In the previous Safe-D project 04-104, a prototype wearable Personal Protective Equipment vest was developed and demonstrated that accurately localizes, monitors, and predicts potential collisions between work zone workers and passing motorists. The system also notifies the worker of when they’re about to depart safe geo-fenced safe areas within work zones. While the design supported a successful functional demonstration, additional design iteration is required to simplify, ruggedize, and reduce per unit costs to increase the likelihood of broader adoption. In addition, two new useful components were identified that would support a more effective deployment package. A base-station will be added that provides an edge computing environment for alert algorithm processing, consolidates communications of individual worker positions via a 4G link to a cloud computing environment, and can be coupled with a local RSU to support the broadcast of work zone information to connected vehicles. In a addition, a smart cone device will be added that can help automatically define safe area boundaries and improve communications reliability between workers and the base station. The entire package is being developed to support a broader scale deployment of the technology with the Virginia Department of Transportation.
The Smart Work Zone system includes Smart Vests, Smart Cones, and Base Station Devices. The system also interfaces with the Work Zone Builder tablet application to provide a complete system for managing work zone safety while providing data for informing Connected and Automated Vehicles (CAVs) about work zone deployments.
The Smart Work Zone system is a dynamic wireless system that provides alerts to work zone workers and passing motorists including connected and automated vehicles (CAVs) when a potential collision is imminent or when the worker is about to cross a safe area geofence boundary. The system uses four components: Smart Vest, Smart Cone, C-V2X Base Station, and Work Zone Builder Application.
Alert worker to potential hazards
Communicate Real-Time Work Zone status
Design Work Zone Layouts
Provide data to Work zone data exchanges
ATSSA Innovation Award 2nd place
Virginia Tech Link + License + Launch Tech Highlight
C-V2X Work Zone demonstration using Smart Vest and C-V2X base Station. Participated on ITSA “Best of ITS Awards”
Safely Operating ADS Research project integrates Smart Work Zone technology
EWD & T2 Products
Student Impact Statement – Daniel Burdisso (pdf): The student(s) working on this project provided an impact statement describing what the project allowed them to learn/do/practice and how it benefited their education.
Project Information Sheet can be found here
Video for ATSSA’s 52nd Annual Convention & Traffic Expo – Innovation Awards below.
The following PDF provides a technology highlight of the Smart Work Zone System.
Provisional Patent filed with VTIP and US Patent on 01/2022
The Smart Work Zone technology has been incorporated into two research projects at VTTI:
Work Zone deployment on Wise County found here:https://vtx.vt.edu/articles/2022/05/vtt-smart-work-zone.html
Mollenhauer, M. (2021). Smart Vest, WZB, and C-V2X Presentation. AV Summit Series #3 – Work Zones, Pittsburg, PA, United States. https://paavsummit.org/archives/2021-summit-series/summit-series-webinar-3/.
Mollenhauer, M. (2021). Smart Vest and Base Station Presentation. Army Demo.
Mollenhauer, M. (2021). Smart Vest, Base Station, WZB, and Smart Intersection Presentation. Falls Church Smart City Demo, Blacksburg, VA, United States.
Mollenhauer, M., Talledo Vilela, J.P. (2021). Smart Work Zone System Presentation. ITS America Conference, Charlotte, NC, United States.
Mollenhauer, M., Talledo Vilela, J.P. (2022). Smart Work Zone System Demonstration. VDOT, Wise County, VA, United States.
Mollenhauer, M., Talledo Vilela, J.P. (2022). Smart Work Zone System Demonstration. VDOT, Vienna, VA, United States.
Research Investigators (PI*)
Start Date: 2021-03-01
End Date: 2022-08-30
Grant Number: 69A3551747115
Total Funding: $287,472
Source Organization: Safe-D National UTC
Project Number: VTTI-00-036
Safe-D Theme Areas
Safe-D Application Areas
Planning For Safety
Operations and Design
Office of the Assistant Secretary for Research and Technology
University Transportation Centers Program
Department of Transportation
Washington, DC 20590 United States
Virginia Polytechnic Institute and State University
Virginia Tech Transportation Institute
3500 Transportation Research Plaza
Blacksburg, Virginia 24061