Richard J. Porter portrait
  • Professional Engineer, State of Utah
  • University of Utah Program Director, Mountain-Plains Consortium, Civil And Environmental Engin
  • Adjunct Associate Professor, Civil And Environmental Engin
  • Associate Graduate Faculty Member, North Dakota State University
801-585-1290

Presentations

  • Hansen, C., Burian, S., Porter, R.J., Williams, G. “Statistical and Artificial Neural Network Models of Remotely Sensed Water Quality.” AWWA Water Quality Technology Conference, Salt Lake City, UT, November 17, 2015. Other, Presented, 11/17/2015.
  • Porter, R.J. “From Pennsylvania Coal Country to the University of Utah: Experiences and Opportunities in Transportation Engineering,” Mid-Atlantic Transportation Sustainability (MATS) Center “Careers” Seminar Series, University of Virginia, Charlottesville, VA, October 16, 2015. Invited Talk/Keynote, Presented, 10/16/2015.
  • Porter, R.J. “Quantifying the Safety Effects of Design Decisions through Observational Road Safety Studies,” Department of Civil & Environmental Engineering Seminar Series, University of Virginia, Charlottesville, VA, October 16, 2015. Invited Talk/Keynote, Presented, 10/16/2015.
  • Musunuru, A, Porter, R.J., Fyfe, M., and Sayed, T. “Risk and Reliability Analysis of Geometric Design Criteria: A Critical Synthesis,” Poster Session 2 of the 5th International Symposium on Highway Geometric Design, Vancouver, Canada, June 23, 2015. Conference Paper, Refereed, Presented, 06/23/2015.
  • Porter, R.J. “Performance-Based Geometric Design Analysis,” Workshop 2 of the 5th International Symposium on Highway Geometric Design, Vancouver, Canada, June 21, 2015. Invited Talk/Keynote, Presented, 06/21/2015.
  • Porter, R.J. “Past, Current, and Future Roles of Speed in Highway and Street Design,” Workshop 2 of the 5th International Symposium on Highway Geometric Design, Vancouver, Canada, June 21, 2015. Invited Talk/Keynote, Presented, 06/21/2015.
  • Transportation Research Board Webinar Moderator, Case Studies in Performance-Based Analysis of Geometric Design, June 17, 2015. Other, Presented, 06/17/2015.
  • Porter, R.J. “Geometric Design, Speed, and Safety,” TREC Seminar Series, Portland State University, Portland, Oregon, April 10, 2015. Invited Talk/Keynote, Presented, 04/10/2015.
  • Shea, M.S., Le, T.Q., and Porter, R.J. “A Combined Crash Frequency-Crash Severity Evaluation of Geometric Design Decisions: Entrance-Exit Ramp Spacing and Auxiliary Lane Presence,” Session 766 of the 94th Annual Meeting of the Transportation Research Board, Washington, D.C., January 14, 2015. Conference Paper, Refereed, Presented, 01/14/2015.
  • M. Thiese, G. Moffitt, R. Hanowski, S. Kales, R.J. Porter, and K. Hegmann, “Obesity and the Commercial Driver Medical Exam: Relationships and Certification Length, Transportation Research Board Truck and Bus Operator Health and Wellness Subcommittee Meeting [ANB70(3)], Washington, D.C., January 14, 2015. Other, Presented, 01/14/2015.
  • Tasic, I. and Porter, R.J. “Modeling Spatial Relationships between Access to Multimodal Transportation and Traffic Safety Outcomes,” Session 540 of the 94th Annual Meeting of the Transportation Research Board, Washington, D.C., January 13, 2015. Conference Paper, Refereed, Presented, 01/13/2015.
  • Tasic, I., Zlatkovic, M., Martin, P.T., and Porter, R.J. “Street Connectivity Versus Street Widening: Enhanced Street Connectivity on Traffic Operations in Transit-Supportive Environments,” Session 674 of the 94th Annual Meeting of the Transportation Research Board, Washington, D.C., January 13, 2015. Conference Paper, Refereed, Presented, 01/13/2015.
