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Contact Us

Contact us via our general National Traffic Law Center email at
or contact a specific staff member, listed below.

Joanne Thomka

Joanne Thomka Program Director

Ms. Thomka was a Senior Assistant District Attorney for the Onondaga County District Attorney’s Office in Syracuse, New York prior to joining the NTLC in 2006. She was the Bureau Chief of the DWI Unit from April 2000 – August 2006, responsible for the prosecution of all alcohol-related crimes and all vehicular fatalities. Ms. Thomka was previously a member of both the Special Victims and Violent Felony Bureaus within the Onondaga County District Attorney’s Office. She is a graduate of Salem State College and Vermont Law School.



Grace Broughton

Grace M. Broughton<empty>Staff Attorney

Grace M. Broughton is a staff attorney with NDAA’s National Traffic Law Center. 

Before her tenure at NDAA, Grace served as a policy specialist at Shared Hope International, conducting analyses on state human trafficking laws and providing legislative recommendations to set a national standard of protection against domestic minor sex trafficking.  Grace has also practiced as a pro bono attorney for Kids In Need of Defense, a non-profit organization, where she represented asylum applicants, trafficking victims, and unaccompanied immigrant children seeking refuge in the United States.  Grace began her legal career at The Law Offices of Bou and Bou, a civil litigation firm in Washington, District of Columbia. 

Originally from Toronto, Ontario, Grace earned a Bachelor of Laws from the University of Ottawa.  She then attended American University’s Washington College of Law, where she received her Juris Doctorate.  During her law school career, Grace was a member of the Latino Law Students Association and an editor for the American Jurist legal publication. Grace is admitted to practice law in Ontario and Maryland.



Duane M. Kokesch Senior Attorney

Duane M. Kokesch is a Senior Attorney with the National Traffic Law Center, a division of the National District Attorneys Association (NDAA). Mr. Kokesch has more than 16 years experience litigating criminal cases, beginning as an Assistant City Attorney with the City of Grand Rapids, Michigan where he prosecuted driving under the influence and other local crimes. He also worked as an Assistant Prosecuting Attorney in Calhoun County, Michigan and an Assistant Attorney General for the Office of the Attorney General for the District of Columbia. In 2006, Kokesch was appointed Chief of the Criminal Section for the Office of the Attorney General for the District of Columbia. As Chief, he oversaw the prosecution of routine and high profile drug and alcohol traffic-related offenses in the District of Columbia as well as other crimes. Prior to joining NDAA, Kokesch worked in private practice with a focus on criminal litigation.  He is a cum laude graduate of Thomas M. Cooley Law School and holds a master’s degree in criminal justice from St. Cloud State University. 



Metria Hernandez photo

Kristen K. Shea Senior Attorney

Ms. Shea comes to the NDAA by way of the Tennessee Governor’s Highway Safety Office where she worked as a program manager for the DUI courts and multiple law enforcement grants. Prior to that, she served as a prosecuting attorney for almost 10 years with the majority of her time spent as an Assistant District Attorney in Nashville, Tennessee. She worked as the team leader of the Vehicular Crimes Unit, specializing in traffic-related criminal offenses at the state trial court level. Ms. Shea is a graduate of Trinity University and University of Memphis College of Law.