Journal Articles
Tabitha Combs and Carlos Pardo (2021). Shifting Streets COVID-19 Mobility Data: Findings from a global dataset and a research agenda for transport planning and policy. Transportation Research Interdisciplinary Perspectives 9. (open access)
Tabitha Combs and Noreen McDonald (2021). Driving change: exploring the adoption of multimodal local traffic impact assessment practices. Journal of Transportation and Land Use, 14(1): 47-64. (open access)
Noreen McDonald and Tabitha Combs (2020). Reinventing TIA: contemporary approaches to addressing the traffic impacts of urban development. ITE Journal, 90(9): 46-49.
Tabitha Combs, Noreen McDonald, & William Leimenstoll (2020). Evolution in local traffic impact assessment practices in three US states. Journal of Planning Education and Research. (open access)
Tabitha Combs, Laura Sandt, Michael Clamann, and Noreen McDonald (2019). Automated Vehicles and Pedestrian Safety: Exploring the Promise and Limits of Pedestrian Detection. American Journal of Preventive Medicine 56(1): 1-7. (open access)
Tabitha Combs (2017). Examining changes in travel patterns among lower wealth households after BRT investment in Bogotá, Colombia. Journal of Transport Geography 60: 11-20.
Tabitha Combs, Elizabeth Shay, David Salvesen, Carl Kolosna, and Michelle Madeley (2016). Understanding the multiple dimensions of transportation disadvantage: the case of rural North Carolina. Case Studies on Transport Policy 4(2): 68-77.
Elizabeth Shay, Tabitha Combs, Daniel Findley, Carl Kolosna, Michelle Madeley, and David Salvesen (2016). Identifying transportation disadvantage: Mixed-methods analysis combining GIS mapping with qualitative data. Transport Policy 48: 129–138.
David C. Schwebel, Tabitha Combs, Daniel A. Rodríguez, Joan Severson, and Virginia Sisiopiku (2016). Community-based pedestrian safety training in virtual reality: A pragmatic trial. Accident Analysis & Prevention 86: 9–15.
Philip Berke, Galen Newman, Jaekyung Lee, Tabitha Combs, Carl Kolosna, and David Salvesen (2015). Evaluation of Networks of Plans and Vulnerability to Hazards and Climate Change: A Resilience Scorecard. Journal of the American Planning Association 81(4): 287–302. pdf
Tabitha Combs and Daniel A. Rodríguez, 2014. Joint impacts of Bus Rapid Transit and urban form on vehicle ownership: New evidence from a quasi-longitudinal analysis in Bogotá, Colombia. Transportation Research Part A: Policy and Practice 69: 272–285.
Elizabeth Shay, Tabitha Combs, David Salvesen, Diane DeTrizio, and Jennifer Horney, 2014. Assessing disaster preparedness of officials and residents in two North Carolina counties. Journal of Geography & Natural Disasters 4(2): 1–8.
Noreen McDonald, David Salvesen, Renee Kuhlman, and Tabitha Combs (2014). The impact of changes in state minimum acreage policies on school siting practices. Journal of Planning Education & Research 34(2): 169–179.
Noreen McDonald, Amanda Dwelley, Tabitha Combs, Kelly Evenson, and Richard Winters (2011). Reliability and validity of the Safe Routes to School parent and student surveys. International Journal of Behavioral Nutrition & Physical Activity 8(1): 1–8. (open access)
Refereed Presentations
Dan Gelinne, Katie Harmon, and Tabitha Combs (Aug 4, 2021). “Data don’t drive: the limitations of crash data for understanding community pedestrian and bicycle safety and mobility needs.” Virtual presentation at the Association of Pedestrian and Bicycle Professionals Virtual Conference.
Tabitha Combs & Elizabeth Shay (2019). “Who is this infrastructure for? Identifying municipal strategies for CAV-readiness through a transportation justice lens.” Lectern presentation at the Association of Collegiate Schools of Planning Annual Conference, Greenville SC.
Tabitha Combs, Lakisha Hull, & Jamie Henson (2019). “Upgrading the state of the practice: Traffic impact assessment in North Carolina.” Presentation and panel discussion at the annual meeting of the American Planning Association – North Carolina Chapter, Wilmington NC.
