Quantitative Analysis of Close Call Events

  • Olga Golovina
  • Manuel Perschewski
  • Jochen TeizerEmail author
  • Markus König
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10863)


Construction safety is a big problem according to official statistics. In many of the developed countries about 15–25% of all fatal construction workplace accidents relate to too close proximity of pedestrian workers to construction equipment or hazardous materials. Extracting knowledge from data to near hits (aka. close calls) might warrant better understanding on the root causes that lead to such incidents and eliminate them. While a close call is a subtle event where workers are in close proximity to a hazard, its frequency depends – amongst other factors – on poor site layout, a worker’s willingness to take risks, limited safety education, and pure coincidence. Some pioneering organizations have recognized the potential on gathering and analyzing leading indicator data on close calls. However, mostly manual approaches are infrequently performed, subjective due to situational assessment, imprecise in level of detail, and importantly, reactive or inconsistent in effective or timely follow-ups by management. While existing predictive analytics research targets change at strategic levels in the hierarchy of organizations, personalized feedback to strengthen an individual worker’s hazard recognition and avoidance skill set is yet missing. This study tackles the bottom of Heinrich’s safety pyramid by providing an in-depth quantitative analysis of close calls. Modern positioning technology records the trajectory data of personnel, equipment, and materials. Computational algorithms then automatically generate previously unavailable details to close call events. The derived information is embedded in simplified geometric information models that users on a construction site can retrieve, easily understand, and adapt in existing preventative hazard recognition and control processes. Results from scientific and field experiments demonstrate that the developed system works successfully under the constraints of currently available positioning technology.


Construction safety Close calls Predictive analytics 


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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Olga Golovina
    • 1
  • Manuel Perschewski
    • 1
  • Jochen Teizer
    • 1
    Email author
  • Markus König
    • 1
  1. 1.Ruhr-University BochumBochumGermany

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