Senior Principal Engineer
John has been involved in a wide variety of projects related to traffic safety, transportation planning, functional design, traffic operations, and applied research for over 41 years. He has conducted independent research, taught transportation-related topics in professional seminars, and authored papers to advance the state of knowledge in transportation. John was the principal investigator for a major update of the year 2010 Highway Capacity Manual. Throughout his professional career, he has participated in public hearings, city and county commission workshops, and special board hearings.