Wesley Kumfer, Tabitha Combs, Seth LaJeunesse, & Michael Clamann (2019). “Emerging trends in transportation safety and the need for systemic resilience.” Presentation and panel discussion at the North Carolina Traffic Safety Conference & Expo, Raleigh NC.
Tabitha Combs (2019). “Pedestrians and AVs: A safer future?” Lectern presentation at the NCDOT Research and Innovation Summit, Greensboro NC.
Tabitha Combs, Noreen McDonald, William Leimenstoll, & Ruth Steiner (2019). “Innovation in municipal traffic impact assessment approaches: a case study in North Carolina.” Poster presentation at the Transportation Research Board Annual Meeting, Washington DC.
Tabitha Combs, T. William Lester, & Wenwen Zhang (2018). “How can planning theory inform the challenges of planning for automated vehicles?” Roundtable discussion at the Association of Collegiate Schools of Planning (ACSP) Conference, Buffalo NY.
Tabitha Combs & Noreen McDonald (2018). “What drives cities to consider and adopt innovative approaches to traffic impact assessment?” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Buffalo NY.
Ruth Steiner, Xinyuan Yang, Noreen McDonald, & Tabitha Combs (2018). “The role of state practices in achieving sustainable transportation.” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Buffalo NY.
Tabitha Combs, Laura Sandt, Noreen McDonald, & Michael Clamann (2018). “Limitations in Detection Technologies for Automated Driving Systems and Implications for Pedestrian Safety.” Lectern presentation at the Transportation Research Board (TRB) Annual Meeting, Washington DC.
Tabitha Combs, Elizabeth Shay (2017). “Anticipating travel behavior change among relocating university students.” Poster presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Denver CO.
Nader Afzalan, Tabitha Combs, & Robert Goodspeed (2017). “Developing academic cross-disciplinary programs: opportunities for planning.” Roundtable discussion at the Association of Collegiate Schools of Planning (ACSP) Conference, Denver CO.
Elizabeth Shay, Tabitha Combs (2017). “The promise of accessibility: connections between anticipated and actual travel patterns after residential relocation among university students and staff.” Lectern presentation at the North Carolina Association of Municipal Planning Organizations 2017 Conference, New Bern NC.
Hamish Rennie, Tabitha Combs, & Suzanne Valance (2016). “From disaster research to resilience pedagogy: Educating New Zealand’s 1st ‘Masters of Disaster,” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Portland OR.
Tabitha Combs (2015). “Examining changes in travel patterns among lower wealth households after BRT investment in Bogotá, Colombia,” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Houston TX.
Elizabeth Shay, Tabitha Combs, Daniel Findley, Carl Kolosna, Michelle Madeley, & David Salvesen (2015). “Identifying transportation disadvantage: Mixed-methods analysis combining GIS mapping with qualitative data.” Lectern presentation at the Transportation Research Board (TRB) Annual Meeting, Washington, D.C.
David C. Schwebel, Tabitha Combs, Daniel A. Rodríguez, Virginia Sisiopiku, & Joan Severson (2015). “Evaluating virtual reality to teach children pedestrian safety: Initial results from a pragmatic trial.” Lectern presentation at the University Transportation Centers Conference for the Southeast Region, Birmingham, AL.
Manasvee Godbole, Daniel A. Rodríguez, Tabitha Combs, Virginia Sisiopiku, & David C. Schwebel (2015). “Effect of training in virtual reality on children’s self-efficacy regarding pedestrian behavior.” Lectern presentation at the University Transportation Centers Conference for the Southeast Region, Birmingham, AL.
Anna Johnston, Virginia Sisiopiku, Daniel A. Rodríguez, Tabitha Combs, Mostafa Emeira, Joan Severson, & David C. Schwebel (2015). “Teaching pedestrian safety in virtual reality: a community-university collaboration.” Lectern presentation at the University Transportation Centers Conference for the Southeast Region, Birmingham, AL.
Jenni Rouse, Rachel Smith, Mandy Sessions, Tabitha Combs, Daniel A. Rodríguez, Virginia Sisiopiku, & David C. Schwebel. (2015). “Are traffic safety rules and experience sufficient to make children safe pedestrians?” Lectern presentation at the University Transportation Centers Conference for the Southeast Region, Birmingham, AL.
