Department of Civil & Environmental Engineering · University of Nebraska-Lincoln

Transportation &
Autonomy
Laboratory for Intelligence

We advance intelligence in transportation systems, specializing in operations analysis and applied artificial intelligence to solve core challenges in autonomy, complex agent behaviors, and real-world integration.

⚙️ Transportation Engineering
🤖 Autonomous Agents
🧠 Artificial Intelligence
🏙️ Urban Mobility
Current Projects

Research

All Projects
Featured · Autonomous Vehicle Design

Domain & Physics-Guided Control for Autonomous Vehicles

Bridging AV control algorithms with traffic flow theory using physics-based response functions, enabling systemwide stability and safety optimization, not just individual vehicle performance.

f₁ f₂ x* a₁ a₂ a₃ min∑fᵢ(x) s.t. x∈X
AI Agents

Consensus-driven AI Agents for Mixed Autonomy Traffic

Modern traffic systems are shaped by dynamic interactions between diverse agents. Agents are expected to uphold safety, maintain quality interactions, and contribute to an efficient system. These goals are often at odds. Navigating this tradeoff between goals is not just a matter of design, but rather a broader challenge of achieving consensus.

Server θ_G aggregate ∇θ_k θ₁ = θ_G + δ₁ local data D₁ θ₂ = θ_G + δ₂ local data D₂ θ₃ = θ_G + δ₃ local data D₃ θ₄ = θ_G+δ₄ data D₄ upload ∇θ_k broadcast θ_G
Knowledge Sharing

Knowledge Sharing and Personalization Across Agents

The curse of variability stands as a critical barrier in the development and deployment of Automated Vehicles (AVs) in the open world. Variability in the open world stems from the innate dynamic, stochastic, and unpredictable nature of the transportation system.

P₁(x) μ₁ P₂(x) μ₂ P₃(x) θ* = argmin ∑ₖ wₖ·L(θ; Dₖ) non-iid · domain shift · distribution mismatch
Heterogeneity

Learning under Agent Heterogeneity

Traffic flow heterogeneity, stemming from diverse behaviors of its agents, presents a fundamental challenge in developing accurate predictive and prescriptive models that are at the heart of understanding traffic.

x t ω = (q₂−q₁)/(ρ₂−ρ₁) congested v_f
Traffic Flow Theory

Modern Traffic Flow Theory

Traffic flow systems are increasingly complex, dynamic, and changing. We develop modern traffic flow theory that accounts for complex interactions and dynamics between agents, and provide theoretical foundations for how they shape traffic performance and stability.

Urban Mobility

Urban Mobility Patterns Under Crisis

The growing frequency and severity of natural disasters present profound challenges for societies worldwide, threatening lives, disrupting economies, and straining infrastructure.

A(t) = 1/(1+e^{−k(t−t₀)}) AV e-bike transit
Adoption Patterns

Adoption Patterns of Emerging Modes of Transportation

The emergence of different modes of transportation promises to transform urban mobility, reshaping not only traffic efficiency and safety but also the environmental and behavioral dynamics of cities worldwide.

Recent Work

Selected Publications

Full List on Google Scholar

For a full list of publications, visit our Google Scholar →

2026
Learning the Pareto space of multi-objective autonomous driving: a modular, data-driven approach
Elayan, M., and Kontar, W.
Arxiv
2025
Mobility behavior evolution during extended emergencies: returners, explorers, and the 15-minute city
Armantalab, O., and Kontar, W.
Arxiv
2025
Consensus-aware AV behavior: trade-offs between safety, interaction, and performance in mixed urban traffic
Elayan, M., and Kontar, W.
Arxiv
2024
Human-automated vehicle interactions: Voluntary driver intervention in car-following
Zhong, X., Zhou, Y., Kamaraj, A.V., Zhou, Z., Kontar, W., Negrut, D., Lee, J.D., Ahn, S.
Transportation Research Part C: Emerging Technologies
2024
Learning Driver Models for Automated Vehicles via Knowledge Sharing and Personalization
Kontar, W., Zhong, X., Ahn, S.
Transportation Research Records  ·  🏆 D. Grant Mickle Award, TRB 2025
2024
Reduced Travel Emissions Through a Carbon Calculator with Accessible Environmental Data: A case study in Madison, Wisconsin
Bulson, E.E., Kontar, W., Ahn, S., Hicks, A.
Nature npj Sustainable Mobility and Transport
2024
A Strategic Approach to Handle Uncertainties in Autonomous Vehicle's Car-following Behavior
Kontar, W., Ahn, S.
Transportation Research Part C: Emerging Technologies
2022
The Internet of Federated Things (IoFT)
Kontar, R., Shi, N., Yue, X., Chung, S., Byon, E., Chowdhury, M., … Kontar, W., et al.
IEEE Access
2022
Transportation emissions during pandemic: duality of impacts
Kontar, W., Ahn, S., Hicks, A.
Environmental Research: Infrastructure and Sustainability
2021
On multi-class automated vehicles: car-following behavior and its implications for traffic dynamics
Kontar, W., Li, T., Srivastava, A., Zhou, Y., Chen, D., Ahn, S.
Transportation Research Part C: Emerging Technologies  ·  Presented at ISTTT24
2021
Autonomous vehicle adoption: use phase environmental implications
Kontar, W., Ahn, S., Hicks, A.
Environmental Research Letters  ·  Top 5% by attention score
On the Road

