Traffic Signals Expert Witnesses

Lakewood Ranch, Florida

Traffic Engineering, Safety - Sight distance, traffic signs, traffic congestion, traffic signals, traffic control devices, construction zones, traffic safety, ADA, bicycle, pedestrian, traffic calming, neighborhood traffic management, human factors in traffic safety

• Provided expert opinions, prepared technical reports, deposed and/or testified in 15 traffic/safety cases • Accepting work in most states • 39 years of experience in traffic/transportation engineering and safety • Past Chair of the Institute of Transportation Engineers (ITE) International Traffic Engineering Council (determines standards, practices and handbooks for the industry) • Experience as a City and County Traffic Engineer, including review, design and construction management of pavement, sidewalk, ADA ramps, traffic signal, bike lane, striping and marking, sign, construction zone, neighborhood traffic management, traffic signal timing, and traffic calming projects • Speaker at international, national, regional and local conferences and seminars • Instructor for nine Institute of Transportation Engineers (ITE) webinars and several in-person courses on traffic and safety engineering • Graduate of Leadership ITE / ITE Fellow • Excellent writer in both technical and laymen ter...

Ranchos de Taos , New Mexico

Traffic Engineering, Civil Engineering - Highway Design , Roadway Safety , Roadway Defects, Construction Work Zones, Traffic Control Devices, Traffic Signals, Guardrails, Roadside Hazards, Defective Pavements, Highway Maintenance, Construction Claims, Construction Delays , Construction Defects, Pedestrian Walkways , Property Right of Way, Sight Distance, Roadway Lighting

Max Valerio is a licensed Professional Engineer with over 36 years of experience in Roadway Design and Transportation Engineering. He specializes in Traffic Engineering, Traffic Control Compliance, and Federal Highway Safety Regulations. Max brings extensive experience in highway and construction administration, including Pre-construction development, Technical Specifications, Cost Estimates, Traffic Control Planning, Traffic Engineering, Contract Development and Negotiations, Construction Contract Administration, and Program and Project Management. As a Civil Engineer, Max served as the Chief Engineer for the New Mexico Department of Transportation. As Chief Engineer, he directed the department’s statewide design and engineering program and staff. In this role, Max developed Design Policy & Guidance and produced an annual multi-million-dollar Design and Construction program. Max served as the agency’s representative on Contractor Claims & Disputes, Right of Way Condemnation cases...

Mountlake Terrace, Washington

Traffic Engineering, Transportation - Rapid Rectangular Flashing Beacon (RRFB), pedestrian safety, crosswalk expert, traffic signals, municipal engineering, standard of care, roadway lighting, ADA compliance, beacon failure, signal maintenance, traffic control devices, public agency liability, human factors, sight distance, MUTCD, pedestrian visibility

Jocelyn Mamchur, PE is a civil engineer with over 20 years of experience in municipal infrastructure design and operations. Her professional background includes roadway design, pedestrian facilities, traffic signals, roadway lighting, underground utilities, and ADA compliance within a large public agency environment. Ms. Mamchur specializes in pedestrian safety systems, including Rapid Rectangular Flashing Beacons (RRFBs) and other pedestrian warning devices. Her expertise includes system design, placement, power and detection systems, visibility and conspicuity, inspection protocols, maintenance practices, and operational performance. She routinely evaluates issues involving partial system failures, device outages, sight distance, driver yielding behavior, and agency response to reported malfunctions. She provides standard-of-care analysis for matters involving public agencies and consulting engineers, with a focus on real-world municipal practices, staffing constraints, document...