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Human performance and injury

Human factors

Human factors is the study of how people interact with their environment — how a driver responds to what appears ahead, how a pedestrian reads a walkway, whether a warning does the work it was supposed to do.

Our engineers have published on driver response to slow and stopped lead vehicles, eye glance behavior, timed-exposure nighttime recognition, and closing-speed judgment from taillight spacing. We apply that literature and the naturalistic driving datasets behind it to a wide range of complex real-world incidents.

Scope

What this covers

Driver behavior

  • Perception-response time
  • Typical driver behavior
  • Driver eye glance behavior
  • Response to stopped or slow-moving vehicles
  • Distracted driving
  • Interaction with autonomous and driver-assist systems

Pedestrians and warnings

  • Where pedestrians typically look
  • Stairway and walking-surface negotiation
  • Pedestrian response
  • Warning signs, product warnings, and signage conspicuity

Peer-reviewed research

Published work behind this practice area

Authored by our engineers and peer-reviewed by external experts.

All publications

Who does this work

Engineers on this practice area

Justin Ngo

PE, ACTAR

Accident reconstruction, human factors, and vehicle testing

  • Heavy truck and passenger vehicle reconstruction
  • Human factors: perception, attention, and response
  • Premise slip, trip, and fall analysis
  • Vehicle testing, instrumentation, and data analysis

4 publications

Louis R. Peck

PE, ACTAR

Motorcycle reconstruction, photogrammetry, and testing

  • Motorcycle reconstruction
  • Photogrammetry
  • Testing

12 publications

Jeffrey Suway

PE, ACTAR

Visibility and conspicuity, human factors, and accident reconstruction

  • Night visibility and conspicuity
  • Lighting issues
  • Human factors
  • Accident reconstruction

27 publications

Request a case review

Send us the incident location, the date, and what is in dispute. We'll discuss what analysis is possible with the evidence that exists, and what it would take to get.