  • Zlatkovic, M., Porter, R.J., and Kergaye, C. “Performance-Based Pavement Marking Warranty Contracts: Experience and Lessons Learned in the State of Utah,” Session 239 of the 94th Annual Meeting of the Transportation Research Board, Washington, D.C., January 12, 2015. Conference Paper, Refereed, Presented, 01/12/2015.
  • E. Donnell, R.J. Porter, and J. Mason, “Automated-Connected Vehicles: Impacts on Activities of the TRB Geometric Design and Operational Effects of Geometrics Committees,” Transportation Research Board Combined Geometric Design and Operational Effects of Geometrics Committee Meeting [AFB10/AHB65], Washington, D.C., January 12, 2015. Other, Presented, 01/12/2015.
  • R.J. Porter, “First Update on NCHRP 17-68, Intersection Crash Prediction Methods for the Highway Safety Manual,” Transportation Research Board Safety Data, Analysis, and Evaluation Committee Meeting [ANB20], Washington, D.C., January 12, 2015. Other, Presented, 01/12/2015.
  • Porter, R.J. “The Art of Urban Street Performance Metrics: Safety Metrics for Decision Making,” Session 105 of the 94th Annual Meeting of the Transportation Research Board, Washington, D.C., January 11, 2015. Invited Talk/Keynote, Presented, 01/11/2015.
  • Porter, R.J. “The Present and Future of Speed Limits in a Toward Zero Deaths Framework: Speed Concepts, Speed Limits, and the Effects of the Road Environment on Speed and Safety,” Session 178 of the 94th Annual Meeting of the Transportation Research Board, Washington, D.C., January 11, 2015. Invited Talk/Keynote, Presented, 01/11/2015.
  • Musunuru, A. and Porter, R.J. “A Reliability-Based Geometric Design Approach to Freeway Number of Lanes Decisions,” Session C7 of the 2nd T&DI Congress of the American Society of Civil Engineers, Orlando, FL. Conference Paper, Refereed, Presented, 06/11/2014.
  • Porter, R.J. “Incorporating Road Safety Analysis into the Transportation Project Development Process: Recent Advancements,” Utah Society of Professional Engineers Annual Conference, Salt Lake City, UT. Invited Talk/Keynote, Presented, 05/03/2014.
  • Musunuru, A. and Porter, R.J. “A Reliability-Based Geometric Design Approach to Freeway Number of Lanes Decisions,” Session 582 of the 93rd Annual Meeting of the Transportation Research Board, Washington, D.C. Conference Paper, Refereed, Presented, 01/14/2014.
  • Tasic, I., Musunuru, A., and Porter, R.J. “Quantifying Accessibility of Non-Motorized Transportation Modes in Recreational Areas: Case Study of Mill Creek Canyon, Utah,” Session 436 of the 93rd Annual Meeting of the Transportation Research Board, Washington, D.C. Conference Paper, Refereed, Presented, 01/13/2014.
  • Porter, R.J. “Preserving the Lost Art of Geometric Design for Design Decision Making: Performance-Based Design,” Session 111 of the 93rd Annual Meeting of the Transportation Research Board, Washington, D.C. Invited Talk/Keynote, Presented, 01/12/2014.
  • Porter, R.J. “Hitting the Ground Running: Choosing and Navigating a Successful Transportation Career Path in Academia,” Session 107 of the 93rd Annual Meeting of the Transportation Research Board, Washington, D.C. Invited Talk/Keynote, Presented, 01/12/2014.
  • Brian Ray and R.J. Porter, NCHRP 15-34, “Performance Based Analysis of Geometric Design of Highways and Streets,” Safety Effects of Geometric Design Workshop, Irvine, CA, July 30, 2013. Invited Talk/Keynote, Presented, 07/2013.
