1–20 von 37 Ergebnissen
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    Analysis of Expected Crash Reduction Benefits and Costs of Truck-Mounted Attenuator Use in Work Zones

    Ullman, Gerald L. / Iragavarapu, Vichika | Transportation Research Record | 2014

    Analysis of Major Freeway Incidents in Houston, Texas

    Ullman, Gerald L. / Ogden, Michael A. | Transportation Research Record | 1996

    Categorization of Work Zone Intrusion Crashes

    Ullman, Gerald L. / Finley, Melisa D. / Theiss, LuAnn | Transportation Research Record | 2011

    Closed Course Performance Testing of a Work Zone Intrusion Alarm System

    Theiss, LuAnn / Lindheimer, Tomas / Ullman, Gerald L. | Transportation Research Record | 2018

    Driver Comprehension of Messages on Truck-Mounted Changeable Message Signs during Mobile Maintenance Operations

    Ullman, Brooke R. / Ullman, Gerald L. / Trout, Nada D. | Transportation Research Record | 2011

    Driver Perceptions of Traffic-Calming versus Active Enforcement Efforts in Work Zones

    Ullman, Gerald L. / Brewer, Marcus A. | Transportation Research Record | 2014

    Driver Understanding and Secondary Task Performance While Viewing Traffic Safety Messages on Dynamic Message Signs

    Ullman, Gerald L. / Higgins, Laura L. / Chrysler, Susan T. et al. | Transportation Research Record | 2023

    Driver Understanding of Sequential Portable Changeable Message Signs in Work Zones

    Ullman, Brooke R. / Ullman, Gerald L. / Dudek, Conrad L. et al. | Transportation Research Record | 2007

    Effect of the Work Zone Double-Fine Law in Texas

    Ullman, Gerald L. / Carlson, Paul J. / Trout, Nada D. | Transportation Research Record | 2000

    Estimates of Work Zone Exposure on the National Highway System in 2001

    Ullman, Gerald L. / Holick, Andrew J. / Scriba, Tracy A. et al. | Transportation Research Record | 2004

    Evaluating Innovative Ideas in Pedestrian Signing for Temporary Traffic Control

    Ullman, Brooke R. / Ullman, Gerald L. | Transportation Research Record | 2010

    Evaluation of Alternative Dates for Advance Notification on Portable Changeable Message Signs in Work Zones

    Ullman, Gerald L. / Ullman, Brooke R. / Dudek, Conrad L. | Transportation Research Record | 2007

    Evaluation of Cost-Effectiveness of Steady-Burn Warning Lights in Work Zones

    Theiss, LuAnn / Pratt, Michael P. / Ullman, Gerald L. et al. | Transportation Research Record | 2014

    Evaluation of Dynamic Speed Display Signs

    Ullman, Gerald L. / Rose, Elisabeth R. | Transportation Research Record | 2005

    Field Test of a Portable Retroreflectometer for Retroreflective Raised Pavement Markers

    Ullman, Gerald L. / Rhodes, Lewis R. | Transportation Research Record | 1996

    Flashing Message Features on Changeable Message Signs

    Dudek, Conrad L. / Schrock, Steven D. / Ullman, Gerald L. et al. | Transportation Research Record | 2006

    Flashing Messages, Flashing Lines, and Alternating One Line on Changeable Message Signs

    Dudek, Conrad L. / Ullman, Gerald L. | Transportation Research Record | 2002

    Improved Business Driveway Channelizing Treatments in Work Zones

    Theiss, LuAnn / Gillette, George F. / Ullman, Gerald L. | Transportation Research Record | 2015

    Improved Practices for Temporary Work Zone Guide Signs

    Theiss, LuAnn / Higgins, Laura / Ullman, Gerald L. | Transportation Research Record | 2022