Presentation
Do Drivers Accurately Estimate Time-Required-to-Turn in Left-Turn Scenarios?
SessionPoster Session 1
DescriptionWhile making left turns across oncoming traffic, drivers must judge whether they have enough time to complete the maneuver safely. This requires drivers to estimate the time required for oncoming vehicles to reach them (time-to-collision or TTC) and the time required to complete the turn (TRT). Although prior studies measured the accuracy of TTC judgments of oncoming vehicles, less is known about TRT judgments. We measured (1) drivers’ judgments of the last safe moment to turn in front of motorcycles and trucks travelling at 30 and 40 mph, and (2) drivers’ TRT judgments. Drivers underestimated TRT. A post-study questionnaire indicated that most participants believed their estimated TRTs were shorter than their actual left turns. Perceived safety margins (the judged last safe moment to turn minus estimated TRT) were larger for trucks than for motorcycles, and larger for slower vehicles compared to faster vehicles. Results have implications for design of technologies to aid drivers while making left turns. This material is based upon work supported by the National Science Foundation under Award No.2241704. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.
Event Type
Poster
TimeTuesday, October 14th5:30pm - 6:30pm CDT
LocationRiverside East
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