This paper presents a regression model which is developed to estimate entry capacity of an approach on a roundabout for Indian traffic conditions. The entry capacity of an approach on a roundabout is expected to depend on the circulating traffic flow in front of that approach and the safe opportunity for vehicles entering that flow. The relationship between entry capacity and circulating traffic flow is found to be negative exponential i.e. the entry capacity decreases exponentially with an increase in the circulating traffic flow. The analysis also indicated that the widths of circulating roadways and central island diameters have a significant influence on the entry capacity. The circulating traffic flow versus entry capacity charts were made with the purpose of comparing the results of the proposed model with the existing models available in the literature, namely Jordanian, Malaysian, and Indian. The comparison indicated that the proposed entry capacity model gave the highest entry capacity, whereas the Malaysian model gave the lowest entry capacity. The results of the proposed model have shown very good relationship with the field entry flow data, as compared to other models. Hence, this model is suggested to estimate entry capacity on roundabouts under similar varied traffic flow conditions in developing countries.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Regression model for entry capacity of a roundabout under mixed traffic condition – an Indian case study


    Contributors:

    Published in:

    Transportation Letters ; 9 , 5 ; 243-257


    Publication date :

    2017-10-20


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    MODELLING ROUNDABOUT ENTRY CAPACITY FOR MIXED TRAFFIC FLOW USING ANN: A CASE STUDY IN INDIA

    Aarohi Kumar MUNSHI / Ashish Kumar PATNAIK | DOAJ | 2024

    Free access

    Determining Roundabout Capacity by Modifying HCM Model Under Mixed Traffic Conditions

    Sandaruwan, M. A. K. / Karunarathne, H. K. D. T. / Wickramasinghe, W. M. V. S. K. | Springer Verlag | 2020


    Determining Roundabout Capacity by Modifying HCM Model Under Mixed Traffic Conditions

    Sandaruwan, M. A. K. / Karunarathne, H. K. D. / Wickramasinghe, W. M. V. S. K. | TIBKAT | 2021


    Effect of vehicle composition and delay on roundabout capacity under mixed traffic conditions

    Dodappaneni Abhigna / Sindhu Kondreddy / K. V. R. Ravi Shankar | DOAJ | 2016

    Free access