Heavy Vehicle Driver Workload Assessment. Task 6. Baseline Data Study. Final211 Report Supplement

摘要

The report consists of an empirical establishment of heavy vehicle driver211u001ebaseline performance data. Researchers interested in highway safety have called 211u001eout the need for rudimentary workload data so that they might have a basis for 211u001ecomparison of workload associated with particular in-cab high technology devices. 211u001eThirty professional drivers participated and were asked to perform a series of 211u001etasks during over-the-road drives involving both open road driving and close car 211u001efollowing in both day and night conditions. The requested tasks included looking 211u001eat right and left mirrors, adjusting CB volume, changing CB frequency, manually 211u001etuning the radio, adjusting radio volume, reading clock, reading air pressure, 211u001eadjusting the heating or air conditioning, and calculating available driving 211u001ehours. Drivers were measured with respect to visual allocation; steering, 211u001eaccelerator, and brake inputs; speed and headway maintenance; and lanekeeping. 211u001eResults indicated that, to a varying degree, visual allocation measures, several 211u001esteering measures, speed variance, and several lane position measures are 211u001epreferable measures for further workload assessment.