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Capacity and Level of Service at Unsignalized Intersections Final Report Volume 2 - All-Way-Stop-Controlled Intersections (1996) / Chapter Skim
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Chapter Eight. Recommended Computational Procedure
Pages 63-68

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
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From page 63...
... percent heavy vehicles on each approach (THE) peak hour factor WHIT length of study period or length of oversaturated period, hours (T)
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From page 64...
... 'dt Step 7. Actual Value of the Departure Headway The actual departure headway for each lane, based on hectic flow on the opposing and conflicting approaches, is computed based on the probability of each lane having a vehicle waiting at the stop line.
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From page 65...
... All flow rates are increased incrementally and the departure headways are computed for each approach using steps 5 through 9 of this computational procedure until the degree of saturation for any lane reaches one. The current value of flow on each lane is He maximum possible throughput or capacity of that lane.
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From page 66...
... Step 2. Volume Adjustments and Lane Assignment The hourly flow rates are converted to equivalent hourly flow rates using the peak hour factor.
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From page 67...
... AD flow rates are increased incrementally and He departure headways are computed for each approach using steps 5 through 9 of this complexional procure until the degree of saturation for any lane reaches one. The current value of flow on each lane is the maximum possible throughput or capacity of that lane.
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Key Terms

  • flow rates
  • heavy vehicles
  • saturation headways
  • base saturation
  • departure headways

  • hour factor
  • peak hour
  • starting value
  • hourly flow
  • computational procedures

  • actual value
  • approach using
  • saturation headway
  • equivalent hourly
  • final values

  • lane reaches
  • using steps
  • rates using
  • conflicting approaches
  • computed assuming

  • proposed computational
  • recommended computational
  • sample calculation
  • using table
  • stopped delay

  • headway adjustment
  • flow rate
  • headway values
  • intersection approach
  • wad flow


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