COMPARING PILOTS' TAXI PERFORMANCE, SITUATION AWARENESS ANDWORKLOAD USING COMMAND-GUIDANCE, SITUATION-GUIDANCE ANDHYBRID HEAD-UP DISPLAY SYMBOLOGIES

摘要

This study investigated pilots' taxi performance, situation awareness and workload while taxiingrnwith three different head-up display (HUD) symbology formats: Command-guidance, Situationguidancernand Hybrid. Command-guidance symbology provided the pilot with required controlrninputs to maintain centerline position; Situation-guidance symbology provided conformal, scenelinkedrnnavigation information; while the Hybrid symbology combined elements of bothrnsymbologies. Taxi performance was assessed with average taxi speed and root mean square errorrn(RMSE) from the centerline. Situation awareness and workload were assessed using a 3-rnDimension SART and a 7-point scale, respectively. Taxi speeds were highest and RMSE fromrncenterline lowest with Situation-guidance and Hybrid symbologies. Situation awareness wasrnhighest and workload lowest with Situation-guidance and Hybrid symbologies. These results arernthought to be due to cognitive tunneling induced by the Command-guidance symbology.rnSituation-guidance (and Hybrid) HUD symbologies provided a common reference with thernenvironment, which may have supported better distribution of attention.