This report contains the results of a simulator study conducted to serve as a supplement to a NHTSA heavy vehicle driver workload field study. Its purpose was the evaluation of effects of cellular phone and text message display use tasks on driver-vehicle performance. Fourteen truck drivers participated and were asked to engage in three cellular phone dialing tasks (auto-dialing; local 7-digit dialing; and long-distance dialing), two cognitive cellular phone tasks (responding to questions of a biographic nature or involving mental arithmetic), and seven CRT text message reading tasks (tachometer checking, time checking, radio tuning, 4-line reading, auto-dial, local-dial, and long-distance dial). Driver-vehicle performance was also evaluated relative to traffic density. Results indicated that driver-vehicle performance varied with respect to each of the three kinds of in-cab tasks. Performance was also differentiated with respect to traffic density, although to a lesser extent. Of note is that the CRT reading tasks had a relatively more noticeable impact on driver-vehicle performance than did either the dialing or cognitive tasks. This report concludes with a comparison of simulator and on-the-road data collection results and prospects for future heavy vehicle driver workload assessments.


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    Title :

    Heavy Vehicle Driver Workload Assessment. Task 7B. In-Cab Text Message System and Cellular Phone Use by Heavy Vehicle Drivers in a Part-Task Driving Simulator. Final Report Supplement


    Contributors:
    R. Hanowski (author) / B. Kantowitz (author) / L. Tijerina (author)

    Publication date :

    1996


    Size :

    102 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English