Kristine Williams

Manatee County, FL Community Sustainability Partnership Program, Fall 2019

During the University of South Florida (USF) Fall 2019 semester, the Manatee County Transportation Planning office requested that the graduate students of URP 6711 Multimodal Transportation Planning determine multimodal improvements along three high priority county corridors. Two main components of the Manatee County Long Range Transportation Plan are an emphasis on advancing complete streets and…

Motorcycles and Horizontal Curves – A Literature Review

Motorcycles and Horizontal Curves – A Literature Review Zhenyu Wang, Changyoung Lee, Pei-Sung Lin, Rui Guo, Chunfu Xin, Rama Durga Tammayya Naidu Kolla, Runan Yang, Abhijit Vasili Accident Reconstruction Journal, Volume 29 Issue 5, September 2019   Motorcycle ownership and use is increasing nationwide, leading also to an increase in motorcycle-related crashes, injuries and fatalities.…

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

Creative Utilization of Urban Roadway Facilities with Predictive Safety Assessment Tool – Phase 1  For better and safer roadways with widening or dividing the roadway with a median barrier, one needs to know if the number of crashes will increase and decrease in future and how many are actual increase or decrease. Everyone wants to…

Understanding Ridership Trends in Transit

Florida has seen dramatic ridership declines in the past four years. These declines are over two times more severe than those for the nation and have continued thru 2018. The declines are pervasive with the most severe declines in southeastern Florida locations, which are the most conducive to transit. The changes in ridership on public…

The Latest Data from the Tampa Connected Vehicle Pilot Program on ITS DataHub

TAMPA, Fla., March 5, 2019 – The Autonomous-Connected Mobility Evaluation (ACME) program at the Center for Urban Transportation Research has played a pivotal role in providing the latest data from the Tampa Connected Vehicle (CV) Pilot project to the Intelligent Transportation Systems (ITS) Data Hub, which provides open data from the three connected vehicle technology…

Development of crash modification factors of horizontal curve design features for single-motorcycle crashes on rural two-lane highways: A matched case-control study

Development of crash modification factors of horizontal curve design features for single-motorcycle crashes on rural two-lane highways: A matched case-control study Chun fu Xin, Zhenyu Wang, Chanyoung Lee, Pei-Sung Lin, Tao Chen, Rui Guo, Qing Lu Accident Analysis & Prevention, Volume 123, pp 51-59, February 2019. Single-motorcycle crashes are overrepresented on horizontally curved segments of…

Probability of Pedestrian Deaths and the Role of Socioeconomic Factors – A Disaggregated Approach

Purpose: The objective was to investigate the significance of socioeconomic factors, roadway characteristics, and other factors in explaining the probability of pedestrians dying once involved in vehicle crashes. Methods: Using individual pedestrian crashes and related characteristics in urbanized areas of Florida during 2011-2015 as well as Census tract-level data on socioeconomic factors from the American…

Improving Transportation Access to Health Care Services

Improving Transportation Access to Health Care Services Principal Investigator: Kristine Williams Summary: Millions of people across the U.S. are unable to provide their own transportation due to age, disability or income constraints. Although the size of this transportation disadvantaged (TD) population is not fully known, the U.S. Government Accountability Office (GAO) states that the population…

Safety effects of street lighting on roadway segments: Development of a crash modification function

Safety effects of street lighting on roadway segments: Development of a crash modification function Runan Yang, Zhenyu Wang, Pei-Sung Lin, Xiaopeng Li, Yu Chen, Ping P. Hsu & Alex Henry, Traffic Injury Prevention, Page: 296-302,Volume 20 Issue 3, April 11, 2019. Abstract Objective: Nighttime crashes are overrepresented on the U.S. highway system. Roadway lighting, which provides additional…