Research Projects

Development of a Real-time Roadway Debris Hazard Spotting Tool Using Connected Vehicle Data to Enhance Roadway Safety and System Efficiency

November 28, 2018
Project ID: CTEDD 018-06
Author(s): Sisinnio Concas, University of South Florida
Co-Author(s): Mohsen Kamrani, University of South Florida
CTEDD Grant Cycle: 2018 General RFP
Roadway debris and other unexpected obstructions, such as surface damage, or lane hydroplaning due to weather conditions like snow or precipitation, can lead to significant traffic delays or worse, crashes. The presence of roadway debris is particularly concerning in high-traffic and high-speed roadways where dense traffic conditions reduce visibility and large volumes of vehicles are exposed to risk. Although prevention of the various causes of obstructions and defensive driving can reduce these consequences, the problem cannot be eliminated entirely.

Creative Utilization of Urban Roadway Facilities with Predictive Safety Assessment Tool – Phase 1

April 16, 2018
Project ID: CTEDD 018-03 SG
Author(s): Mouyid Islam, University of South Florida
Co-Author(s): Cong Chen, University of South Florida
CTEDD Grant Cycle: 2018 SEED Grant
The impact of predictive safety assessment based on quantitative methodology of the Highway Safety Manual (HSM) is significant particularly in urban roadway facilities. The responsibilities of safety professionals, transportation planners, and decision makers are critical for safe and efficient transportation in the ever-increasing travel demand in urban areas. The purpose of this study was to develop a quantitative safety assessment tool of converting one urban roadway facility type to another with the application of predictive methodology and principles in the HSM.

Assessing Viability of Carsharing for Low-Income Communities

April 16, 2018
Project ID: CTEDD 018-04 SG
Author(s): Kate (Kyung) Hyun, University of Texas at Arlington
Co-Author(s): Courtney Cronley, University of Texas at Arlington
CTEDD Grant Cycle: 2018 SEED Grant
With the increasing benefits of car-share programs, it is important to understand how individuals characterize each service as well as their familiarity with the availability of programs in their locations. This information could be used to target services more effectively to those who already show evidence of adopting this form of transit, as well as more effectively reaching groups whom we would expect to benefit such as individuals who lack economic resources to own their own cars, but who need on-demand, door-to-door transportation.

Trip and Parking Generation at Transit-Oriented Developments: Two Case Studies in Texas

April 16, 2018
Project ID: CTEDD 018-06 SG
Author(s): Roya Etminani, University of Texas at Arlington
Co-Author(s): Shima Hamidi, University of Texas at Arlington
CTEDD Grant Cycle: 2018 SEED Grant
The decision on how best to allocate land around transit stations is a debated topic, with transit officials often opting for park-and-ride lots over active uses such as multifamily housing, office, and retail organized into transit-oriented developments (TODs). Providing large park-and-ride lots has been the default strategy to maximize transit ridership in the short-run. But is it the best strategy in the long run? The debate continues when the land is developed, with officials usually assuming that TODs require the same number of parking spaces as conventional development and that transit stations require the same number of park-and-ride spaces as non-TOD stations, even if much of the travel demand is captured internally and much of the transit demand is generated by TODs themselves.

Assessment of Extreme Weather Events Under Changing Climate on Transit Desert Communities

April 16, 2018
Project ID: CTEDD 018-02 SG
Author(s): Diane Jones Allen, University of Texas at Arlington
Co-Author(s): Arne Winguth, University of Texas at Arlington
CTEDD Grant Cycle: 2018 SEED Grant
Extreme weather events like Hurricane Katrina or Hurricane Harvey had severe impacts on local communities and their transportation infrastructure. In many cases evacuation out of flooded areas was difficult because of a lack of adequate transportation infrastructure. In this study, a vulnerability assessment will be made by combining storm surge and extreme rainfall projections with the Transit Deserts method that assesses geographic vulnerability, in regards to access to employment and other services that impact quality of life, and transit equity and access.