Jiaben Shen, Virginia Sisiopiku, Daniel A. Rodríguez, Tabitha Combs, Manasvee Godbole, & David C. Schwebel (2015). “The influence of self-efficacy and perceived safety on children’s frequency of walking to/from school.” Lectern presentation at the University Transportation Centers Conference for the Southeast Region, Birmingham, AL.
Hayley Wells, Jenni Rouse, Anna Johnston, Virginia Sisiopiku, Daniel A. Rodríguez, Tabitha Combs, & David C. Schwebel (2015). “Associations between self-efficacy and children’s pedestrian safety following training.” Lectern presentation at the University Transportation Centers Conference for the Southeast Region, Birmingham, AL.
Tabitha Combs, David Salvesen, Elizabeth Shay, & Michelle Madeley (2014). “Qualitative research methods for identifying transportation deserts.” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Philadelphia PA.
Elizabeth Shay, David Salvesen, Tabitha Combs, Michelle Madeley, & Carl Kolosna (2014). “Transportation disadvantage in five rural North Carolina Counties.” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Philadelphia PA.
Philip Berke, David Salvesen, Tabitha Combs, & Carl Kolosna (2014). “Planning for resiliency in the age of climate change.” P Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Philadelphia PA.
Tabitha Combs & Daniel A. Rodríguez (2013). “Joint impacts of bus rapid transit and urban form on vehicle ownership among low income households: new evidence from a quasi-longitudinal analysis in Bogotá, Colombia.” Poster presentation at the Transportation Research Board (TRB) 92nd Annual Meeting, Washington DC.
Tabitha Combs, Elizabeth Shay, & David Salvesen (2013). “Identifying transportation-disadvantaged populations: an equity-driven approach to understanding relationships among transportation supply, built environments, and mobility.” Lectern presentation at the North Carolina Association of Municipalities Conference, Winston Salem NC.
Tabitha Combs (2013). “Relationships among BRT access, mobility patterns, and motorization pressures among lower wealth households in Bogotá, Colombia.” Poster presentation at the University Transportation Centers Southeast Region Conference, Orlando FL.
Tabitha Combs, David Salvesen, & Elizabeth Shay (2013). “Identifying mobility gaps in North Carolina communities: a mixed-methods approach to understanding the relationships among transportation supplies, built environments, and mobility.” Lectern presentation at the University Transportation Centers Southeast Region Conference, Orlando FL.
Tabitha Combs (2012). “Can Bus Rapid Transit and urban form slow rising automobile dependence?” Lectern presentation at the Transportation Research Board (TRB) 91st Annual Meeting, Washington DC.
Tabitha Combs (2012). “Impacts of access to bus rapid transit and urban form on vehicle ownership in Bogotá, Colombia.” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Cincinnati OH.
Tabitha Combs (2011). “Impacts of Bus Rapid Transit access on changing household vehicle ownership levels in Bogotá, Colombia.” Lectern presentation at the Association of Collegiate Schools of Planning (ACSP) Conference, Salt Lake City UT.
Daniel A. Rodríguez, Tabitha Combs, Noreen McDonald, Marc Schlossberg, Jessica Greene, & Nico Larco (2011). “National evidence regarding behavior and physical activity in new urbanist neighborhoods.” Poster presentation at the Transportation Research Board (TRB) 91st Annual Meeting, Washington DC.
Book chapters
Justin M. Owens, Laura Sandt, Azra Habibovic, Sarah Rebolloso McCullough, Ryan Snyder, Robert Wall Emerson, Pravin Varaiya, Tabitha Combs, Fred Feng, Mohammed Yousuf, & Bernard Soriano (2019). Automated Vehicles & Vulnerable Road Users: Envisioning a Healthy, Safe and Equitable Future. In Road Vehicle Automation (Vol. 6). Springer.
Selected reports
Wesley Kumfer, Katie Harmon, Randa Radwan, Tabitha Combs, Cheng Ma, and Raghavan Srinivasan (2021). “New Mobility Trend Insights in North Carolina.” Technical Brief No. 3; C19 Mobility and Health). Highway Safety Research Center.
