Abigail Rosenson
Abigail Rosenson is a skilled project manager and an expert in data collection and analysis. She manages household and person-based travel surveys using rMove™, RSG's location-aware market research smartphone app. She has performed market research work for academics, the private sector, and public agencies of varying sizes in the United States, Canada, and Australia. Abby excels at innovative survey design and creating repeatable processes that decrease respondent burden and improve data quality.
Prior to joining RSG, Abby worked with (and later volunteered for) KABOOM! where she co-led volunteers through high-profile community and corporate volunteer projects to help end playspace inequities for underserved communities. She maintains a Human Research IRB Certification from the Collaborative Institutional Training Initiative (CITI Program) and is a member of the Transportation Research Board’s Standing Committee on Travel Survey Methods (AEP25).
Outside of work, Abby enjoys hiking, playing tennis, gardening, and exploring DC’s many museums and cultural venues.
John (Jay) Evans, PE, AICP
Jay Evans is the Chief Operating Officer for RSG, addressing successful delivery of projects across all markets through supportive business operations and sustainable leverage and growth of our most important asset – our people. Jay has over 25 years of relevant experience, including in business operations, corporate finance, and consulting practice. He has performed consulting in both the public and private sectors, working in the transportation, telecommunication, energy, real estate, and consumer packaged goods industries. His project work has ranged from travel demand forecasting model development and application to strategic decision support for major investments. He has served in a variety of Project Management and Program Manager roles.
Prior to joining RSG, Jay was an operations executive and principal consultant with Cambridge Systematics. He was a lead author and co-Principal Investigator for Transit Cooperative Research Program (TCRP) Report 95, the Traveler Response Handbook, and contributing author and Principal-in-Charge for National Highway Cooperative Research Program (NCHRP) Report 716, Travel Demand Forecasting: Parameters and Techniques.
Jay enjoys city living with his partner of 25+ years in Washington, D.C. and engaging in interesting travel, bicycling adventures, and crossword puzzles.
Jay is a registered Professional Engineer in D.C., Florida, and Virginia.
Andrew Rohne
Andrew focuses on transportation data analytics. He is skilled at using R and Python to analyze and visualize data and is an expert at model implementation in Cube Voyager. He also has significant experience visualizing data on websites and working with GIS and GPS data.
Prior to joining RSG, Andrew was the transportation modeling manager at the Ohio-Kentucky-Indiana Regional Council of Governments where he directed all travel modeling data collection, analysis, application, and development. He was also a consultant at Tindale-Oliver & Associates where he focused on roadway performance analysis and long-range transportation planning.
Andrew is an active member of the Transportation Research Board and maintains the websites for the TRB Transportation Planning Applications Committee and Conference and the TRB Travel Survey Methods Committee. He also maintains the website for the Ohio Travel Demand Model User Group.
Andrew lives near Cincinnati, Ohio with his wife and three kids. He is an active runner, homebrewer, and amateur radio operator.
Ben Swanson
Ben leads traffic operations work at RSG. He is a skilled analyst and has been the principal investigator for hundreds of traffic operations and planning studies, specializing in microsimulation modeling and air quality analysis. Since joining RSG in 2007, he has managed projects for both the public and private sectors, including traffic impact studies for private development and detailed microsimulation models of highway interchanges for state agencies.
Outside of RSG, Ben serves as Secretary on the Board of the Vermont Institute of Transportation Engineers and as Board Chair for the Upper Valley Transportation Management Association. He enjoys riding his bikes (mountain and road), running on the local trail networks, and skiing with his wife and daughter. He is also perpetually and happily doing yardwork.
Jonathan Slason, PE
Jonathan is focused on the ways we fund, plan, and construct our transportation facilities. With over ten years of private consulting experience, including four years based in Auckland, New Zealand, Jonathan manages RSG’s east coast traffic operations, transportation planning, and engineering design practices. His experience is firmly rooted in the detailed design and operations of traffic signals, freeways, intersections, and pedestrian and bicycle facilities. The nexus of his interests and experience has served organizations and governments by producing actionable transportation plans and policies.
Jonathan has worked internationally on mixed use land use projects, assessed multi-modal capacity, and has developed several fair share contribution systems to fund local transportation improvements in addition to municipal and statewide impact fee systems in the Northeast and Florida. He has also led the transportation component of significant infrastructure projects and urban development, such as an New Lynn downtown redevelopment consisting of a new bus and rail station, numerous streets and signals, bridges, rail tunnel, and New Zealand’s first ‘shared street.’ His international experience includes developing urban transportation plans for municipalities throughout Belize; a circulation and traffic safety plan for a cruise ship terminal redevelopment in Port Villa, Vanuatu; and reviewing roadway upgrades in Samoa. He has also completed a number of planning and operational studies around land use intensification in Northwestern Vermont around Exit 12 in Williston, Exits 16 and 17 in Colchester, and Exit 20 in Saint Albans.
In his time outside of the office, Jonathan embraces many of the activities that Vermont offers—be it bicycling, hiking, telemarking, or snowboarding—and enjoying great locally produced food with his wife, their son, and friendly golden retriever, Teddy. A seventh-generation Vermonter, he works hard to support and maintain a quality place to live, work, and play, and always enjoys watching a solid All Blacks test.
Jonathan is a registered Professional Engineer in Vermont.
William Woodford
William Woodford is a national leader and expert who excels at collecting data, developing analysis tools, and applying these analytical methods to help transportation agencies plan their future.
