Research Projects

An Empirical Bayes Approach to Quantifying the Impact of Transportation Network Companies (TNCs) on VMT

November 28, 2018
Project ID: CTEDD 018-02
Author(s): Anurag Pande, California Polytechnic State University
Co-Author(s): Subhrajit Guhathakurta, Georgia Institute of Technology
CTEDD Grant Cycle: 2018 General RFP
Assessing the impacts of new and disruptive technologies on automobile usage and the modal split is emerging as a key issue for transportation planners and policymakers. The proposed research will offer a new approach to quantifying the impact of TNCs (Transportation network companies such as Uber and Lyft) on VMT (Vehicle‐Miles Traveled). The approach is based on a simple idea from counterfactual theory, which is to compare VMT estimates after the TNCs introduction to a region to what the VMT would have been without the TNCs.

Smart Funding Strategies for Maintaining Interdependent Transportation Infrastructure Assets

November 28, 2018
Project ID: CTEDD 018-07
Author(s): Zhaohua Wang, Georgia Institute of Technology
CTEDD Grant Cycle: 2018 General RFP
A road network, consisting of different, but interdependent, transportation infrastructure assets, such as pavements, bridges, signs, etc., supports the mobility, economy, and safety of our society as a whole. According to the 2017 American Society of Civil Engineers infrastructure report card, the U.S. highway system has been underfunded for years. In 2015, 21% of highway pavements are in poor condition, which costs motorists $120.5 billion in extra vehicle repairs and operating costs. Over all, there is a need of $836 billion in repairs and capital investment for America’s highway system.

Integrating Equity into MPO Project Prioritization

November 28, 2018
Project ID: CTEDD 018-03
Author(s): Kristine Williams, University of South Florida
Co-Author(s): Jeffrey Kramer, University of South Florida
CTEDD Grant Cycle: 2018 General RFP
Metropolitan planning organizations (MPOs) have limited funding resources and must consider the potential returns on their investment when prioritizing any project. Among these returns is the degree to which a project provides historically disadvantaged communities with greater access to economic opportunity. This research aims to document effective methods for use by MPOs in project prioritization that emphasize improving access of transportation disadvantaged communities to centers of economic activity.

Strategic Investment Decisions on Highway Improvement Projects

November 28, 2018
Project ID: CTEDD 018-04
Author(s): Mouyid Islam, University of South Florida
Co-Author(s): Chanyoung Lee, University of South Florida & Anurag Pande, Cal Poly San Luis Obispo
CTEDD Grant Cycle: 2018 General RFP
Setting priority in highway improvement projects where safety consideration plays a differentiating role in the decision making process. As such, quantitative safety is now being recognized as an important element in the project selections process at the planning phase. Quantitative evaluation of safety performance of particular roadway facilities, for example, segments and intersections, is critical to understand where the safety concerns need to be addressed on a priority basis. Moreover, it is also important to implement appropriate safety improvements to prioritized set of locations where promise of safety benefits is potentially high.

Supporting Research Dissemination Through the Journal of Public Transportation

November 28, 2018
Project ID: CTEDD 018-09
Author(s): Robert Bertini, University of South Florida
CTEDD Grant Cycle: 2018 General RFP
The Journal of Public Transportation (JPT) is an international peer-reviewed open access journal published by the University of South Florida through the Center for Urban Transportation Research on a quarterly basis. The Journal is now in its 22nd year and has been published solely online since 2014. It is available free via Scholar Commons (, and is indexed in Scopus, the Social Sciences Citation Index, SocINDEX, TOC Premier and Urban Studies Abstracts.