  • Porter, R.J. “Reducing Roadway Departure Crashes at Horizontal Curve Sections on Rural, Two-Lane Highways: Work Plan Overview,” Research Committee Meeting of the National Committee on Uniform Traffic Control Devices, Portland, Maine, June 2013. Invited Talk/Keynote, Presented, 06/2013.
  • Tasic, I., Musunuru, A., and Porter, R.J.* “Towards Safety Performance-Based Traffic Signal Warrants,” Fourth Regular Session of the 53rd Annual Meeting of the ITE Intermountain Section, Jackson, WY, May 18, 2013. Conference Paper, Refereed, Presented, 05/18/2013.
  • Wood, J.S.* and Porter, R.J. “Safety Impacts of Design Exceptions on Non-Freeway Segments,” Session 679 of the 92nd Annual Meeting of the Transportation Research Board, Washington, D.C., January 15, 2013. Conference Paper, Refereed, Presented, 01/15/2013.
  • Le, T.Q.* and Porter, R.J. “Safety Effects of Cross Section Design on Urban and Suburban Roads,” Session 397 of the 92nd Annual Meeting of the Transportation Research Board, Washington, D.C., January 14, 2013. Conference Paper, Refereed, Presented, 01/14/2013.
  • Le, T.Q.*, Lund, C.K., and Porter, R.J. “Safety Effects of Cross Section Design on Urban and Suburban Roads,” Track A – Session 17 of the 4th Urban Street Symposium, Chicago, IL, June 26, 2012. Conference Paper, Refereed, Presented, 06/26/2012.
  • Karen Dixon and R.J. Porter (presenters), “The New Highway Safety Manual: Urban Applications,” Workshop 1 of the 4th Urban Street Symposium, Chicago, IL, June 26, 2012. Other, Presented, 06/26/2012.
  • Transportation Research Board Webinar Moderator, NCHRP 42-04/Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations, June 19, 2012 [registered continuing education]. Other, Presented, 06/19/2012.
  • Porter, R.J.*, Donnell, E.T., and Mason, J.M. “Geometric Design, Speed, and Safety: A Performance-Based Exploration,” Session 687 of the 91st Annual Meeting of the Transportation Research Board, Washington, D.C., January 25, 2012. [refereed paper]. Conference Paper, Refereed, Presented, 01/25/2012.
  • Le, T.Q.* and Porter, R.J. “Safety Evaluation of Geometric Design Criteria for EN-EX Ramp Spacing and Auxiliary Lane Use,” Session 687 of the 91st Annual Meeting of the Transportation Research Board, Washington, D.C., January 25, 2012. [refereed paper]. Conference Paper, Refereed, Presented, 01/25/2012.
  • Przybyla, J., Porter, R.J., Taylor, J.*, Nevers, B., and Zhou, X. “Evaluating Roadway Safety Improvement in a Traffic Assignment Framework,” Modern Safety Management Session of the 3rd International Conference on Road Safety and Simulation, Indianapolis, Indiana, September 15, 2011. Conference Paper, Refereed, Presented, 09/2011.
  • Porter, R.J.* and Le., T.Q. “Performance-Based Safety Evaluation of Requests for New Access or Modifications to Existing Access on Freeways,” Session 3 of the 1st International Conference on Access Management, Athens, Greece, June 16, 2011. Conference Paper, Refereed, Presented, 06/2011.
  • Porter, R.J.* “Road Design, Speed, and Safety on Urban and Suburban Roads: Why do We Get What We Get and how do We Get What We Want?” Session 4C of Edmonton’s 3rd International Conference on Urban Traffic Safety, Edmonton, Alberta, Canada, April 19, 2011. Invited Talk/Keynote, Presented, 04/2011.
