Data Calibration and Real-World Models

The purpose of this workshop is to provide participants with detailed guidance as it relates to data collection, analysis and calibration of real-world models.  Participants will be provided several real-world examples relating to planning, freeway analysis and arterial evaluations.  This workshop is intended for staff that gets involved with performing traffic analysis and may need to understand how to accurately calibrate various types of evaluations.

Moderator: Todd Trautz, P.E., PTOE, Michael Baker International     

Traffic Analysis Tools and VISSIM Calibration

  • Jessica Belowich, PE, PTOE, Traffic Department Manager, Michael Baker International       

Calibrating FREEVAL-PA with Probe-Based Speed and Travel Time Data             

  • Bastian Schroeder, P.E., PhD, Director of Research, Kittelson & Associates, Inc.       

Arterial Calibration         

  • John Albeck, PE, PTOE, Traffic Operations Program Manager, Iteris, Inc.       

Regional Planning Model Calibration

  • Dan Szekeres, Senior Associate, Michael Baker International       


Jessica Belowich serves as the traffic department manager for Michael Baker's Moon Township office. Belowich is experienced in both transportation planning and traffic and highway design engineering and management. Belowich's strengths lie in operational analysis and alternatives investigation. Belowich has worked on department of transportation projects in Pennsylvania, Texas, Mississippi, and Arizona.

John A. Albeck, P.E., PTOE, serves as a Traffic Operations Program Manager for Iteris’ Consulting Solutions division. He has more than 30 years of experience specializing in the fields of traffic signal timing and optimization, traffic training course development, traffic modeling, traffic software research, development, documentation and support.

Bastian Schroeder is a Senior Principal Engineer in Kittelson’s Wilmington, North Carolina office and lead’s the company’s research practice. He has a passion for developing solutions to complex problems across all areas of transportation with a focus on advancing agency processes and integrating research into standard practices. He was centrally involved in the development of the FREEVAL-PA software tool and is a contributing author to the HCM2010 and 6th Edition Highway Capacity. He is a member of the TRB Committee on Highway Capacity and Quality of Service as well as the TRB Simulation Committee.

Dan Szekeres is a Senior Associate at Michael Baker International who specializes in a broad range of technical planning services including travel demand modeling, performance measure evaluations, transportation resiliency, air quality planning, and data processing and visualization. His experience encompasses regional long-range plans, congestion management processes, freight plans, corridor and traffic operation studies, safety audits, environmental justice studies, and other transportation planning studies.




The Transportation Engineering and Safety Conference (TESC) attracts professionals from throughout Pennsylvania, the mid-Atlantic region, and the country. It is an authoritative source of information on pressing issues from some of the foremost experts in transportation today.

Thomas D. Larson Pennsylvania Transportation Institute

201 Transportation Research Building

The Pennsylvania State University

University Park, PA 16802-4710

Phone: 814-865-1891