Driver adaptation to lane keeping assistance systems: Do drivers become less vigilant?

摘要

Driver adaptation to semi-autonomous vehicles is examined in this study using a longitudinal drivingrnsimulator study with 18 subjects randomly assigned to a control (n = 9) and treatment (n = 9) group. ArnTactile Detection Response Task (TDRT) was used to measure cognitive workload while drivers engagedrnin visual-manual distracting tasks using an in-vehicle information system, with and without a lane-keepingrnassistance system (baseline, intervention, and withdrawal period). Measures of miss rate and reaction timernto the TDRT stimuli suggest that drivers in both groups showed decreases in cognitive workload as theyrngained experience. Participants in the treatment group experienced higher cognitive workload when thernlane keeping assistance system was withdrawn. On average, there were greater decreases in cognitivernworkload over time for the difficult tasks as compared to the easy tasks for both the control and treatmentrngroups. The effect was more pronounced in the control group with larger decreases in cognitive workload.rnThe NASA TLX was also comparable to the task accuracy. These results suggest that adaptations in driverrnbehavior due to exposure to automation may have transfer effects on cognitive workload and thus may leadrnto safety implications.