Transportation Modeling Staff

The Transportation Modeling Staff focuses on forecasting transportation related scenarios for the San Antonio-Bexar County Metropolitan Planning Organization (SA-BC MPO) long-range plan.  They look at how many people, households, employment, most importantly how many vehicles will be driving our roadway in the next 25 years.  Consequently, they assist transportation planners in determining the types of improvement needed to keep you moving.

Transportation Modeling Supervisor

Zachary Graham

Transportation Modeling Supervisor

Senior Transportation Modeler
Phone:230-6907
Email: graham@sametroplan.org

Zack joined the SA-BC MPO in April 2007 as Senior Transportation Modeler and leads its transportation modeling efforts by utilizing his twenty plus years of transportation modeling experience. He led demand modelers and traffic analysts in support of urban area modeling and corridor analysis for air quality attainment while employed at the Texas Department of Transportation. In addition, he provided technical support, training, and guidance for urban area travel demand modeling development and applications while employed at the Texas Transportation Institute.

Gregory D. Ruiz

Transportation Modeler I
Phone: (210) 230-6912
Email: ruiz@sametroplan.org

Gregory David Ruiz is a native of San Antonio and earned a Bachelor of Arts in Geography-Cartography/Geographic Information Systems from Texas State University-San Marcos. Before joining the SA-BC MPO in September 2007, he worked for the Mexican American Legal Defense Fund’s statewide redistricting efforts and the City of San Antonio’s Planning and Public Works departments. He works closely with our Senior Transportation Modeler in providing modeling support for our Metropolitan Transportation Plan.