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Nebraska Department of Transportation: Research Reports

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Articles 301 - 330 of 335

Full-Text Articles in Civil and Environmental Engineering

Three Innovative Concepts For Short Span Steel Bridges, Aaron Jon Yakel, Atorod Azizinamini, Mohammadreza Farimani, Nazzanin Mossahebi Mar 2007

Three Innovative Concepts For Short Span Steel Bridges, Aaron Jon Yakel, Atorod Azizinamini, Mohammadreza Farimani, Nazzanin Mossahebi

Nebraska Department of Transportation: Research Reports

No abstract provided.


Centerline Curbing Treatment At Railroad Crossings For Improved Safety, Aemal Khattak, Dwight L. Mosby Jr., Gregory Mcknight, Brian Gardner Mar 2007

Centerline Curbing Treatment At Railroad Crossings For Improved Safety, Aemal Khattak, Dwight L. Mosby Jr., Gregory Mcknight, Brian Gardner

Nebraska Department of Transportation: Research Reports

The objectives of this research were to study unsafe actions of motor vehicle drivers at railroadhighway grade crossings, to evaluate centerline barriers in reducing those unsafe driver actions, and to note any maintenance or other issues with the barriers. Driver actions were observed at two railroad crossings before and after installation of centerline barriers. A comparison of observed driver actions in the pre- and post-barrier periods provided information on the effectiveness of the barriers in reducing unsafe driver actions while periodic inspection of the centerline barriers provided information on maintenance needs. A major concern of the Nebraska Department of Roads …


Safety Performance Evaluation Of Minnesota's Temporary Rigid Panel Sign Stand Systems, Karla A. Polivka, James C. Holloway, Ronald K. Faller, John R. Rohde Feb 2007

Safety Performance Evaluation Of Minnesota's Temporary Rigid Panel Sign Stand Systems, Karla A. Polivka, James C. Holloway, Ronald K. Faller, John R. Rohde

Nebraska Department of Transportation: Research Reports

No abstract provided.


Design And Evaluation Of An Open Combination Traffic/Bicycle Bridge Railing System, Jason A. Hascall, John R. Rohde, Dean L. Sicking, Karla A. Polivka, Ronald K. Faller, James C. Holloway M.S.C.E., E.I.T. Feb 2007

Design And Evaluation Of An Open Combination Traffic/Bicycle Bridge Railing System, Jason A. Hascall, John R. Rohde, Dean L. Sicking, Karla A. Polivka, Ronald K. Faller, James C. Holloway M.S.C.E., E.I.T.

Nebraska Department of Transportation: Research Reports

No abstract provided.


Material Selection And Design Consideration For Moisture Damage Of Asphalt Pavement, Jamilla Emi Sudo Lutif, Yong-Rak Kim Dec 2006

Material Selection And Design Consideration For Moisture Damage Of Asphalt Pavement, Jamilla Emi Sudo Lutif, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.


Crumb Rubber In Performance-Graded Asphalt Binder, Wayne Jensen, Magdy Abdelrahman Nov 2006

Crumb Rubber In Performance-Graded Asphalt Binder, Wayne Jensen, Magdy Abdelrahman

Nebraska Department of Transportation: Research Reports

No abstract provided.


Behavior And Design Of Buried Concrete Pipes, Ece Erdogmus, Maher K. Tadros Jun 2006

Behavior And Design Of Buried Concrete Pipes, Ece Erdogmus, Maher K. Tadros

Nebraska Department of Transportation: Research Reports

No abstract provided.


Intersection Safety, Aemal Khattak Mar 2006

Intersection Safety, Aemal Khattak

Nebraska Department of Transportation: Research Reports

The objectives of this project included a study to determine the safety effects of intersection type (unsignalized, signalized, and interchange) on Nebraska expressway intersections, quantification of the safety effects of a Collision Countermeasure System (CCS), and update of the Nebraska Department of Roads (NDOR) expressway intersection guidelines. The CCS is an Intelligent Transportation Systems (ITS) traffic control device to warn drivers of conflicting cross-traffic at rural, non-signalized intersections. The goal was that if found effective, the CCS will become part of the intersection designer’s options for expressway intersection design (other options being an interchange, traffic signals, and traffic control signs). …


Restricted-Zone Requirements For Superpave Mixes Made With Local Aggregate Sources, Yong-Rak Kim Mar 2006

Restricted-Zone Requirements For Superpave Mixes Made With Local Aggregate Sources, Yong-Rak Kim

Nebraska Department of Transportation: Research Reports

No abstract provided.


Development, Testing And Evaluation Of Ndor' Tl-5 Aesthetic Open Concrete Bridge Rail, Karla A. Polivka, Ronald K. Faller, James C. Holloway, Dean L. Sicking, John R. Rohde Dec 2005

Development, Testing And Evaluation Of Ndor' Tl-5 Aesthetic Open Concrete Bridge Rail, Karla A. Polivka, Ronald K. Faller, James C. Holloway, Dean L. Sicking, John R. Rohde

Nebraska Department of Transportation: Research Reports

No abstract provided.


