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Center for Data Reduction and Analysis Support

Data servers

The Center for Data Reduction and Analysis Support (CDRAS) supports standardized access to and analysis of numerous naturalistic driving study data sets (currently 2.5 PB) housed at VTTI for researchers within and outside of the institute. Services include coding of video and audio data, data quality assurance, data standardization, data mining, event selection, and data analysis. The center actively supports data analysis collaborations with external institutions.

Miguel Perez, Center Director

Miguel Perez
Group Leader

Featured Projects

SHRP2 NDS Data Dissemination and User Technical Support

Projects are focused on the accessibility and application assistance of general use data files and interfaces to support data users, including those that are not SHRP 2 contractors. As part of this effort, reduced or de-identified files such as trip files, event files, and other reduced or aggregated files are developed to provide easier access to the SHRP 2 naturalistic driving study data. Completed projects have included the production and distribution of early results from the NDS data, data documentation, webinars, workshops, and other training and communication activities. Read More

Shanghai NDS Study

VTTI and its research partners are transitioning lessons learned from conducting naturalistic driving research to China. Tongji University of Shanghai, General Motors, and VTTI are collaborating to study driving in Shanghai, the most populated city in China, with over 20 million people and two million cars. The project is the first study outside of the U.S. to use the NextGen data acquisition system developed by VTTI to collect vehicle, traffic, and driver behavior data. Read More

Support for FHWA Safety Training and Analysis Center

The SHRP2 data represent an extensive collection of detailed information describing drivers, vehicles, trips, and roadways. The driver, vehicle, and trip information is referred to as NDS data, while the roadway data are referred to as Roadway Information Database (RID) data. Read More

Generation of de-identified SHRP2 trip traces

The objective of this project is to describe the nature of a trip (trip-purpose, in modeling terms) without revealing personally identifying information. A method to retrieve generic location categories from Google Maps has been developed and is being applied on the Raleigh, North Carolina portion of the SHRP2 NDS data set. Buffers around coordinate pairs are being tested. Read More

Groups

Data Reduction Group

The Data Reduction Group serves many different research groups, both within and outside of VTTI, whose research requires video and/or audio analysis in the areas of driver performance and behavior metrics, situational analyses, and environmental characteristics. The group’s goal is to provide efficient, accurate, and comprehensive coding of videos to meet the specific needs of each unique research project. Our work begins by conducting the necessary groundwork to prepare a video dataset for analysis and working alongside the researcher to develop a data reduction protocol. We then train and manage the required data reduction staff, conduct extensive quality control throughout the reduction phase, and prepare final sets of coded data. In addition to the group leader, the group currently encompasses an analyst, a team of coordinators, a trainer, and support staff as well as a large staff of data reductionists housed within three data reduction labs with nearly 50 combined workstations. The labs currently operate six days a week, 60 hours per week.

Julie McClafferty, Group Leader

Julie McClafferty
Group Leader


Data Analysis Support

The Data Analysis Support Group facilities analysis of naturalistic driving data by providing timely and efficient access to the datasets hosted at VTTI. The group is composed of experts in data preparation, standardization, mining, and analysis. Analysis support services are provided to any organization interested in utilizing large-scale driving datasets.

Jeremy Sudweeks, Group Leader

Jeremy Sudweeks
Group Leader

Center Faculty

Whitney Atkins

Data Analysis Support

Senior Research Specialist

Luis Avendano

Data Reduction

Data Reduction Coordinator

Ben Boucher

Data Reduction

Data Reduction Coorindator

Julie Cook

Data Analysis Support

Research Associate

Kenny Custer

Data Analysis Support

Maryam Davoodi

Data Analysis Support

Research Associate

Rufina Dominic Savio

Data Analysis Support

Project Associate

Charles Layman

Data Analysis Support

Senior Project Associate

Shannon Lipscomb

Data Reduction

Data Reduction Coordinator

Julie McClafferty

Data Reduction

Project Director

Devon Moeller

Data Analysis Support

Project Associate

Miguel Perez

Data Analysis Support

Director, Center for Data Reduction and Analysis Support

Sarah Robinson

Data Reduction

Data Reduction Coordinator

Edie Sears

Data Analysis Support

Senior Project Associate

Jeremy Sudweeks

Data Analysis Support

Group Leader

Brunilda Swannell

Data Reduction

Data Integrity Coordinator

Stuart Walker

Data Reduction

Project Associate

Ethel Wiersma

Data Reduction

Data Reduction Training Specialist

Tina Witcher

Data Analysis Support

Senior Project Associate

More Information

Contact

  • 540-231-1500
  • 540-231-1555

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