  • Porter, R.J.* “The Interactive Highway Safety Design Model (IHSDM): Software to Support Performance-Based Road Design,” Session 4F of Edmonton’s 3rd International Conference on Urban Traffic Safety, Edmonton, Alberta, Canada, April 20, 2011. Invited Talk/Keynote, Presented, 04/2011.
  • Porter, R.J.* “Exploring the Relationship between Macroscopic Speed Parameters, Road Geometrics, and Traffic Control: An Empirical Study during Low-Volume Conditions in Construction Work Zones,” Session 330 of the 90th Annual Meeting of the Transportation Research Board, Washington, D.C., January 24, 2011. Conference Paper, Refereed, Presented, 01/2011.
  • Pesti, G.*, Chu, C.L., Fitzpatrick, K., Porter, R.J., and Le, T.Q. “Microscopic Simulation of Weaving Traffic between Freeway Ramps,” Session 662 of the 90th Annual Meeting of the Transportation Research Board, Washington, D.C., January 26, 2011. Conference Paper, Refereed, Presented, 01/2011.
  • Himes, S.C.*, Donnell, E.T., and Porter, R.J. “New Insights on Design Consistency Evaluations for Two-Lane, Rural Highways,” Session 610 of the 90th Annual Meeting of the Transportation Research Board, Washington, D.C., January 25, 2011. Conference Paper, Refereed, Presented, 01/2011.
  • Fitzpatrick, K.*, Porter, R.J., Pesti, G., Chu, C.L., Park, E.S., and Le, T.Q. “Guidelines for Spacing between Freeway Ramps,” Session 365 of the 90th Annual Meeting of the Transportation Research Board, Washington, D.C., January 24, 2011. Conference Paper, Refereed, Presented, 01/2011.
  • Porter, R.J.* “Preserving the Lost Art of Geometric Design for Freeways and Interchanges: Safety,” Session 101 of the 90th Annual Meeting of the Transportation Research Board, Washington, D.C., January 23, 2011. Invited Talk/Keynote, Presented, 01/2011.
  • Himes, S.C., Donnell, E.T.* and Porter, R.J. “New Insights on Design Consistency Evaluations for Two-Lane, Rural Highways,” Compendium of Papers from the 4th International Symposium on Highway Geometric Design, Valencia, Spain, June 2-5, 2010. [refereed paper]. Conference Paper, Refereed, Presented, 06/2010.
  • Donnell, E.T.*, Porter, R.J. and Shankar, V.N. “A Framework for Estimating the Safety Effects of Roadway Lighting at Intersections,” Session 539 of the 89th Annual Meeting of the Transportation Research Board, Washington, D.C., January 12, 2010. [refereed paper]. Conference Paper, Refereed, Presented, 01/12/2010.
  • Venglar, S.P.*, Porter, R.J. and Ballard, A.J. “Establishing Advisory Speeds on Freeway Exit Ramps,” Session 432 of the 89th Annual Meeting of the Transportation Research Board, Washington, D.C., January 12, 2010. [refereed paper – presented in poster session]. Conference Paper, Refereed, Presented, 01/12/2010.
  • Porter, R.J. “Establishing Crash Frequency Thresholds for Work Zone Safety Monitoring: When is an Increase Really an Increase,” Session 482 of the 89th Annual Meeting of the Transportation Research Board, Washington, D.C., January 12, 2010. Invited Talk/Keynote, Presented, 01/2010.
  • Porter, R.J. “The Need for Speed in Highway Design,” Session 145 of the 89th Annual Meeting of the Transportation Research Board, Washington, D.C., January 10, 2010. Invited Talk/Keynote, Presented, 01/2010.

Research Groups

  • Doyeon Kim, Graduate Student. 08/15/2015 - present.
  • Ariel Froerer, Undergraduate Student. 08/15/2015 - present.
  • Ryan Betz, Undergraduate Student. 08/15/2015 - present.
  • Juan Medina, Research Professor. 08/01/2015 - present.
  • Brendan Duffy, Technician. 08/01/2015 - present.