Evaluation Of The Use Of Lithium Compounds In Controlling Alkali-Silica Reactivity In Concrete Pavement, Christopher Y. Tuan, Michael T. Kelly, Mark E. Buss Oct 2005

Evaluation Of The Use Of Lithium Compounds In Controlling Alkali-Silica Reactivity In Concrete Pavement, Christopher Y. Tuan, Michael T. Kelly, Mark E. Buss

Nebraska Department of Transportation: Research Reports

No abstract provided.


Investigating Binder Flushing Of Sp-2 Mixes, Magdy A. Abdelrahman Sep 2005

Investigating Binder Flushing Of Sp-2 Mixes, Magdy A. Abdelrahman

Nebraska Department of Transportation: Research Reports

No abstract provided.


Ndor Regression Equations, Branden J. Strahm, David M. Admiraal Aug 2005

Ndor Regression Equations, Branden J. Strahm, David M. Admiraal

Nebraska Department of Transportation: Research Reports

No abstract provided.


Long Term Monitoring Of A Steel Bridge Constructed Using Phase Constructoin, Aaron Jon Yakel, Paulo Marchon, Atorod Azizinamini Jul 2005

Long Term Monitoring Of A Steel Bridge Constructed Using Phase Constructoin, Aaron Jon Yakel, Paulo Marchon, Atorod Azizinamini

Nebraska Department of Transportation: Research Reports

No abstract provided.


Development Of A Steel Bridge System - Simple For Dead Load And Continuous For Live Load, Atorod Azizinamini, Aaron Jon Yakel, Mohammadreza Farimani Jul 2005

Development Of A Steel Bridge System - Simple For Dead Load And Continuous For Live Load, Atorod Azizinamini, Aaron Jon Yakel, Mohammadreza Farimani

Nebraska Department of Transportation: Research Reports

No abstract provided.


Effects Of Central Island Landscape Treatments At Single-Lane Roundabouts, Karen Schurr, Jorge Abos-Sanchez Mar 2005

Effects Of Central Island Landscape Treatments At Single-Lane Roundabouts, Karen Schurr, Jorge Abos-Sanchez

Nebraska Department of Transportation: Research Reports

No abstract provided.


Evaluation Of Alternate Cable Anchor Designs And Three-Cable Guardrail Adjacent To Steep Slope, Ryan M. Nelson, Dean L. Sicking, Ronald K. Faller, John D. Reid, John R. Rohde, Karla A. Polivka, Jason A. Hascall Feb 2005

Evaluation Of Alternate Cable Anchor Designs And Three-Cable Guardrail Adjacent To Steep Slope, Ryan M. Nelson, Dean L. Sicking, Ronald K. Faller, John D. Reid, John R. Rohde, Karla A. Polivka, Jason A. Hascall

Nebraska Department of Transportation: Research Reports

No abstract provided.


Safety Evaluation Of Left Turn Lane Line Width At Intersections With Opposing Left Turn Lanes, Aemal Khattak, Bhaven Naik, Vijay Kannan Dec 2004

Safety Evaluation Of Left Turn Lane Line Width At Intersections With Opposing Left Turn Lanes, Aemal Khattak, Bhaven Naik, Vijay Kannan

Nebraska Department of Transportation: Research Reports

The objective of this research project was to evaluate the effectiveness of offset opposing left-turn lanes at signalized intersections in reducing the frequency and severity of left-turn related accidents. The Cities of Lincoln and Omaha offset opposing left-turns by widening leftturn lane lines in June 1999 at six intersections. The research team investigated traffic accident patterns between January 1994 and December 2002 at those six intersections by making comparisons with two control intersections (i.e. intersections at which left-turns were not offset by lane line widening) using a four-step research methodology. First, existing literature was reviewed to determine the extent and …


Bond Strength Of Self-Consolidating Concrete For Prestressed Concrete Applications, Christopher Y. Tuan, Amgad F. Girgis Dec 2004

Bond Strength Of Self-Consolidating Concrete For Prestressed Concrete Applications, Christopher Y. Tuan, Amgad F. Girgis

Nebraska Department of Transportation: Research Reports

No abstract provided.


Dynamic Testing Of Wooden Guardrail Posts - White And Red Pine Species Equivalency Study, John R. Rohde, Jason A. Hascall, Karla A. Polivka, Dean L. Sicking, Ronald K. Faller Sep 2004

Dynamic Testing Of Wooden Guardrail Posts - White And Red Pine Species Equivalency Study, John R. Rohde, Jason A. Hascall, Karla A. Polivka, Dean L. Sicking, Ronald K. Faller

Nebraska Department of Transportation: Research Reports

No abstract provided.


Developments Of The Midwest Guardrail System For Standard And Reduced Post Spacing And In Combination With Curbs, Karla A. Polivka, Dean L. Sicking, John R. Rohde, Robert W. Bielenberg M.S.C.E., E.I.T., Ronald K. Faller, John D. Reid, James C. Holloway, Beau D. Kuipers Sep 2004

Developments Of The Midwest Guardrail System For Standard And Reduced Post Spacing And In Combination With Curbs, Karla A. Polivka, Dean L. Sicking, John R. Rohde, Robert W. Bielenberg M.S.C.E., E.I.T., Ronald K. Faller, John D. Reid, James C. Holloway, Beau D. Kuipers

Nebraska Department of Transportation: Research Reports

No abstract provided.


