Safe-D: Safety through Disruption

Data Fusion for Non-Motorized Safety Analysis



Data-driven approaches play a critical role in developing safety improvement investment decisions. However, for non-motorized travel, exposure to risk has often been the missing piece of the puzzle. Safety analysts have been struggling with the lack of availability of exposure data, making it difficult to discern a trend in crash rates and identify high-risk locations for pedestrians and bicyclists. While short-term counts cannot be considered policy relevant (until they are scaled to a long-term representative value), continuous monitoring of non-motorized traffic using automatic sensors are often not cost effective. Moreover, every sensor has some limitations in terms of coverage, accuracy, and reliability. In the era of big data, GPS data, cell phone tracking apps, fitness tracking devices or bike sharing systems hold great potential to observe travel activity but they include a range of biases related to representation. Recognizing these limitations and benefiting from the advancements in technologies, this project aims to develop effective methodologies to fuse together different data sources to develop accurate and reliable exposure estimates for safety analysis. The proposed framework will bring together traditional and emerging data sources, and will be developed in such a way that it can be up- or down-scaled based on the available data sources of a study area. The exposure estimation output will then be used for crash assessment tailored to the needs of the study area. The proposed approach will increase the quality and representativeness of data and help safety analysts to effectively derive benefits from potential sources in their decision making.

Project Highlights

Coming Soon!

Final Report

Coming Soon!

EWD & T2 Products

Internship Report (pdf): A 5-week summer internship program was designed and implemented as part of this project’s EWD and T2 plan. This report describes the internship of Atom Arce, a recent high school graduate (High School for Math, Science and Engineering at CCNY – Class of 2018) and newly admitted first-year undergraduate student (Fall 2018) at the University of Toronto.


Lee, K., & Sener, I. N. (2020). Emerging data for pedestrian and bicycle monitoring: Sources and applications. Transportation Research Interdisciplinary Perspectives, 100095.

Research Investigators (PI*)

Ipek N. Sener (TTI/TAMU)*
Silvy Munira (TTI/TAMU)
Yunlong Zhang (TAMU)
Shawn Turner (TTI-TAMU)
Kapil Arya (TTI/TAMU)

Project Information

Start Date: 06/01/2018
End Date: 06/30/2021
Status: Active
Grant Number: 69A3551747115
Total Funding: $478,437
Source Organization: Safe-D National UTC
Project Number: 03-049

Safe-D Theme Areas

Big Data Analytics

Safe-D Application Areas

Planning for Safety
Vulnerable Users

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