A state bar association is a professional group that is comprised of attorneys who have passed the bar exam in a certain state. Lawyers who want to practice law in a given state may have to be an official member of the bar association for that state. Each state has its own bar association.
Matthew J. Weiss is a traffic law attorney in New York City. He founded his firm, Weiss & Associates in 1991 and has helped resolve thousands of of traffic law issues. Mr. Weiss frequently writes about New York traffic law on his blog, "Confessions of a Traffic Lawyer".