Laura Sandt, Tabitha Combs, & Jesse Cohn (2016). “Pursuing equity in pedestrian & bicycle planning.” Technical report prepared for Federal Highway Administration. Available: fhwa.dot.gov/environment/bicycle_pedestrian/resources/equity_paper/
Tabitha Combs, Carl Kolosna, Philip Berke, & David Salvesen (2014). “Development of the Spatial Index of Social Vulnerability for Resiliency Planning.” Technical report prepared for the Department of Homeland Security.
Webinars and trainings
Tabitha Combs (July 8, 2021). “COVID-19 Mobility Adaptations: Building a knowledge base for new practices.” Webinar, Eno Transportation Center.
Tabitha Combs, Matt Ainsley, Warren Logan, and Clara Cantor (June 9, 2021). “Open Streets – what happened, what did we learn and what’s next?” Webinar, America Walks.
Tabitha Combs (Jan 2021). “COVID-19: What happened on the street?” In Workshop 1039 – Rapid Repurposing of Urban Streets for COVID-19 Emergency Response. Workshop, Transportation Research Board Annual Meeting.
Ruth Steiner and Tabitha Combs (October 30, 2020). “New Approaches to Conducting Traffic Impact Assessment (TIA) in the SE United States.” Webinar, STRIDE.
Seth LaJeunesse, Wesley Kumfer, & Tabitha Combs (August 20, 2020). “Where do you go and how do you get there? The art and science of effective travel survey design.” Webinar, North Carolina Traffic Safety Conference and Expo, online.
Wesley Kumfer, Tabitha Combs, & Peter Koonce (August 12, 2020). “Evaluating innovations in traffic impact assessment to facilitate safety and operations integration.” Workshop, ITE Annual Meeting, online.
Tabitha Combs, Dan Gelinne, & Heyden Black (2020). “Research in Action: Trends in how municipalities are addressing increased demand for safe public space.” Webinar, America Walks.
Aidil Ortiz, Tabitha Combs, & Warren Logan (2020). “How travel is changing in the time of COVID-19,” Webinar, Bike Durham.
Tabitha Combs, Kristina Currans, & Melissa McMahon (2019). “Traffic Impact Assessment: Two studies exploring the development and implementation of innovations in TIA in the US.” Webinar, Transportation Research Board Land Development Committee ADD30.
Tabitha Combs (2012). “Transportation equity: issues and approaches to reduce disparities in access to pedestrian and bicycle facilities and programs.” Webinar. Livable Communities Webinar Series.
Invited lectures and presentations
Tabitha Combs, Heidi Perov Perry, & Jesse Mintz-Roth (September 15, 2020). “Walking is the new driving: let’s make it safe.” Salon discussion (virtual) presented at the AARP Livable Communities National Conference, online.
Tabitha Combs (2020). “Pop-up infrastructure around the world.” Presented at the Post-Corona Mobility Conference (virtual) presented by Syklistenes Landsforening. Oslo, Norway.
Tabitha Combs, Meredith Broussard, Giovanni Circella, Ronald Arkin, & Lee Vinsel (2019). Keynote panelist at the Challenges and Choices Conference Presented by the Virginia Polytechnical Institute, Blacksburg VA.
Kelly Evenson, Tabitha Combs (organizer), Danielle Spurlock, Allie Thomas, Leah Frehrichs (2019). “Inspiring and enabling collaboration and engagement.” Panel session at the Safe Systems Summit presented by the Collaborative Sciences Center for Road Safety. Durham NC.
Tabitha Combs (2017). “Evaluating equity in the distribution of mobility benefits: lessons from TransMilenio.” Presented at Lincoln Institute of Land Policy Symposium on Transportation Innovations and Urban Land in Latin America, Berkeley CA and the Department of Planning & Geography, Appalachian State University, Boone NC.
Tabitha Combs, Danielle Spurlock, Elizabeth Delmelle, Ryan Gravel, & John Cock (2018). “Greenways & Gentrification.” Featured panel discussion at the Carolina Thread Trails Annual Forum. December 2018, Mooresville NC.
Tabitha Combs (2018). “Hidden equity challenges of an AV-dominant transport system: tradeoffs between access to opportunity and safety for vulnerable pedestrians.” Lectern presentation at the Automated Vehicle Symposium, San Francisco CA.