Grant Johnson

Grant Johnson, TE is a traffic engineering expert specializing in litigation involving traffic safety and roadway conditions. With a career encompassing leadership roles in both domestic and international traffic engineering projects, he brings a global perspective to his litigation work. His work centers on investigating roadway and traffic conditions, assessing compliance with traffic control standards, and evaluating whether design and safety principles have been adhered to.

Mr. Johnson has been retained in numerous expert witness and consulting engagements across several western US states, including California, Hawaii, Utah, Arizona, and Washington, involving cases such as nighttime trucking accidents, car/motorcycle collisions, and pedestrian fatalities. His BS in Civil Engineering from California State University, Sacramento, along with his registration as a Traffic Engineer in California (TR#1453), reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving traffic engineering and roadway safety.