloted in Michigan New York and Texas During the project it was noted that there was consensus among contractors that the real time smoothness measuring technology represents a valuable process control tool in that the ability to have real time feedback from intentional process changes has the greatest potential to make lasting improvements in the smoothness of concrete pavements While the current state of the practice is to cautiously make an equipment

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=521709828 (2015-11-09)
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  • Data Driven Urban Traffic Prediction for Winter Performance Measurements
    State University All rights reserved Data Driven Urban Traffic Prediction for Winter Performance Measurements Researcher s Principal investigator Zhengyuan Zhu Co principal investigator Mark Kaiser Iowa State University Project status In progress Start date 08 01 14 End date 03 31 16 Sponsor s partner s Sponsor s Iowa Department of Transportation Midwest Transportation Center USDOT OST R About the research Abstract Prediction of traffic speed drop under severe weather

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1462349006 (2015-11-09)
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