A Low-Cost Mobile Proximity Warning System in Highway Work Zone

Advances in sensing and equipment control technology and their integrated combinations can assist construction personnel in avoiding accidents, especially hazardous proximity incidents. Proactive alerting systems in hazardous proximity situations can grant the pedestrian workers with additional time and capability to escape the emergency situations. This report discusses the development and testing of a mobile proximity warning system for use in highway work zones. The research team has been supported by the Georgia Department of Transportation (GDOT) in evaluating sensing technologies for active work zone safety. A Bluetooth proximity sensing system was developed with customized software and tested with other commercially available sensing devices at GDOT’s equipment maintenance yards. During the research period, extensive lab tests and field trials under controlled environments were conducted to improve the functionalities of the proximity sensing and alert system. Furthermore, field tests were conducted at an earthmoving construction job site to evaluate the practicality of the system. From the test, the system performance was evaluated in real-world situations, and promising results with positive comments were obtained from the workers who participated in the test. The overall primary findings throughout the research period are summarized as follows: Based on the test results and feedback from workers, the Bluetooth proximity alert system can provide reliable alerts during hazardous proximity situations; the experimental results in controlled environments demonstrate that the Bluetooth proximity sensing and alert system provides reliable results with an appropriate alarm with slight performance differences when equipment approaches a worker at various speeds; the adaptive signal processing algorithm developed in this research was able to significantly reduce the signal processing delay and inconsistency of the Bluetooth system in high approaching speeds based on field trial results; and the field test results show that frequencies of hazardous proximity situations highly depend on the type of equipment and type of work to be performed nearby.

  • Supplemental Notes:
    • This IDEA project was conducted by Georgia Institute of Technology.
  • Authors:
    • Cho, Yong K
  • Publication Date: 2017-10


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Figures; Photos; Tables;
  • Pagination: 24p
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 01659449
  • Record Type: Publication
  • Report/Paper Numbers: NCHRP IDEA Project 187
  • Files: TRIS, TRB, ATRI
  • Created Date: Feb 6 2018 1:24PM