Search Results - "Torbic, Darren J."

Superelevation Design for Sharp Horizontal Curves on Steep Grades by Torbic, Darren J., Donnell, Eric T., Brennan, Sean N., Brown, Alexander, O'Laughlin, Mitchell K., Bauer, Karin M.

“…The objective of this study was to develop superelevation criteria for sharp horizontal curves on steep grades. Field studies were undertaken and vehicle…”
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Safety of Channelized Right-Turn Lanes for Motor Vehicles and Pedestrians by Potts, Ingrid B., Bauer, Karin M., Torbic, Darren J., Ringert, John F.

“…The paper presents the results of research undertaken to evaluate how the safety performance of intersection approaches with channelized right-turn lanes…”
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Design Guidance for Freeway Main-Line Ramp Terminals by Torbic, Darren J., Hutton, Jessica M., Bokenkroger, Courtney D., Brewer, Marcus A.

“…This paper presents the results of a study to develop improved design guidance for freeway main-line ramp terminals on the basis of modern driver behavior and…”
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Treatment Effects and Design Guidance for High- to Low-Speed Transition Zones for Rural Highways by Gilmore, David K., Bauer, Karin M., Torbic, Darren J., Kinzel, Christopher S., Frazier, Robert J.

“…This paper presents the results of a study to develop improved design guidance for high- to low-speed transition zones on rural highways. The primary steps of…”
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Safety Analysis of Interchanges by Torbic, Darren J., Harwood, Douglas W., Gilmore, David K., Richard, Karen R., Bared, Joe G.

“…As the U.S. freeway system ages and becomes more congested, many parts of the system, particularly interchanges, need reconstruction or rehabilitation. In…”
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Guidance on Design and Application of Rumble Strips by Torbic, Darren J., Hutton, Jessica M., Bokenkroger, Courtney D., Bauer, Karin M., Donnell, Eric T., Lyon, Craig, Persaud, Bhagwant

“…Many transportation agencies use shoulder rumble strips to address the problem of single-vehicle run-off-the-road crashes by alerting inattentive or drowsy…”
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Safety Performance of Crossroad Ramp Terminals at Single-Point and Tight Diamond Interchanges by Torbic, Darren J., Porter, Richard J., Gooch, Jeff, Kersavage, Kristin

“…Single-point diamond interchanges and tight diamond interchanges are two alternative interchange types that are considered in urban areas where right-of-way is…”
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New Intersection Crash Prediction Models for the Second Edition of the Highway Safety Manual by Torbic, Darren J., Cook, Daniel, Grotheer, Joseph, Porter, Richard, Gooch, Jeffrey, Kersavage, Kristin

“…The objective of this research was to develop new intersection crash prediction models for consideration in the second edition of the Highway Safety Manual…”
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Safety of U-Turns at Unsignalized Median Openings: Some Research Findings by Levinson, Herbert, Potts, Ingrid, Harwood, Douglas, Gluck, Jerome, Torbic, Darren

“…Many state and local transportation agencies install nontraversable medians on multilane highways to improve safety and travel times and to manage local access…”
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Enhanced Design Guidelines for Interchange Loop Ramps by Torbic, Darren J., Brewer, Marcus A.

“…The objective of this research was to develop improved design guidance for interchange loop ramps. Despite their long use, there is little research on the…”
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Determining Critical Length of Grade for Geometric Design of Vertical Alignments by Torbic, Darren J., Harwood, Douglas W., Richard, Karen R., Glauz, William D.

“…In the 2001 Green Book, critical length of grade is generally defined as the length of grade that would produce a speed reduction of 15 km/h (10 mph) for a…”
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Application of Highway Safety Manual Method for Ramp Crash Prediction to Loop and Diamond Ramps by Torbic, Darren J., Harwood, Douglas W., Bauer, Karin M.

“…The AASHTO Highway Safety Manual (HSM) now includes crash prediction procedures for ramps. Research was undertaken to assess how well these new crash…”
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Treatment Effects and Design Guidance for High- to Low-Speed Transition Zones for Rural Highways: Operational Effects of Geometrics and Access Management 2013 by GILMORE, David K, BAUER, Karin M, TORBIC, Darren J, KINZEL, Christopher S, FRAZIER, Robert J

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Safety of Channelized Right-Turn Lanes for Motor Vehicles and Pedestrians: Highway Safety Performance 2013 by POTTS, Ingrid B, BAUER, Karin M, TORBIC, Darren J, RINGERT, John F

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Design Guidance for Bicycle Lane Widths by Fees, Chris A., Torbic, Darren J., Bauer, Karin M., Van Houten, Ron, Roseberry, Nathan, LaPlante, John

“…The objective of this research was to develop recommendations for bicycle lane width for various roadway and traffic characteristics. An observational field…”
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Design Guidance for Freeway Main-Line Ramp Terminals: Highway Design 2012 by TORBIC, Darren J, HUTTON, Jessica M, BOKENKROGER, Courtney D, BREWER, Marcus A

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Pedestrian Safety Prediction Methodology for Urban Signalized Intersections by Torbic, Darren J., Harwood, Douglas W., Bokenkroger, Courtney D., Srinivasan, Raghavan, Carter, Daniel, Zegeer, Charles V., Lyon, Craig

“…A coordinated effort is under way to develop a Highway Safety Manual (HSM) for use in making quantitative estimates of the safety performance of specific…”
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Guidance on Design and Application of Rumble Strips: Traffic Control Devices, Visibility, and Highway-Rail Grade Crossings 2010 by TORBIC, Darren J, HUTTON, Jessica M, BOKENKROGER, Courtney D, BAUER, Karin M, DONNELL, Eric T, LYON, Craig, PERSAUD, Bhagwant

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Pedestrian Safety Prediction Methodology for Urban Signalized Intersections: Pedestrians 2010 by TORBIC, Darren J, HARWOOD, Douglas W, BOKENKROGER, Courtney D, SRINIVASAN, Raghavan, CARTER, Daniel, ZEGEER, Charles V, LYON, Craig

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Safety Analysis of Interchanges: Operational Effects of Geometrics and Access Management 2009 by TORBIC, Darren J, HARWOOD, Douglas W, GILMORE, David K, RICHARD, Karen R, BARED, Joe G

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