Research

This page provides an overview of the main research areas, methodological focus, and current/recent projects in my lab. For complete publication, check my Google Scholar / ResearchGate.

Research Areas

  • Multi-level modeling of transportation systems (micro-meso-macro, from human to network to system of systems).
  • Public Transportation & Shared Mobility.
  • Transportation Electrification / Decarbonization (EVs, Charging Stations, and their coupling with other systems).
  • Community-centric mobility solutions and equitable private/public transportation designs and operations.
  • Modeling of Cyber-Physical-Social Systems.
  • Urban computing (data-driven transportation studies).
  • Promoting Sustainable, Resilient, and Equitable Transportation Systems.

Methodological Emphasis

  • Mathematical modeling and optimization (network modeling).
  • Integer programming (e.g. routing problems, see examples)
  • Complex networks (See examples 1 and 2).
  • Data analytics / trajectory data mining.
  • Machine learning for optimization/transportation problems (e.g., GNN for solving traffic assignment, GNN for speeding up BnB and BnP processes).
  • Large-scale high-fidelity simulation development (see examples for multi-modal transportation systems and an simulation env for training RL algorithms).

Current Projects

  1. PI. USDOE: Co-E3T: Energy-Efficient and Equitable Transit through user-centric hardware and software Co-development and community Co-design.
  2. PI. NSF: SAI: Large-scale Planning for Electric Vehicle Public Charging Infrastructure.
  3. Rice PI. USDOT: SMART: Regional Mobility Engine for Central Alabama.
  4. Co-PI. USDOT: ADVANCED DRIVER ASSISTANCE SYSTEMS PILOT PROJECT FOR LARGE TRANSIT BUSES