Safe-D: Safety through Disruption

Use of Disruptive Technologies to Support Safety Analysis and Meet New Federal Requirements



The goal of this project is to examine whether traffic volume estimates developed from disruptive technologies such as cell phones, GPS/Bluetooth devices, and alternative data sources (e.g., demographic, socioeconomic, land use data) can be used confidently and accurately to support data-driven safety analysis (i.e., network screening) to meet the 2016 Highway Safety Improvement Program (HSIP) Final Rule requirements. The main research questions include: What is the expected accuracy of AADT estimates developed from disruptive technologies? How does the AADT accuracy vary by roadway functional class for urban and rural roads? What is the average penetration rate of disruptive data sources? What is the impact of underestimating or overestimating AADT on data-driven safety analysis? This research involves conducting a review of the literature; gathering and integrating several datasets from Texas and Virginia such as crash, roadway, and traffic data, including Annual Average Daily Traffic (AADT) estimates developed from disruptive data sources; performing statistical analysis and validating AADT estimates from disruptive technologies, and conducting an impact analysis to determine how AADT estimation errors can affect the results of safety analysis.

Project Highlights

  • Coming Soon

Final Report

04-113 Final Report

EWD & T2 Products

Coming Soon


Coming Soon

Research Investigators (PI*)

Ioannis Tsapakis (TTI/TAMU)*
Subashish Das (TTI/TAMU)
Eric Li (VTTI)
Dominique Lord (TAMU)
Alfredo Sanchez (TTI)
Lorenzo Cornezo (TTI)

Project Information

Start Date: 2019-08-01
End Date: 2021-02-28
Status: Active
Grant Number: 69A3551747115
Total Funding: $1,607,000
Source Organization: Safe-D National UTC
Project Number: 04-113

Safe-D Theme Areas

Big Data Analytics

Safe-D Application Areas

Planning for Safety
Freight and Heavy Vehicles
Performance Measures

More Information

UTC Project Information Form

Sponsor Organization

Office of the Assistant Secretary for Research and Technology
University Transportation Centers Program
Department of Transportation
Washington, DC 20590 United States

Performing Organization

Texas A&M University
Texas A&M Transportation Institute
3135 TAMU
College Station, Texas 77843-3135

Virginia Polytechnic Institute and State University
Virginia Tech Transportation Institute
3500 Transportation Research Plaza
Blacksburg, Virginia 24061