  • Jeffrey Taylor, Graduate Student. 08/01/2014 - present.
  • Yu Song, Graduate Student. 08/01/2014 - present.
  • Mingde Lin, Graduate Student. 08/01/2014 - present.
  • Kailash Tatineni, Graduate Student. 06/01/2014 - 12/31/2015.
  • M. Scott Shea, Graduate Student. 08/01/2013 - present.
  • Milan Zlatkovic, Research Professor. 07/01/2013 - present.
  • Anusha Musurunu, Graduate Student. 11/2012 - present.
  • Milan Zlatkovic, Postdoc. 07/2012 - 06/30/2013.
  • Ivana Tasic, Graduate Student. 07/2012 - present.
  • Jonathan Wood, Graduate Student. 01/2012 - 12/2012.
  • Carl Lund, Undergraduate Student. 01/2012 - 07/2012.

Geographical Regions of Interest

  • Americas
  • Croatia
  • Ireland
  • Serbia
  • United Kingdom of Great Britain and Northern Ireland

Publications

  • Tasic, I., Zlatkovic, M., Martin, P.T., and Porter, R.J. “Street Connectivity Versus Street Widening: Enhanced Street Connectivity on Traffic Operations in Transit-Supportive Environments,” In Transportation Research Record, Journal of the Transportation Research Board No. 2496, 2015, pp. 57-68. Published, 12/31/2015.
  • Zlatkovic, M., Porter, R.J., and Kergaye, C. “Performance-Based Pavement Marking Warranty Contracts: Experience and Lessons Learned in the State of Utah,” In Transportation Research Record, Journal of the Transportation Research Board No. 2504, 2015, pp. 49-57. Published, 12/31/2015.
  • Shea, M.S., Le, T.Q., and Porter, R.J. “A Combined Crash Frequency-Crash Severity Evaluation of Geometric Design Decisions: Entrance-Exit Ramp Spacing and Auxiliary Lane Presence,” In Transportation Research Record, Journal of the Transportation Research Board No. 2521, 2015, pp. 53-62.. Published, 12/31/2015.
  • Tasic, I.* and Porter, R.J. “Modeling Spatial Relationships between Multimodal Transportation Infrastructure and Traffic Safety Outcomes in Urban Environments,” Safety Science. Accepted, 11/2015.
  • Tasic, I.*, Porter, R.J., and Brewer, S.C. “Applications of Generalized Additive Models and Bayesian Hierarchical Models for Areal Safety Analysis of Urban Multimodal Transportation Systems,” accepted for publication in Transportation Research Record: Journal of the Transportation Research Board. Revise/resubmit(1), 10/2015.
  • Song, Y.*, Zlatkovic, M., and Porter, R.J. “GPS-Based Transit Signal Priority for Mixed-Traffic Bus Rapid Transit,” accepted for publication in Transportation Research Record: Journal of the Transportation Research Board. Revise/resubmit(1), 10/2015.
  • Fayyaz S., S.K.*, Liu, X.C., and Porter, R.J. “A Genetic-Algorithm and Regression-Based Model for Analyzing Fare Payment Structure and Transit Dwell Time,” accepted for publication in Transportation Research Record: Journal of the Transportation Research Board. Revise/resubmit(1), 10/2015.
  • Thiese, M.S., Moffitt, G., Hanowski, R.J., Kales, S.N., Porter, R.J., and Hegmann, K.T. “Repeated Cross-Sectional Assessment of Commercial Truck Driver Health,” In Journal of Occupational & Environmental Medicine 57(9), 2015, pp. 1022-1027. Published, 09/2015.
  • Musunuru, A*, Porter, R.J., Fyfe, M., and Sayed, T. “Risk and Reliability Analysis of Geometric Design Criteria: A Critical Synthesis,” Compendium of Papers from the 5th International Symposium on Highway Geometric Design, Vancouver, Canada, June 22-24, 2015. Published, 06/2015.
