Forensic Transportation Engineering
Transportation-engineering analysis for litigation and claims involving roadway design, traffic control, visibility, sight distance, speed environment and road-user movement.
Transportation Safety • Forensic Engineering
Transportation engineering for safety, litigation and complex roadway questions.
Tatum Group combines roadway engineering, crash analysis, human factors, data-driven safety methods and advanced site documentation to address transportation problems across the United States.
Andrew KwasniakExplore Expertise
Andrew Kwasniak, PhD, PE, PTOE, ACTAR • Principal • Transportation Safety Engineer • Forensic Expert
35+states with litigation and non-litigation transportation safety assignments
200+work-zone projects involving temporary traffic control and roadway construction
100+construction and roadway design plans reviewed or developed
Nearly 20years of transportation engineering and safety experience
Core Practice Areas
Engineering analysis grounded in roadway design, safety science and evidence.
Pedestrian, Bicycle & E-Scooter Safety
Analysis of vulnerable-road-user crashes and facilities, including crossings, accessibility, visibility, conspicuity and roadway context.
Work-Zone & Temporary Traffic Control
Experience with more than 200 construction-zone projects involving lane shifts, closures, resurfacing, channelization and temporary traffic control.
Traffic Control Devices & Roadway Design
Evaluation of signs, pavement markings, traffic signals, roadway geometry, intersections, access, sight distance and applicable engineering guidance.
Crash Reconstruction & Human Factors
Reconstruction, simulation, site measurements, imagery, perception-response considerations and 2D/3D visualization as appropriate.
HSM, SPF & Predictive Safety
Highway Safety Manual methods, Safety Performance Functions, network screening and evidence-based prioritization of roadway safety improvements.
Principal
Andrew Kwasniak, PhD, PE, PTOE, ACTAR
Dr. Andrew Kwasniak is a transportation safety engineer and forensic expert whose practice combines litigation consulting with substantial non-litigation roadway safety work.
His work has included pedestrian, bicycle, e-scooter, motorcycle, passenger-vehicle, commercial-vehicle, roadway-departure, intersection, railroad-crossing and work-zone matters.
View Professional ProfileTechnical focus
- Roadway geometry and sight distance
- Signs, signals and pavement markings
- MUTCD and roadway-design guidance
- Crash reconstruction and causation
- Driver perception and response
- ADA pedestrian accessibility
- Roadside safety devices
- Drone-based site documentation
Safety Engineering & Technology
Beyond litigation.
Tatum Group also performs proactive roadway safety analysis using crash data, roadway inventories, Highway Safety Manual methods, Safety Performance Functions, network screening and engineering judgment.
Transportation safety engineering · HSM & SPF analysis · Drone & 3D investigation
Professional Network
Engineering, research and technology connections.
Andrew Kwasniak’s professional work spans transportation safety, forensic engineering, safety analytics, transportation technology and advanced site documentation. Explore related organizations and technical resources.
SPF Tool
Safety Performance Function and Highway Safety Manual technology created by Dr. Andrew Kwasniak and his team.
DecisionLine.ai
Engineering intelligence and data-driven analysis led by Andrew Kwasniak.
Drone Investigation
Drone data collection, 2D/3D scene modeling and forensic visualization.
Professional information & engineering inquiries.
Tatum Group is the professional home of Andrew Kwasniak, PhD, PE, PTOE, ACTAR. For general inquiries:
Tatum Group
428 E. Thunderbird Road, Suite 106, Phoenix, AZ 85022
info@tatumgrp.com