Continuous flow intersections (CFIs) were invented to improve traffic operations of conventional intersections that suffer severe congestion caused by heavy left-turn movements by eliminating the protected left-turn phase and thus increasing the intersection capacity and reducing the number of conflict points. However, since drivers in the USA are not familiar with the operations of CFIs, there is a need to evaluate CFIs in terms of driver behavior, safety, and operational efficiency. In addition, there is a need to quantify the environmental impacts associated with CFI operations. The research presented in this paper assesses the operation of CFIs by conducting before and after field and simulation evaluations. The study concludes that drivers are initially unfamiliar with the operational characteristics of CFIs. These problems are found to be temporary and are resolved once drivers become acquainted with the operation of CFIs. The simulation analysis demonstrates how the introduction of a CFI results in operational improvements, fuel savings, and vehicle emissions reductions at different total traffic demand levels and for varying left turn volumes. The study demonstrates that CFIs are more robust to fluctuations in overall intersection demand levels and the left turning volumes compared to conventional signalized intersection control.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Continuous flow intersections: A safety and environmental perspective


    Contributors:


    Publication date :

    2010-09-01


    Size :

    479673 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Continuous Flow Intersections

    Goldblatt, Reuben | Online Contents | 1994


    Geometric and Operational Improvements at Continuous Flow Intersections to Enhance Pedestrian Safety

    Coates, Angela / Yi, Ping / Liu, Peng et al. | Transportation Research Record | 2014



    Safety at intersections

    Murray, V.S. | Engineering Index Backfile | 1940


    Intersections control and safety

    Pratelli, Antonio | SLUB | 2013