Safe-D: Safety through Disruption

A Holistic Work Zone Safety Alert System through Automated Video and Smartphone Sensor Data Analysis


This project is inspired by major gaps identified in the literature pertaining to the work zone safety monitoring systems that leverage advanced technologies for tracking workers, identifying hazardous situations, and alerting individuals in danger. The existing systems have two key shortcomings. First, they either target safety hazards external to the work zone (e.g., only vehicular accidents) or workers’ state internally and related to their physical/physiological state (e.g., only human-factor ergonomics or fatigue). Second, previous work fails to address the lack of trust as an adoption barrier of such technologically advanced systems. This project presents a hybrid approach in which visual- and wearable-sensor data are used for safety monitoring and alert generation to offer a practical mitigation strategy to both external and internal safety risks. It leverages smartphones as a pervasive and standalone resource for collecting data and communicating safety-related instructions to workers. The project also uses information systems and behavioral science theories (i.e., technology acceptance model and Diffusion of Innovation theory) to build end-users trust toward scalable adoption of the developed systems.

Project Highlights

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Final Report

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EWD & T2 Products

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Research Investigators (PI*)

Reza Akhavian (SDSU)*
Arash Jahangiri (SDSU)*

Project Information

Start Date: 2020-01-11
End Date: 2022-09-01
Status: Active
Grant Number: 69A3551747115
Total Funding: $150,000
Source Organization: Safe-D National UTC
Project Number: 05-089

Safe-D Theme Areas

Connected Vehicles
Big Data Analytics

Safe-D Application Areas

Infrastructure Technology
Planning for Safety
Risk Assessment

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

San Diego State University
5500 Campanile Dr
San Diego, CA 92182