We study how cyber incidents and physical disruptions affect transportation services, and how agencies and road users respond. Our research covers public transit operations, safety at connected intersections, and regional connections within the transportation cybersecurity industry.
We examine how public transit agencies prepare for cyber incidents, maintain essential services, and restore operations. This work considers staff capacity, cybersecurity practices, and dependencies between operational and information systems to identify gaps in preparedness and recovery planning.
We study how compromised information, such as suppressed safety warnings, changes interactions between drivers and pedestrians at connected intersections. Behavioral analysis and traffic safety models help us identify conditions in which these disruptions increase risk.
We analyze business visitor flows to understand connections among cybersecurity, automotive, transportation, and logistics industries across regions. Related research uses crowdsourced mobility data to examine how adverse weather disrupts transportation networks and how traffic recovers.
Our modeling framework combines graph convolutional networks and transformers to represent spatial relationships and temporal patterns in business visitor flows.
2025–2027
PI · Transit Cooperative Research Program
Developing a national assessment and response toolkit to strengthen cyber risk management, incident response, and operational resilience across public transit agencies.
2024–2025
PI · USDOT Tier-1 UTC CYBER-CARE
Examining cybersecurity preparedness, organizational practices, risk responses, and policy needs across public transportation agencies nationwide.
2024–2025
Institutional PI · USDOT Tier-1 UTC CYBER-CARE
Investigating how cyberattacks alter vehicle–pedestrian interactions and identifying vulnerable operating conditions in connected transportation environments.
2024–2025
PI · USDOT Tier-1 UTC CYBER-CARE
Modeling spatial and economic dynamics across cybersecurity, automotive, transportation, and logistics industries to understand regional clustering, interdependencies, and system resilience.
Cyber-Physical Safety
How are pedestrian safety compromised under suppressed warning cyberattacks at a connected intersection? – Exploring vehicle-pedestrian interactions using a hidden Markov model-based approach.
Accident Analysis & Prevention, 235, 108637.
Transportation Cybersecurity Ecosystems
Analyzing the Spatiotemporal Dynamics and Social Influences on the Transportation Cybersecurity Industry Through a Business Visitor Flow Perspective.
2025 IEEE Security and Privacy Workshops, 307–313.
Transportation System Resilience
Multi-crowdsourced data fusion for modeling link-level traffic resilience to adverse weather events.
International Journal of Disaster Risk Reduction, 112, 104754.
We are extending this work to help transportation agencies prioritize preparedness, response, and recovery measures. A central question is how staff decisions and organizational practices shape service outcomes when cyber and physical disruptions occur together.
May 2026
July 2025
UH Cullen College of Engineering