  • Boodlal, L., Donnell, E.T., Porter, R.J., Garimella, D., Le, T.Q., Croshaw, K., Himes, S., Kulis, P., and Wood, J. “Factors Influencing Operating Speeds and Safety on Rural and Suburban Roads,” Report No. FHWA-HRT-15-030, Federal Highway Administration, Office of Safety Research and Development, McLean, VA, 2015. Published, 05/2015.
  • Wood, J.S., Donnell, E.T., and Porter, R.J. "Comparison of Safety Effects Estimates Obtained from Empirical Bayes, Before-After Study, Propensity Scores-Potential Outcomes Framework, and Regression Model with Cross-Sectional Data," In Accident Analysis and Prevention 75, 2015, pp. 144-154. Published, 01/2015.
  • Taylor, J., Zhou, X., Rouphail, N.M., and Porter, R.J. "Method for Investigating Intradriver Heterogeneity using Vehicle Trajectory Data: A Dynamic Time Warping Approach," In Transportation Research Part B 73, 2015, pp. 59-80. Published, 01/01/2015.
  • Thiese, M.S., Moffitt, G., Hanowski, R.J., Kales, S.N., Porter, R.J., and Hegmann, K.T. “Commercial Driver Medical Exams: Prevalence of Obesity, Co-morbidities, and Certification Outcomes,” In Journal of Occupational & Environmental Medicine 57(6), 2015, pp. 659-665. Published, 01/2015.
  • Musunuru, A. and Porter, R.J. "Reliability-Based Geometric Design Approach for Selecting Basic Number of Freeway Lanes," In Transportation Research Record, Journal of the Transportation Research Board No. 2436, 2014, pp. 70-80. Published, 12/2014.
  • Knapp, K., Chandler, B., Atkinson, J., Welch, T., Rigdon, H., Retting, R., Meekins, S., Widstrand, E., and Porter, R.J. “Road Diet Informational Guide,” Report No. FHWA-SA-14-028, Federal Highway Administration, Office of Safety, Washington, DC, 2014. Published, 11/2014.
  • Ray, B.L., Ferguson, E.M., Knudsen, J.K., Porter, R.J., and Mason, J. “Performance-Based Analysis of Geometric Design of Highways and Streets,” NCHRP Report 785, National Cooperative Highway Research Program, Transportation Research Board, Washington, D.C., 2014. Published, 10/2014.
  • Tasic, I., Musunuru, A., and Porter, R.J. “Quantifying Accessibility of Non-Motorized Transportation Modes in Recreational Areas: Case Study of Mill Creek Canyon, Utah,” In Journal of Park and Recreation Administration, Vol. 32, No. 3, 2014, pp. 49-73. Published, 09/2014.
  • Zlatkovic, M. and Porter, R.J. “Lessons Learned – Pavement Marking Warranty Contract,” Report No. UT-13.16, Utah Department of Transportation, Salt Lake City, UT, 2013. Published, 12/2013.
  • Carlson, P., Park, E.S., Pike, A., Porter, R.J., Miles, J., Boulanger, B., Smadi, O., Hawkins, N., Chalmers, S., Darmiento, F., Burde, A., Kuhn, B., and Ealding, W. “Pavement Marking Demonstration Projects: State of Alaska and State of Tennessee – Final Report,” Report No. FHWA-HRT-12-048, Federal Highway Administration, Office of Safety Research and Development, McLean, VA, 2013. Published, 11/2013.
  • Wood, J.S.* and Porter, R.J. “Safety Impacts of Design Exceptions on Non-Freeway Segments,” In Transportation Research Record, Journal of the Transportation Research Board No. 2358, 2013, pp. 29-37. Published, 11/2013.
  • Himes, S.C., Donnell, E.T., and Porter, R.J. “Posted Speed Limit: To Include or Not to Include in Operating Speed Models,” In Transportation Research Part A: Policy and Practice, Volume 52, 2013, pp. 23-33. Published, 05/2013.
