Mark Bradley

Senior Director

Mark is an internationally recognized leader in advanced methods for travel demand forecasting. As an original developer of Daysim, one of the leading modeling platforms for activity-based travel demand modeling, Mark leads the ongoing application and development of Daysim for RSG’s clients. Mark is also an expert in the design of various types of travel surveys, and is a frequent expert advisor on RSG’s travel survey projects.

He joined RSG in 2012, bringing nearly 30 years of experience developing travel demand forecasting methods and tools for clients in many countries. Mark was first introduced to travel demand modeling as a student at Dartmouth College by professor, Tom Adler, founder and current President of RSG. After working for Cambridge Systematics and the University of Oxford, Mark became a founder of Hague Consulting Group in 1986, working for clients such as Eurotunnel and various national railways and ministries of transportation around Europe. In 1995, Mark returned to the U.S. and was an independent consultant based in California for 17 years, collaborating with RSG on many projects during that period. Mark moved to Santa Barbara, CA in 2002, and enjoys hiking, kayaking, and painting.


MS, Resource Systems and Policy Design, Dartmouth College Thayer School of Engineering, Hanover, NH MA, Mythological Studies with an Emphasis in Depth Psychology, Pacifica Graduate Institute, Santa Barbara, CA. BS, Operations Research and Industrial Engineering, Cornell University, Ithaca, NY


Outwater, M., M. Bradley, et al. “California Statewide Model for High-Speed Rail.” Presented at the 11th World Conference on Transportation Research, Berkeley, California, June 2007. Journal of Choice Modeling, Volume 3, No 1, March 2010.

Bradley, M., J. Bowman, and B. Griesenbeck. “SACSIM: An Applied Activity-based Model System with Fine-level Spatial and Temporal Resolution.” Journal of Choice Modeling, 3-1 (2009): p. 5-31.

Frank, L., M. Bradley, S. Kavage, J. Chapman, and T K. Lawton. “Urban Form, Travel Time and Cost Relationships with Tour Complexity and Mode Choice.” Transportation, 35-1 (2008): p.37-54.

Bradley, M., and J. Bowman. “A Summary of Design Features of Activity-based Microsimulation Models for U.S. MPOs.” Presented at the Conference on Innovations in Travel Demand Modeling, Austin, TX, 2006.

Bradley, M. “Process Data for Understanding and Modeling Travel Behaviour.” In Travel Survey Methods: Quality and Future Directions. P. Stopher & C. Stecher, Eds.(2006): p. 491–510. Amsterdam: Elsevier.

Bradley, M., and P. Vovsha. “A Model for Joint Choice of Daily Activity Pattern Types of Household Members.” Transportation, 32-5 (2005): p.545–571. Amsterdam: Springer.