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  Perceptual quirk induces safe driving in fog

Pretto, P., Bresciani, J.-P., & Bülthoff, H. (2010). Perceptual quirk induces safe driving in fog. Poster presented at 33rd European Conference on Visual Perception (ECVP 2010), Lausanne, Switzerland.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BEE6-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-9DCA-A
Genre: Poster

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 Creators:
Pretto, P1, 2, Author              
Bresciani, J-P1, 2, Author              
Bülthoff, HH1, 2, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Perceived speed of moving patterns is lower when visual contrast is reduced. In recent driving simulation experiments, this has been presented as an explanation why drivers might drive too fast in fog. In this simulation, contrast was equally reduced for all objects in the scene, independently of their distance from observer (distance-independent contrast reduction). In fog, however, contrast is reduced more for more distant objects (distance-dependent contrast reduction). We compared the effects of these two types of contrast reduction on both perceived and actual driving speed. In the first experiment twelve participants were presented with pairs of driving scenes—one with clear visibility, one with reduced contrast—and instructed to estimate which scene moved faster. Speed was underestimated with distance-independent contrast reduction but overestimated with distance-dependent contrast reduction. In the second experiment, ten drivers drove at target speeds under clear and reduced visibility conditions without tachometer. Participants increased speed with distance-independent contrast reduction but decreased speed with distance-dependent contrast reduction. These results show how visibility loss can lead to opposite perceptual and behavioural effects, depending on the nature of the underlying visual contrast reduction. In fog, indeed, the visual system fools drivers the safe way, advising them to decelerate.

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 Dates: 2010-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: PrettoBB2010
DOI: 10.1177/03010066100390S101
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Title: 33rd European Conference on Visual Perception (ECVP 2010)
Place of Event: Lausanne, Switzerland
Start-/End Date: 2010-08-22 - 2010-08-26

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 39 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 168 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369