  • Porter, R.J. and Wood, J.S.* “Exploring the Endogeneity of Macroscopic Speed Parameters: Empirical Study during Low Volume Conditions in Construction Work Zones,” In Transportation Letters: The International Journal of Transportation Research, Volume 5, Issue 1, 2013, pp. 27-37. Published, 01/2013.
  • Le, T.Q.* and Porter, R.J. “Safety Effects of Cross Section Design on Urban and Suburban Roads,” Compendium of Papers from the 92nd Annual Meeting of the Transportation Research Board, Washington, D.C., January 13-17, 2013.. Published, 01/2013.
  • Le, T.Q.* and Porter, R.J. “Safety Evaluation of Geometric Design Criteria for Spacing of Entrance-Exit Ramp Sequence and Use of Auxiliary Lanes,” In Transportation Research Record, Journal of the Transportation Research Board No. 2309, 2012, pp. 12-20. Published, 12/2012.
  • Porter, R.J., Donnell, E.T., and Mason, J.M. “Geometric Design, Speed, and Safety,” In Transportation Research Record, Journal of the Transportation Research Board No. 2309, 2012, pp. 39-47. Published, 12/2012.
  • Park, E.S., Carlson, P.J., Porter, R.J., and Andersen, C.K. “Safety Effects of Wider Edge Lines on Rural, Two-Lane Highways,” In Accident Analysis and Prevention 48, 2012, pp. 317-325. Published, 09/2012.
  • Porter, R.J. and Wood, J.S.* “Safety Impacts of Design Exceptions in Utah,” Report No. UT-12.10, Utah Department of Transportation, Salt Lake City, UT, 2012. (also has dual Report No. MPC 12-248, Mountain Plains Consortium, Fargo, ND, 2012). Published, 07/2012.
  • Le, T.Q.*, Lund, C.K.*, and Porter, R.J. “Safety Effects of Cross Section Design on Urban and Suburban Roads,” Proceedings of the 4th Urban Street Symposium, Chicago, IL, June 24-27, 2012. Published, 06/2012.
  • Himes, S.C., Donnell, E.T., and Porter, R.J. “New Insights on Evaluations of Design Consistency for Two-Lane Highways,” In Transportation Research Record, Journal of the Transportation Research Board No. 2262, 2011, pp. 31-41. Published, 12/2011.
  • Fitzpatrick, K., Porter, R.J., Pesti, G., Chu, C.L., Park, E.S., and Le, T.Q.* “Guidelines for Spacing between Freeway Ramps,” In Transportation Research Record, Journal of the Transportation Research Board No. 2262, 2011, pp. 3-12. Published, 12/2011.
  • Przybyla, J.*, Porter, R.J., Taylor, J.*, Nevers, B., and Zhou, X. “Evaluating Roadway Safety Improvement in a Traffic Assignment Framework,” Proceedings of the 3rd International Conference on Road Safety and Simulation, Indianapolis, Indiana, September 14-16, 2011. Published, 09/2011.
  • Hassan, Y., Sarhan, M., and Porter, R.J. (eds.) “Modeling Operating Speed, Synthesis Report,” Transportation Research Circular E-C151, Committee on Operational Effects of Geometrics, Transportation Research Board, Washington, D.C., July 2011. Published, 07/2011.
  • Porter, R.J. and T.Q. Le. “Performance-Based Safety Evaluation of Requests for New Access or Modifications to Existing Access on Freeways,” Proceedings of the 1st International Conference on Access Management, Athens, Greece, June 15-17, 2011. Published, 06/2011.
  • Ray, B.L., Schoen, J., Jenior, P., Knudsen, J., Porter, R.J., Leisch, J.P., Mason, J.M., Roess, R. “Guidelines for Ramp and Interchange Spacing,” NCHRP Report 687, National Cooperative Highway Research Program, Transportation Research Board, Washington, D.C., 2011. Published, 03/2011.
