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  • One- to Two-Way Roadway Conversions
    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 One to Two Way Roadway Conversions Researcher s Principal investigators Neal Hawkins 515 294 7733 hawkins iastate edu Project

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-188163683 (2015-11-09)
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  • Predicting Critical VMA in Hot Mix Asphalt, Phase II
    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 Predicting Critical VMA in Hot Mix Asphalt Phase II

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=-1332747362 (2015-11-09)
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  • Rewriting Supervisory Training Program Unit 8: Managing the Project-The Supervisor's Role
    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 Rewriting Supervisory Training Program Unit 8 Managing the Project The Supervisor s Role Researcher s Principal investigators

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1089818128 (2015-11-09)
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  • Rural Expressway Intersection Crash analysis Update
    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 Rural Expressway Intersection Crash analysis Update Researcher s Principal investigator Tom Maze

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1112030384 (2015-11-09)
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  • Traffic Data Collection and Reduction Using Video Detection Equipment
    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 Traffic Data Collection and Reduction Using Video Detection Equipment Researcher s Principal investigator Stephen Andrle Project status Completed Start date 05 20 98 End date 06 30 05 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract The purpose of this project is to collect video images of traffic at locations throughout the state of Iowa The locations will be defined by the Engineering Division of the Iowa DOT The video image collection may involve the use of one or two trailers depending on the situation Each trailer has two black and white video cameras mounted on a 30 foot pneumatic boom and two high fidelity VHS format video tape records After videos of traffic are made the videos may either be viewed and interpreted by a trained observer to allow Iowa DOT engineers to better understand traffic operations at that location or using video image processing technology numerically quantify the

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=327 (2015-11-09)
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  • Review of Stability Berm Alternatives for Environmentally Sensitive Areas
    State University All rights reserved Review of Stability Berm Alternatives for Environmentally Sensitive Areas Placement of steel inclusion in drilled hole on I 235 in Iowa from Makarla 2004 Researcher s Principal investigators David White 515 294 1463 djwhite iastate edu Student researcher Mark Thompson Project status Completed Start date 03 15 05 End date 06 15 05 Publications Report Review of Stability Berm Alternatives for Environmentally Sensitive Areas 1 2 mb pdf June 2005 Sponsor s partner s Sponsor s Iowa Department of Transportation About the research Abstract Stability berms are commonly constructed where roadway embankments cross soft or unstable ground conditions Under certain circumstances the construction of stability berms cause unfavorable environmental impacts either directly or indirectly through their effect on wetlands endangered species habitat stream channelization longer culvert lengths larger right of way purchases and construction access limits Due to an ever more restrictive regulatory environment these impacts are problematic The result is the loss of valuable natural resources to the public lengthy permitting review processes for the department of transportation and permitting agencies and the additional expenditures of time and money for all parties The purpose of this project was to review existing stability berm alternatives

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1108659963 (2015-11-09)
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  • Investigation of User Costs and Benefits of Winter Road Closures
    2009 Iowa State University All rights reserved Investigation of User Costs and Benefits of Winter Road Closures Left Iowa ramp gate Researcher s Principal investigator Tom Maze Co principal investigator Michael Crum Student researcher Garrett Burchett Project status Completed Start date 05 01 03 End date 06 01 05 Publications Project webpage http www ctre iastate edu mtc projects 2003 01 htm Report Investigation of User Costs and Benefits of Winter Road Closures 1 3M pdf June 2005 Sponsor s partner s Sponsor s Iowa State University Midwest Transportation Consortium About the research Abstract This project explores the user costs and benefits of winter road closures Severe winter weather makes travel unsafe and dramatically increases crash rates When conditions become unsafe due to winter weather road closures should allow users to avoid crash costs and eliminate costs associated with rescuing stranded motorists Therefore the benefits of road closures are the avoided safety costs The costs of road closures are the delays that are imposed on motorists and motor carriers who would have made the trip had the road not been closed This project investigated the costs and benefits of road closures and found that evaluating the benefits and costs is not as simple as it appears To better understand the costs and benefits of road closures the project investigates the literature conducts interviews with shippers and motor carriers and conducts case studies of road closures to determine what actually occurred on roadways during closures The project also estimates a statistical model that relates weather severity to crash rates Although the statistical model is intended to illustrate the possibility to quantitatively relate measurable and predictable weather conditions to the safety performance of a roadway In the future weather conditions such as snow fall intensity visibility etc can be used to make

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=449824217 (2015-11-09)
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  • Trucks and Twin Cities Traffic Management
    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 Trucks and Twin Cities Traffic Management Twin Cities traffic Researcher s Principal investigator Tom Maze Co principal investigators Dennis Kroeger Mark Berndt Project status Completed Start date 06 01 04 End date 06 01 05 Publications Report Trucks and Twin Cities Traffic Management 3 mb pdf June 2005 Tech transfer summary Trucks and Twin Cities Traffic Management pdf Jun 2005 Sponsor s partner s Sponsor s Minnesota Department of Transportation About the research Abstract The purpose of this project is to identify strategies that will reduce congestion for trucks traveling within and through the Twin Cities The planning and development of most highway facilities focuses on the general needs of the majority of traffic in the traffic stream However the performance function and purpose of heavy trucks are dissimilar to those of the majority of the vehicles in the traffic stream It is for this reason that the National Cooperative Highway Research synthesis report 314 identified a number of improvements that state transportation agencies have implemented or

    Original URL path: http://www.ctre.iastate.edu/research/detail.cfm?projectID=1915567072 (2015-11-09)
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