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A New Perspective for Saturation Flows at Signalized Intersections

Periodica polytechnica. Civil engineering. Bauingenieurwesen, 2019-01, Vol.63 (1), p.296 [Peer Reviewed Journal]

Copyright Periodica Polytechnica, Budapest University of Technology and Economics 2019 ;ISSN: 0553-6626 ;EISSN: 1587-3773 ;DOI: 10.3311/PPci.11344

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  • Title:
    A New Perspective for Saturation Flows at Signalized Intersections
  • Author: Murat, Yetis Sazi ; Cetin, Murat
  • Subjects: Capacity ; Driver behavior ; Driving conditions ; Intersections ; Parameters ; Queues ; Reaction time ; Saturation ; Traffic ; Traffic accidents & safety ; Traffic capacity ; Traffic signals ; Vehicles
  • Is Part Of: Periodica polytechnica. Civil engineering. Bauingenieurwesen, 2019-01, Vol.63 (1), p.296
  • Description: Saturation flow is one of the fundamental parameter that is used to define the level of service, to assign signal timings and other traffic operations. In the conventional approaches (Highway Capacity Manual, Canadian Capacity Guide etc.) base value is adjusted by the parameters that represent field and traffic conditions. Although the results obtained are acceptable, the adjustment parameters may not reflect the field conditions properly in many countries and does not represent any effects on driver behavior. This paper presents a new formula for saturation flow based on driver behavior and some vehicle characteristics. In this formula, mean length, headway and acceleration rates of vehicles, saturation speeds of intersection and mean reaction time of vehicles in a queue are considered. The formula is tested with field data and compared to the values obtained by the HCM, CCG (Canadian Capacity Guide) and the Akcelik approaches. Based on these comparisons, it is commented that estimation of the new formula is promising.
  • Publisher: Budapest: Periodica Polytechnica, Budapest University of Technology and Economics
  • Language: English;German;Russian
  • Identifier: ISSN: 0553-6626
    EISSN: 1587-3773
    DOI: 10.3311/PPci.11344
  • Source: Alma/SFX Local Collection
    ProQuest Central
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