graphical image of female's profile with traffic symbols surrounding her head

Session No. 3D

Session Title: Traffic Modeling — Origin to Destination

Session Description: Presenters will cover the various elements needed to develop and use a calibrated traffic model for alternatives analysis and signal timing.

Moderator Name: Orla Pease, P.E., P.T.O.E., AECOM               

Origins of Traffic Projects and Suitable Data Collection Procedures, Lindsey Klein, Owner, Imperial Traffic & Data Collection

Lessons learned, Methodologies for Calibrating Complex Models and the Route We Need to Take to Achieve Calibration, Andy Rebovich PE, PTOE, Senior Traffic Engineer, AECOM, and Rachel Brownlee, Senior Traffic Engineer, AECOM 

Implementation and After Studies for Retiming Projects in the CityPat Callahan, Civil EngineerCity of Philadelphia, Traffic Engineering Unit

Speaker Bios

Lindsey Klein is the founder of Imperial Traffic & Data Collection based in Cherry Hill, New Jersey. She is a graduate from the University of Delaware. Prior to establishing Imperial, Mrs. Klein gained 12 years of experience working as a Traffic Operations and Transportation Project Engineer at Taylor Wiseman & Taylor in Mt. Laurel, New Jersey. In two short years, Klein has grown Imperial to four staff members, and has delivered over 175 projects for various clients. She has managed projects in New Jersey ranging from Cape May to Morris County, as well as projects in Pennsylvania, working as far west as Mile Marker 8 on the Pennsylvania Turnpike. Klein is currently Data Collection Task Manager on the DVRPC City of Camden Traffic Signal Project, DVRPC South Jersey Signal Retiming Contract, PennDOT District 6-0 Signal Retiming Contract, and Morris County ATR Project. Klein earned her IMSA Traffic Signal Technician Level II certification earlier this year.

Rachel Brownlee and Andy Rebovich are both Senior Traffic Engineers at the AECOM Pittsburgh office with 26 years of combined experience. Both have extensive experience ranging from traffic analysis and traffic simulation, to traffic design. 

Pat Callahan manages the City of Philadelphia’s Traffic Operations Center. His responsibilities include reviewing ITS, interconnect and signal plans for projects citywide. Callahan tracks the status of signals integrated into the City’s ATMS system, identifying fiber breaks and other communication issues and working with City maintenance, contractors and PennDOT to improve the City’s percentage of online signals. The favorite part of his job is analyzing and optimizing progression on a new corridor once it has been freshly integrated into the City’s ATMS system. He has Bachelor's and Master's degrees in Civil Engineering from Drexel University. 



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