  • Ray, B.L., Schoen, J., Jenior, P., Knudsen, J., Porter, R.J., Leisch, J.P., Mason, J.M., Roess, R. “Determining Guidelines for Ramp and Interchange Spacing,” NCHRP Web Only Document 169, National Cooperative Highway Research Program, Transportation Research Board, Washington, D.C., 2011. Published, 03/2011.
  • Pesti, G., Chu, C.L., Fitzpatrick, K., Porter, R.J., and Le, T.Q.* “Microscopic Simulation of Weaving Traffic between Freeway Ramps,” Compendium of Papers from the 90th Annual Meeting of the Transportation Research Board, Washington, D.C., January 23-27, 2011. Published, 01/2011.
  • Donnell, E.T., Porter, R.J. and Shankar, V.N. “A Framework for Estimating the Safety Effects of Roadway Lighting at Intersections,” In Safety Science 48, 2010, pp. 1436-1444. Published, 12/2010.
  • Carlson, P., Park, E.S., Andersen, C., Kuhn, B., Pike, A., Miles, J., Brydia, R., Ealding, W., and Porter, R.J. “Pavement Marking Demonstration Project: State of Alaska and State of Tennessee – Report to Congress,” Report No. FHWA-HRT-09-039, Federal Highway Administration, Office of Safety Research and Development, McLean, VA, 2010. Published, 04/2010.
  • Carlson, P.J., Park, E.S., Porter, R.J. and Andersen, C.K. “Safety of Wider Edge Lines in the USA,” Proceedings from the 15th International Conference of Road Safety on Four Continents, Abu Dhabi, the United Arab Emirates, March 28-30, 2010. Published, 03/2010.
  • Fitzpatrick, K., Porter, R.J., Pesti, G., Chu, C.L., Park, E.S., and Le, T. “Guidelines for Spacing between Freeway Ramps,” Report No. FHWA/TX-10/0-5860-1, Texas Transportation Institute, College Station, TX, 2010. Published, 03/2010.
  • Venglar, S.P., Porter, R.J. and Ballard, A.J. “Establishing Advisory Speeds on Freeway Exit Ramps,” Compendium of Papers CD-ROM from the 89th Annual Meeting of the Transportation Research Board, Washington, D.C., January 10-14, 2010. Published, 01/2010.
  • Donnell, E.T., Himes, S.C., Mahoney, K.M., Porter, R.J. McGee, H. “Speed Concepts: Informational Guide,” Report No. FHWA-SA-10-001, Federal Highway Administration Office of Safety, Washington, DC, 2010. Published, 09/2009.
  • Venglar, S.P., Porter, R.J., Obeng-Boampong, K.O. and Kuchangi, S. “Establishing Advisory Speeds on Non-Direct Connect Ramps: Technical Report,” Report No. FHWA/TX-09/0-6035-1, Texas Transportation Institute, College Station, TX, 2009. Other, 2009.
  • Ullman, G.L., Porter, R.J. and Karkee, G. “Implementation Guide for Monitoring Work Zone Safety and Mobility Impacts,” Report No. FHWA/TX-10/0-5771-P1, Texas Transportation Institute, College Station, TX, 2009. Other, 2009.
  • Ullman, G.L., Porter, R.J. and Karkee, G. “Monitoring Work Zone Safety and Mobility Impacts in Texas,” Report No. FHWA/TX-09/0-5771-1, Texas Transportation Institute, College Station, TX, 2009. Other, 2009.
  • Donnell, E.T., Himes, S.C., Mahoney, K.M. and Porter, R.J. “Understanding Speed Concepts: Key Definitions and Case Study Examples,” In Transportation Research Record, Journal of the Transportation Research Board No. 2120, 2009, pp. 3-11. Published, 2009.