Our Mission

The mission of the Transportation Management Association of Chester County (TMACC) is to activate, foster and facilitate cooperation between the public and private sectors of Chester County; to identify, evaluate and analyze significant transportation issues and to recommend solutions that reduce congestion and improve air quality.  

Our History

TMACC was founded in May of 1992 as the Chester Valley TMA and consisted of 14 Founding Members, which include some of our current members today: Chester County Intermediate Unit, Great Valley Regional Chamber of Commerce, Krapf’s Coaches, Inc., PennState Great Valley, and Saul, Ewing, Remick & Saul.  In June of 1995, the Chester Valley TMA Board of Directors changed our name to the Transportation Management Association of Chester County to better capture the members we wanted to acquire. 


Today, TMACC represents the expanding region of Chester County and continues to advocate for sustainable transportation practices and connectivity.   TMACC’s membership represents over 20,000 commuters in Greater Philadelphia and includes a range of organizations in engineering, planning, law, consumer goods, finance, hospitality, education and more.  

Our Staff

Tim Phelps.jpg
John Meisel.jpg
Jon Ewald Headshot 2.jpg

John Meisel

Manager of Transportation Operations and Planning


Jonathan Ewald

Manager of Corporate & Community Relations


Diane Minka.jpg

Diane Minka

Customer Service Representative


Laura Guman

Office Administrator



Board of Directors

Board of Directors.jpg

Nathan M. Cline


Kristin S. Camp

Buckley, Brion, McGuire & Morris, LLP 

John Nagel

East Whiteland Township

Randy Waltermyer


Traffic Planning and Design, Inc.

Greg Davis

Saul Ewing Arnstein & Lehr LLP

Matt Baumann

Tredyffrin Township

Catherine Bianco

Workspace Property Trust   

Bonny Coddaire


Pamela Conti


John Felicetti

Penn Medicine Chester County Hospital

Neal Fisher

Hankin Group

Erica Mcleod

Penn State Great Valley

Mike Grigalonis

Chester County Economic Development Council 

Kerry S. Jones

Immaculata University 

Bruce Masi

Gannett Fleming

Patricia Shields

West Chester University 

Matthew Kozsuch

McMahon Associates, Inc. 

Thomas Lindsey

KCI Technologies

Joanne Walter


Gene Blaum

Ex Officio


Amy Bernknopf

Ex Officio


Mark Cassel

Ex Officio


Commissioner Josh Maxwell

Ex Officio

Chester County Commissioner 

Jackie Koons-Felion

Ex Officio


Brian N. O'Leary

Ex Officio

Chester County Planning Commission

Gary Smith

Board Emeritus

Chester County Economic Development Council

TMACC's Annual Investors

TMACC thanks its 2022 Annual Investors!   These companies support TMACC in all endeavors and are partnering with us to improve mobility and air quality in Chester County.