BME, Cornell University, 1965. Master of Business Administration, Cornell University, 1966. Doctor of Philosophy, Cornell University, 1970.
Professor University Illinois, Urbana, 1970—2006. President Ruhl Forensic Inc. (formerly Ruhl and Associates), Champaign, Illinois, 1979—2006.
Commissioner Water and Sewer Commission Freeport, Illinois, 1990. Member American Society of Mechanical Engineers, Society Automotive Engineers, American Society Safety Engineers, Society Manufacturing Engineers.
Married Mary Louise Enstrom, Aug 25, 1965. Children: Roland A. II, Andrew Luther, Laura Louise.