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Driver responses to differing urban work zone configurations.

J F Morgan1, A R Duley, P A Hancock

  • 1University of Central Florida, Department of Psychology, Orlando, FL 32816-1390, USA. jfmorgan@vt.edu

Accident; Analysis and Prevention
|April 13, 2010
PubMed
Summary
This summary is machine-generated.

Reduced taper length in highway work zones increases driver proximity to hazards, especially without a lead vehicle. This simulation study highlights safety risks associated with shorter work zone tapers.

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Area of Science:

  • Traffic Engineering
  • Human Factors in Transportation
  • Road Safety Research

Background:

  • Urban highway work zones are critical infrastructure zones requiring careful traffic management.
  • Existing work zone designs are continuously evaluated for safety and efficiency.
  • Driver behavior in work zones is influenced by configuration and traffic conditions.

Purpose of the Study:

  • To assess driver responses to two urban highway work zone configurations: existing design vs. reduced taper length prototype.
  • To evaluate the impact of a lead vehicle (bus) on driver behavior in these work zones.
  • To identify safety implications of reduced taper length designs.

Main Methods:

  • Simulator-based assessment involving 21 drivers.
  • Navigation through two work zone configurations (existing vs. reduced taper length).
  • Two conditions: with and without a lead vehicle (bus).
  • Measurement of driver speed, braking, travel path, and collision frequency.

Main Results:

  • Drivers navigated significantly closer to the work area boundary in the reduced taper length design.
  • Lead vehicle presence significantly interacted with taper length, affecting driver speed and collision frequency.
  • Reduced taper length increased proximity risk, particularly when driver anticipation was limited.

Conclusions:

  • Reduced taper length in highway work zones increases risks for drivers and personnel due to diminished anticipation.
  • The presence of a lead vehicle can mitigate some risks associated with reduced taper length.
  • Simulation provides a valuable tool for assessing and predicting driver behavior in varied work zone designs.