Development Of Rural Bicycle Compatibility Index, Elizabeth G. Jones Jul 2004

Development Of Rural Bicycle Compatibility Index, Elizabeth G. Jones

Nebraska Department of Transportation: Research Reports

No abstract provided.


Conductive Concrete For Bridge Deck Deicing And Anti-Icing, Christopher Y. Tuan Jul 2004

Conductive Concrete For Bridge Deck Deicing And Anti-Icing, Christopher Y. Tuan

Nebraska Department of Transportation: Research Reports

No abstract provided.


Integrating Gis And Transportation Modeling Operations For The Nebraska Department Of Roads, Sunil G. Narumalani, Markus Craig Jun 2004

Integrating Gis And Transportation Modeling Operations For The Nebraska Department Of Roads, Sunil G. Narumalani, Markus Craig

Nebraska Department of Transportation: Research Reports

No abstract provided.


Nu-Deck Precast Deck Panels And Innovative Bridge Research And Construction, Maher K. Tadros, Charles J. Vranek May 2004

Nu-Deck Precast Deck Panels And Innovative Bridge Research And Construction, Maher K. Tadros, Charles J. Vranek

Nebraska Department of Transportation: Research Reports

Most of the deficiency in existing stringer-type bridges lie in deterioration of the bridge deck. Cast-in-place reinforced concrete decks experience cracking shortly after construction due to large differential creep and shrinkage with the supporting beams, and due to the temperature drop experienced during the hydration cycle. The NUDECK (Nebraska University) system is a full-depth precast/prestressed concrete bridge deck panel system. The combination of high performance precast concrete, where little creep and shrinkage occur after the deck is made composite with the beams, and two-way prestressing assure continued pre-compression of the deck during its life. With this system, construction time and …


Tl-5 Development Of 42 And 51-Inch Tall Single-Faced, F-Shape Concrete Barriers, Ronald K. Faller, Dean L. Sicking, Jordan Larsen, Robert W. Bielenberg M.S.C.E., E.I.T., John R. Rohde, Karla A. Polivka Apr 2004

Tl-5 Development Of 42 And 51-Inch Tall Single-Faced, F-Shape Concrete Barriers, Ronald K. Faller, Dean L. Sicking, Jordan Larsen, Robert W. Bielenberg M.S.C.E., E.I.T., John R. Rohde, Karla A. Polivka

Nebraska Department of Transportation: Research Reports

No abstract provided.


Application Of Freeway Video Surveillance For Accident Investigation, Aemal Khattak, Yu Liu, Geza Pesti Apr 2004

Application Of Freeway Video Surveillance For Accident Investigation, Aemal Khattak, Yu Liu, Geza Pesti

Nebraska Department of Transportation: Research Reports

This report presents information on Research Project Number Z820 (UNL Ref. No. 26-1118- 0057-001) titled “Application of Freeway Video Surveillance for Accident Investigation.” Traffic accident investigation requires detailed documentation of the accident scene, vehicles, and persons involved in the collision. To adequately document an accident scene, investigating officers accurately record various measurements (e.g., skid marks, dimensions of different highway geometric elements, etc.). Typically, a measuring tape and/or a total station (theodolite) are used to obtain the needed measurements. Advances in digital imaging and computer technology make it possible to develop cost-effective traffic accident investigation system alternatives that provide sufficient accuracy, …


Safety Performance Evaluation Of The Nebraska Open Bridge Rail On An Inverted Tee Bridge Deck, Karla A. Polivka, John R. Rohde, Dean L. Sicking, Ronald K. Faller, James C. Holloway M.S.C.E., E.I.T. Jan 2004

Safety Performance Evaluation Of The Nebraska Open Bridge Rail On An Inverted Tee Bridge Deck, Karla A. Polivka, John R. Rohde, Dean L. Sicking, Ronald K. Faller, James C. Holloway M.S.C.E., E.I.T.

Nebraska Department of Transportation: Research Reports

No abstract provided.


Deceleration Lanes Of Left-Turn Bays Of Four-Lane Expressways, Karen Schurr, Patrick T. Mccoy, Geza Pesti, Anthonny Egelhoff, Rebecca Burdick Dec 2003

Deceleration Lanes Of Left-Turn Bays Of Four-Lane Expressways, Karen Schurr, Patrick T. Mccoy, Geza Pesti, Anthonny Egelhoff, Rebecca Burdick

Nebraska Department of Transportation: Research Reports

No abstract provided.


Implementation Of The Superstructure/Substructure Joint Details, Maher K. Tadros Dec 2003

Implementation Of The Superstructure/Substructure Joint Details, Maher K. Tadros

Nebraska Department of Transportation: Research Reports

No abstract provided.