The Traffic Group

The Traffic Group

John Dirndorfer

Director of Traffic Engineering Design

John Dirndorfer has more than 35 years of experience in the field of traffic engineering design. Seven of those years were spent working for public agencies. For five years he worked for the Maryland State Highway Administration’s Signal Design Section. John’s expertise includes the design of traffic signals, telemetry systems, and highway signing, marking, and traffic control plans. He is proficient in both AutoCADD and Microstation drafting packages and  maintains continual training in the application of new MUTCD design criteria.


Associate of Arts, Anne Arundel Community College


  • Institute of Transportation Engineers (ITE)
  • Maryland Association of Engineers (MAE)