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Extensions of theoretical capacity models to account for special conditions

Author

Listed:
  • Robinson, Bruce W.
  • Tian, Zongzhong
  • Kittelson, Wayne
  • Vandehey, Mark
  • Kyte, Michael
  • Brilon, Werner
  • Wu, Ning
  • Troutbeck, Rod

Abstract

The computational procedures used to analyze two-way stop-controlled intersections were extended in the National Cooperative Highway Research Project 3-46 to account for a number of effects commonly observed at actual unsignalized intersections. This paper presents theoretical extensions that can account for commonly observed phenomena, such as two-stage gap acceptance when median storage is available; right-turn "sneakers" at flared minor-street approaches; non-random arrivals caused by upstream signals; impedance due to pedestrian crossings; and delay to major-street through vehicles using shared left-turn and through lanes. The individual effects are then combined into an analytical framework suitable for inclusion in the Unsignalized Intersections procedures of the 1997 "Highway Capacity Manual". ©

Suggested Citation

  • Robinson, Bruce W. & Tian, Zongzhong & Kittelson, Wayne & Vandehey, Mark & Kyte, Michael & Brilon, Werner & Wu, Ning & Troutbeck, Rod, 1999. "Extensions of theoretical capacity models to account for special conditions," Transportation Research Part A: Policy and Practice, Elsevier, vol. 33(3-4), pages 217-236, April.
    • Handle: RePEc:eee:transa:v:33:y:1999:i:3-4:p:217-236
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