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  • Management Support of the AURORA Program
    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 Management Support of the AURORA Program Researcher s Principal investigator Tom Maze Project status Completed Start date 10 01 03 End date 12 31 07 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-830637510 (2015-11-09)
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  • Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements, Phase 3
    University Gary Fick Trinity Construction Project status Completed Start date 08 01 06 End date 12 31 07 Publications Report Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements Final Report 12 7 mb pdf March 2008 Related publications Publications from Material and Construction Optimization Project off site Aug 2008 Testing Guide for Implementing Concrete Pavement Quality Control Procedures 6 mb pdf CP Tech Center Publication Mar 2008 Integrated Materials and Construction Practices for Concrete Pavement A State of the Practice Manual 2nd printing off site Oct 2007 Sponsor s partner s Sponsor s Federal Highway Administration Partner s State partners Georgia Indiana Iowa lead state Kansas Louisiana Michigan Minnesota Missouri Nebraska New York North Carolina North Dakota Ohio Oklahoma South Dakota Texas Wisconsin About the research Abstract Mixture materials mix design and pavement construction are not isolated steps in the concrete paving process Each affects the other in ways that determine overall pavement quality and long term performance However equipment and procedures commonly used to test concrete materials and concrete pavements have not changed in decades leaving gaps in our ability to understand and control the factors that determine concrete durability The concrete paving community needs tests that will adequately characterize the materials predict interactions and monitor the properties of the concrete The overall objectives of this study were 1 to evaluate conventional and new methods for testing concrete and concrete materials to prevent material and construction problems that could lead to premature concrete pavement distress and 2 to examine and refine a suite of tests that can accurately evaluate concrete pavement properties The project included three phases In Phase I the research team contacted each of 16 participating states to gather information about concrete and concrete material tests A preliminary suite of tests to

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=175563032 (2015-11-09)
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  • Short-Term Monitoring of the Saylorville Reservoir Bridge for Wind-Induced Vibrations with Remote, Cellular-Based Notifications
    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 Short Term Monitoring of the Saylorville Reservoir Bridge for Wind Induced Vibrations with Remote Cellular Based Notifications Both the Saylorville and Red Rock Reservoir bridges are about a mile long Similar related projects Monitoring Wind Induced Vibrations Stresses in a High Mast Lighting Tower Researcher s Principal investigators Brent Phares 515 294 5879 bphares iastate edu Iowa State University Project status Completed Start date 09 01 06 End date 12 31 07 Publications Report Wind Monitoring of the Saylorville and Red Rock Reservoir Bridges with Remote Cellular Based Notifications 1 56 mb pdf June 2012 Tech transfer summary Wind Monitoring of the Saylorville and Red Rock Reservoir Bridges with Remote Cellular Based Notifications 1 28 mb pdf May 2012 Sponsor s partner s Sponsor s Federal Highway Administration Iowa Department of Transportation About the research Abstract After a high wind even on January 24 2006 the Des Moines Register reported that the Saylorville Reservoir bridge was observed swaying at least two probably three feet

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1261572819 (2015-11-09)
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  • The Effectiveness of Iowa's Automated Red Light Running Enforcement Programs (RLR, Phase 2)
    Programs RLR Phase 2 Front view of a red light running camera Similar related projects Evaluation of Automated Enforcement of Traffic Signal Violations in Iowa Effectiveness of All Red Clearance Time on Intersection Accidents and Violation Trends Researcher s Principal investigators Shauna Hallmark 515 294 5249 shallmar iastate edu Iowa State University Co principal investigator Tom McDonald Student researchers Massiel Orellana Eric Fitzsimmons Project status Completed Start date 08 01 06 End date 12 31 07 Publications Report The Effectiveness of Iowa s Automated Red Light Running Enforcement Programs RLR Phase 2 6 4 mb pdf December 2007 Related publications Evaluating Red Light Running Programs in Iowa 519 kb pdf Tech transfer summary Dec 2007 Cameras reduce red light running crashes in Iowa 226 kb pdf Technology News Dec 2007 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract The Federal Highway Administration estimates that red light running causes more than 100 000 crashes and 1 000 fatalities annually and results in an estimated economic loss of over 14 billion per year in the United States In Iowa alone a statewide analysis of red light running crashes using crash data from 2001 to 2006 indicates