Talks & Conferences

A record of where we have presented our work and where we will be next; conferences, invited lectures, and workshops.

June
2026
Upcoming Conference
Learning the Pareto Space of Multi-Objective Autonomous Driving: A Modular, Data-Driven Approach
IEEE IV
Detroit, MI, USA
March
2026
Upcoming Invited Talk
Consensus-Seeking Autonomous Agents in Complex Transportation Systems
NSF NAIRR Meeting
Washington, D.C., USA
March
2026
Upcoming Invited Talk
Learning Consensus under Complexity for Driving Agents
University of South Florida
Tampa, FL, USA
Jan
2026
Past Conference
Multi-agent Consensus | Mobility under Crisis | Aerial and Ground Autonomou Mobility in Agriculture
Transportation Research Board Annual Meeting (TRB 2026)
Washington, D.C., USA
Oct
2025
Past Conference
Anomaly Detection in Autonomous Driving Systems
ICCV
Honolulu, HI, USA
People

Our Team

Wissam Kontar
Principal Investigator
Wissam Kontar
Assistant Professor · Department of Civil & Environmental Engineering · University of Nebraska-Lincoln

Wissam holds a Ph.D. in Civil and Environmental Engineering from the University of Wisconsin-Madison (2022), co-advised by Prof. Soyoung Ahn and Prof. Andrea Hicks. He earned his B.Eng. from the American University of Beirut. His research focuses on operational analysis and AI applications for emerging transportation technologies, addressing challenges in automation, connectivity, and the complex behaviors of transportation ecosystems. His ultimate goal is to design and deploy transportation technologies that improve operational performance and align with societal needs.

Mohammad Elayan - PhD Student
Mohammad Elayan
PhD Student
Artificial Intelligence · Autonomous Driving · Transportation Operations
Website →
Omid Armantalab - PhD Student
Omid Armantalab
PhD Student
Urban Mobility · Travel Behavior · Artificial Intelligence
Website →
+
Tu Tran
Undergraduate Researcher
Aerial and Ground Autonomous Systems · Agriculture
Interested?
Get in touch
Updates

News

All News
Funding September 2025
New Award from NSF NAIRR

Consensus-Seeking Autonomous Agents in Complex Cyber-Physical Transportation Systems

Funding December 2025
New Award from DOT Mid-America Transportation Center

Safety and Mobility Risk Index for Region VII Transportation Networks

Award January 2025
Paper wins D. Grant Mickle Award at Transportation Research Board 2025

"Learning Driver Models for Automated Vehicles via Knowledge Sharing and Personalization" recognized at TRB Annual Meeting.

Award January 2025
Paper wins Nathan Gartner Award by ACP50 committee at TRB 2025

"Optimal Measurement of Traffic Hysteresis under Traffic Oscillations" recognized by the ACP50 committee.

New Position January 2025
Joined University of Nebraska-Lincoln as Assistant Professor

Actively recruiting students at all levels — undergraduate, master's, and Ph.D. — to join the TALI research team.

Publication May 2024
Carbon calculator paper published in Nature: Sustainable Mobility and Transport

"Reduced Travel Emissions Through a Carbon Calculator with Accessible Environmental Data" published in Nature npj.

Recognition May 2022
Named a Rising Star in NSF Cyber-Physical Systems

Selected as a Rising Star in NSF Cyber-Physical Systems by the Link Lab at the University of Virginia.

Media May 2021
AV research featured in Popular Science, Gizmodo, and Politico

Work on autonomous vehicle adoption and environmental implications attracted wide media coverage and ranked top 5% by attention score in Environmental Research Letters.

Interested in Joining or Collaborating?

We welcome PhD applicants, postdoc inquiries, and research partnerships.