Scott Kelley Expert Witness

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Specialties & Experience of this Expert Witness

General Specialties:

Traffic Engineering and Transportation

Keywords/Search Terms:

Traffic Safety, Pedestrian Safety, Bicyclist Safety, Traffic Crash Litigation, Transportation Engineering, Transportation Planning, Traffic Engineering, Bicycle & Pedestrian Planning, Roadways, Highways, Drainage, Tort Liability, Roadside Safety


B.S. Civil Engineering (BSE), Arizona State University, Tempe, AZ

Years in Practice:


Additional Information

Scott Kelley is a licensed professional engineer (PE), Civil, and certified professional traffic operations engineer (PTOE). He has 21 years of traffic engineering experience in all facets of the practice including planning, design, operations, maintenance, consulting, and training. Scott’s experience includes Design Concept Reports (DCRs), traffic impact studies, strategic transportation safety plans (STSPs), road safety audits (RSAs), traffic safety studies, all-way stop-control warrant and traffic signal warrant studies, ADA compliance studies, intersection alternatives analysis, traffic signal timing and progression analysis, traffic simulation and visualization modeling, life-cycle cost analysis, benefit-cost analysis, intersection horizontal geometrics, bike and pedestrian design; traffic control, signing, pavement marking, traffic signal, and lighting design. In addition, Scott has led several large-scale asset management projects that have moved agencies into compliance with federal requirements for various traffic control and pedestrian facilities including signing retroreflectivity, pavement marking retroreflectivity, and pedestrian signal indications. Scott participated in development of Arizona DOT Strategic Highway Safety Plan, multiple MPO and COG Regional Strategic Transportation Safety Plans (STSPs), and the ADOT Roadway Departure and Intersection Safety Implementation Plan. He also led the development of many before/after Safety Effectiveness Evaluations to determine the efficacy of roadway and intersection safety countermeasures. Scott has provided litigation expert witness services for cases in Arizona, California, Nevada, New Mexico, and Texas. Professional Engineer (PE): Arizona (#48269), California (#73357), Colorado (#49774), Florida (#97440), Nevada (#28679), New Mexico (#26755), North Carolina (#49651), Texas (#148940), Utah (#13493787-2202), West Virginia (#24423) Professional Traffic Operations Engineer (PTOE) #3230