A computer program to model capacities, queues and delays at roundabouts is described. It incorporates the latest roundabout entry capacity formula and time-dependent queueing equations. The basic inputs are certain geometric characteristics of the roundabout, the turning proportions of the traffic, the percentage of heavy vehicles in the traffic and a time 'profile' of demand flows (or less detailed demand flow information from which the program synthesises a profile). The program calculates, for each of a succession of time intervals, the capacity, queue length and delay for each entry and enables the growth and decay of queues to be monitored and the calculation of overall delay. A full example is included.


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    Title :

    ARCADY: A Computer Program to Model Capacities, Queues and Delays at Roundabouts


    Contributors:

    Publication date :

    1980


    Size :

    40 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English