As a means of saving energy while minimizing the need for passenger cars, vans, and trucks in the Oak Ridge Y-12 Plant, buses are provided which operate along approximately 6 miles of in-plant roads. A bus annunciator system was developed, fabricated, and installed which reduces the waiting time to near zero. The system consists of three separate devices: (1) an ultrasonic transmitter attached to the side of the bus, (2) a solar-powered ultrasonic receiver and radio-frequency transmitter at roadside, and (3) a receiver-annuciator interfaced with building public address systems. The prototype has been tested in only two areas of the Y-12 Plant, but a coded transmitter and receiver make it possible to cover the entire plant. In full operation, approximately 12 roadside units would be employed to give an average of about 2 to 3 min advance notice to personnel in buildings and offices along the two bus routes inside the Y-12 Plant. (ERA citation 81:025757)


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    Title :

    Bus Annunciator System


    Contributors:
    D. W. Carver (author) / M. G. Duncan (author)

    Publication date :

    1981


    Size :

    13 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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