Measuring drivers’ visual information needs during braking: A simulator study using a screen-occlusion method

M Saffarian, Joost de Winter, J.W. Senders

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
2 Downloads (Pure)

Abstract

It is commonly accepted that vision plays an important role in car braking, but it is unknown how people brake in the absence of visual information. In this simulator study, we measured drivers’ braking behaviour while they had to stop their car at designated positions on the road. The access to visual information was manipulated by occluding the screen at the start of half of the braking trials, while the temporal demand was manipulated by varying the time-to-arrival (TTA). Results showed that for the longer TTA values (⩾6 s), participants in the occlusion condition stopped too early and at variable positions on the road as compared to the control condition. In the occlusion condition, participants were likely to apply an intermediate brake pedal depression, whereas in the control condition participants more often applied low or high pedal depressions. The results are interpreted in light of a distance estimation test, in which we found that participants underestimated the actual distance by 70%.
Original languageEnglish
Pages (from-to)48–65
JournalTransportation Research. Part F: Traffic Psychology and Behaviour
Volume33
DOIs
Publication statusPublished - 2015

Keywords

  • Driving simulator
  • Screen blanking
  • Vehicle deceleration
  • Braking control
  • Driver behaviour
  • Distance perception

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