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Head, Belt, Boots: Obtaining Consistent Probability of Detection in Human Visual Search

Field measurements examined spacing based on seeing neighbouring searchers’ heads, belts or boots. Calculated POD suggested useful consistency across the woodland locations and seasons studied.

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  • Link: Original article

  • Publisher(s): Journal of Search and Rescue, the issuing journal

  • Publication date: Issue dated June 2025; article webpage dated 1 July 2025.

Operational relevance: Offers a repeatable visual reference for spacing rather than an undefined instruction to remain within sight.

Transferability and limitations: Relevant to woodland line searching after local evaluation. Two locations, mannequin targets and calculated POD underpin the findings. Actual team performance and spacing consistency require further validation. journalofsar.com

Training influence: Compare the three spacing approaches using hidden targets; record gaps, missed targets and terrain changes before adopting numerical POD assumptions.

Training sections: ground-search tactics; visual search; spacing and coverage; POD; team leadership.

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