Before joining RSG in 2011, Bill had over 30 years of consulting experience in the areas of travel demand forecasting, ridership forecasting, and transportation planning. His project experience includes planning of fixed guideway transit New Starts projects with a particular emphasis on transit ridership forecasting, alternatives analysis, and system analysis. He has consulted with many of the largest transit agencies in the United States including those in New York, Newark, Washington, Chicago, Denver, Los Angeles, and San Jose. He has worked with the Federal Transit Administration and Federal Highway Administration and state DOTs in New York, Virginia, and Maine.
Bill lives in the Washington, DC, area and spends his free time hiking, cycling, and relaxing on the Delaware shore.
Stephane Hess, PhD
Stephane Hess is a professor of choice modeling and the Director of the Choice Modelling Centre at the University of Leeds, where he is based in the Institute for Transport Studies. He is also a part-time professor of decision modeling, artificial intelligence (AI), and mobility research at Delft University of Technology. He is an honorary professor of choice modeling in the Institute for Transport and Logistics Studies at the University of Sydney and an honorary professor of modeling behavior in Africa at the University of Cape Town.
Stephane has published more than 150 journal papers, including several on the benefits of advanced structures in actual large-scale transport analyses. He has authored several book articles and made hundreds of presentations at international conferences. In addition to his academic research, he is also the founding editor-in-chief of the Journal of Choice Modelling and the founder and steering committee chair of the International Choice Modelling Conference. Together with David Palma, he is the author of Apollo, a highly flexible and powerful free tool for estimating and applying choice models.
Joel Freedman
Joel Freedman is a nationally recognized leader in the development and application of advanced travel demand forecasting models. With over 30 years of experience, he offers client services in all aspects of travel demand modeling: travel survey design, model design, estimation, software implementation, validation, and application.
Joel’s model development experience includes the development of trip- and activity-based travel demand models for some of the largest and most complex metropolitan regions in the United States and large-scale integrated models of land use and transportation for state departments of transportation. He has provided travel forecasting support on numerous successful transit New Starts projects and has been involved in a number of toll and revenue forecasts for public sector clients. Complimenting his modeling work, Joel is a skilled programmer with expertise in FORTRAN, C++, Java, and Python.
In addition to project work, Joel enjoys teaching and has served as an adjunct faculty member at Portland State University School of Urban Affairs and Department of Civil Engineering. He is a certified instructor for the National Highway Institute.
Joel lives in Portland, Oregon. He enjoys outdoor activities including hiking, backpacking, and skiing, and practices woodworking on the rare occasions the Pacific Northwest rain keeps him indoors.
Stephen Lawe
Stephen Lawe has been with RSG since 1988 and has played a pivotal role in the technical innovation and growth of the firm. From 2012 to 2024, he served as RSG’s Chief Executive Officer (CEO) and was responsible for company strategy and performance. After 12 years as CEO, Stephen transitioned away from company leadership to a Principal role where he focuses on thought leadership, working with clients to bring about transformative change, and mentoring the next generation of leaders.
His expertise in the analysis and development of public policy has been nationally recognized, and he is credited with the development of innovative tools and methodologies used by Fortune 500 companies in the formulation of their marketing strategies. He serves as a technical adviser on select projects and leads research to understand the challenges facing RSG's clients. In addition to his work with RSG, Stephen sits on the board of for-profit and non-for-profit companies and was an assistant professor at Vermont Law School.
Stephen enjoys volunteering and bringing his building and woodworking expertise to Habitat for Humanity and other similar non-for-profit organizations. He also enjoys spending time in the wilderness and engaging in numerous sports, including skiing, hockey, hiking, and biking with his family.
Thomas Adler, PhD
Thomas Adler is a founding leader of the RSG team and continues to guide the company through influential project work, innovative research and strategic direction. He has personally directed over 250 major projects and has more than 40 years of experience in developing and applying advanced models to client challenges. His project work ranges from feasibility studies for large infrastructure development, to marketing strategy studies for Global 100 companies, to detailed planning studies for both public and private sector initiatives.
Before cofounding RSG in 1986, Tom was a professor at Dartmouth College, teaching courses in consumer choice modeling, operations research, computer science, and engineering. He also served as director of the graduate program in resource policy at Dartmouth, and was the principal investigator for several large, federally-sponsored research projects. He continues this research today as principal investigator and task leader for six National Academies studies.
Tom enjoys skiing, skating, bicycling and hiking in Vermont and, with his wife of 40 years, visiting his three daughters (all management consultants, in London, New York, and Cambridge) and grandchildren.
Mark Fowler
Mark Fowler is an expert in market research and demand forecasting for new transportation services and infrastructure. He has a wealth of experience using stated preference techniques and discrete choice models to understand how consumers will respond to new travel options, including advanced air mobility services, autonomous ride-hailing, and urban congestion pricing plans. He has also applied his behavioral research expertise to the automotive and aviation industries, providing insights into consumer decision-making related to vehicle purchase, airport access, and flight itinerary selection.
As a researcher at RSG, Mark has led over 150 projects. He values the fact that the company is employee-owned. Mark is a trustee of the firm's employee stock ownership plan (ESOP) trust.
In his free time, Mark enjoys skiing, hiking, and running in the mountains of New England. He currently resides in Burlington, Vermont, with his wife, two children, and beloved dog.