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Human Factors Guidelines for Road Systems - Collection C: Chapters 16, 17, 18, 19, 20, 22 (Tutorials 4, 5, 6), 23 (Updated), 24, 25, 26 (Updated) (2010) / Chapter Skim
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Passing Lanes
Pages 2-3

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From page 2...
... This improved operation has direct implications for driver behavior because a driver stuck behind a slow-moving vehicle may be more likely to experience time delays and frustration, which could lead drivers to increase speeds to unsafe levels to pass a slow-moving vehicle. Design Guidelines RECOMMENDED VALUES OF LENGTH AND SPACING BY AVERAGE DAILY TRAFFIC (ADT)
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From page 3...
... The sign "Right Lane End" is recommended to be located at a distance that will provide adequate notice that the passing lane is terminating. Design Issues Length: The effective length of the passing lane is defined as the physical length of the passing lane plus the distance downstream to the point where traffic conditions return to a level similar to that immediately upstream of the passing lane (5)
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Key Terms

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  • rolling terrain
  • physical length

  • effective passing
  • downstream passing
  • provide passing
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  • upcoming passing
  • alternating passing
  • frequent passing
  • thought passing
  • reduce driver

  • lane ahead
  • highway sections
  • overall traffic
  • climbing lanes
  • traffic operations

  • highway reduces
  • drivers view
  • traffic composition
  • lane markings
  • warn drivers

  • engineers typically
  • lane signage
  • drivers agree
  • traffic conditions
  • time drivers


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