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1158685907 (2015-11-09)
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  • Traffic Calming Techniques for Small Rural Communities
    projects Guidelines for Removal of Traffic Control Devices in Rural Areas A Study on Speed Humps Traffic Safety Engineering Informational Series Methods to Reduce Traffic Speed in High Pedestrian Areas Researcher s Principal investigators Shauna Hallmark 515 294 5249 shallmar iastate edu Iowa State University Co principal investigators Neal Hawkins 515 294 7733 hawkins iastate edu Student researcher Eric Petersen Project status Completed Start date 12 01 04 End date 12 31 07 Publications Report Evaluation of Gateway and Low Cost Traffic Calming Treatments for Major Routes in Small Rural Communities 7 9 mb pdf November 2007 Related publications FHWA TechBrief Traffic Calming on Main Roads Through Rural Communities off site Feb 2009 Low Cost Traffic Calming in Slater Iowa 172 kb pdf Tech transfer summary Nov 2007 Gateway Traffic Calming in Roland Iowa 233 kb pdf Tech transfer summary Nov 2007 Single Measure Traffic Calming in Dexter Iowa 170 kb pdf Tech transfer summary Nov 2007 Gateway Traffic Calming in Union Iowa 172 kb pdf Tech transfer summary Nov 2007 Single Measure Traffic Calming in Gilbert Iowa 136 kb pdf Tech transfer summary Nov 2007 Sponsor s partner s Sponsor s Iowa Highway Research Board About the research Abstract Many rural communities have developed around highways or major county roads as a result the main street through small rural communities is often part of a high speed rural highway Highways and county roads are characterized by high speeds outside the city limits they then transition into a reduced speed section through the rural community Consequently drivers passing through the community often enter at high speeds and maintain those speeds as they travel through the community Traffic calming in small rural communities along major roadways is common in Europe but the U S does not have experience with applying traffic

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-226410767 (2015-11-09)
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  • Updated Rule on Safety and Mobility
    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 Updated Rule on Safety and Mobility Researcher s Principal investigator Tom Maze Co principal investigator Tom McDonald Student researcher Jonathan Wiegand Project status Completed Start date 05 01 06 End date 12 31 07 Publications Report Implementation of the Federal Highway Administration Final Rule on Work Zone Safety and Mobility 437 kb pdf December 2007 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract The Federal Highway Administration published the final rule updating 23 CFR 630 Subpart J in September 2004 The revised rule requires agencies using federal funding to address both safety and mobility in planning and construction of roadway improvements The Iowa Department of Transportation Iowa DOT requested the assistance of the Center for Transportation and Research in developing guidance for a policy and procedures to comply with the final rule This report describes an in depth examination of current Iowa DOT project development processes

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-714385169 (2015-11-09)
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  • Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements, Phases I and II
    in PCC Pavements Phases I and II CP Tech Center s Mobile Concret Research Lab Researcher s Principal investigators Jim Grove Co principal investigators Tom Cackler Student researcher Fatih Bektas Project status Completed Start date 02 01 03 End date 12 01 07 Publications Project webpage http www cptechcenter org research research initiatives mco Report Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements Phases I and II 2 6 mb pdf September 2004 Related publications New Tests and Field Obervations in the MCO Project pdf Tech transfer summary Apr 2006 Material and Construction Optimization for Prevention of Premature Pavement Distress in PCC Pavements Phase 1 pdf Tech transfer summary Sep 2004 Sponsor s partner s Sponsor s American Concrete Pavement Association Concrete paving industry Federal Highway Administration Georgia Department of Transportation Indiana Department of Transportation Iowa Department of Transportation Kansas Department of Transportation Lousiana Department of Transportation Michigan Department of Transportation Minnesota Department of Transportation Nebraska Department of Roads New York State Department of Transportation North Carolina Department of Transportation North Dakota Department of Transportation Ohio Department of Transportation Oklahoma Department of Transportation South Dakota Department of Transportation Texas Department of Transportation Wisconsin Department of

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=586 (2015-11-09)
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  • Development of Fatigue Design Procedures for Slender, Tapered Support Structures for Highway Signs, Luminaries, and Traffic Signals Subjected to Wind-Induced Excitation from Vortex Shedding and Buffeting
    Vortex Shedding and Buffeting A collapsed high mast light pole along I 29 near Sioux City Iowa in 2003 Similar related projects Monitoring Wind Induced Vibrations Stresses in a High Mast Lighting Tower Researcher s Principal investigators Brent Phares 515 294 5879 bphares iastate edu Iowa State University Partha Sarkar Iowa State University Co principal investigators Terry Wipf 515 294 6979 tjwipf iastate edu Student researcher Byung Ik Chang Project status Completed Start date 06 01 05 End date 11 30 07 Publications Report Development of Fatigue Design Procedures for Slender Tapered Support Structures for Highway Signs Luminaries and Traffic Signals Subjected to Wind Induced Excitation from Vortex Shedding and Buffeting 5 3 mb pdf November 2007 Sponsor s partner s Sponsor s Midwest Transportation Consortium About the research Abstract Cantilevered signal sign and light support structures are used nationwide on major interstates national highways local highways and at local intersections for traffic control purposes Recently there have been a number of failures of these structures that can likely be attributed to fatigue In light of the fact that there is considerable uncertainty in the calculation of vortex shedding loads in both the American Association of State Highway and Transportation AASHTO and the Canadian Highway Bridge Design Code CAN CSA code provisions the current equations used for vortex shedding fatigue design need to be reevaluated and likely re formulated or modified A luminary support structure or High Mast Light Pole HMLP is generally susceptible to two primary types of wind loading induced by natural wind gusts or buffeting and vortex shedding both of which excite the structure dynamically and can cause fatigue damage Vortex shedding is a unique type of wind load that alternatively creates areas of negative pressures on either side of a structure normal to the wind direction

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1803569138 (2015-11-09)
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