Abstract
Drivers’ steering adjustments can be categorized into one-time and chain corrections. One-time corrections lead to no further steering corrections for a minimum of one second, while chain corrections have at least two consecutive steering actions. Chain corrections represent a novel indicator of steering instability. Evolving vehicle dynamics along with drivers’ state and situational factors can cause these different correction types. In a driving simulator study, drivers’ experienced different roadway widths with and without distraction. The results show that higher steering wheel angle values at the beginning or end of a correction lead to chain corrections and the duration of these corrections tends to be shorter than adjustments not leading to chain corrections. Exploring the underlying causes of different corrections can guide efforts to model drivers’ control actions in recovering from distractions and in taking over control during automation failures.
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