It is often necessary to establish work zones on roadway for pavement and bridge repair and rehabilitation activities. It is common knowledge that each year the highway construction season starts with establishing work zones on roadways and that work zones cause traffic delays. Work zone is defined in the 1994 Highway Capacity Manual (TRB 1994) as 'an area of highway in which maintenance and construction operations are taking place that impinge on the number of lanes available to moving traffic or affect the operational characteristics of traffic flowing through the area.' In order to efficiently plan and schedule work zone operations, it is essential to know the traffic capacity values of work zones. A work zone reduces the available lanes for traffic and therefore causes vehicle deceleration and merging. When traffic flow is below the capacity of a work zone, traffic is delayed primarily by the reduced vehicle speed through the work zone. When traffic flow exceeds the work zone capacity, vehicle queues would form at the work zone and result in additional traffic delays.


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    Title :

    Traffic Characteristics and Estimation of Traffic Delays and User Costs at Indiana Freeway Work Zones


    Contributors:
    J. Yi (author)

    Publication date :

    1999


    Size :

    102 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English