Tau as a potential control variable for visually guided braking.

Author(s)
Rock, P.B. & Harris, M.G.
Year
Abstract

D. N. Lee (1976) described a braking strategy based on optical expansion in which the driver brakes so that the target's time-to-contact declines around a constant slope in the range -0.5 < or = tau < 0. The present results from a series of braking simulations confirm and extend earlier reports (E. H. Yilmaz & W. H. Warren, 1995) that performance is broadly compatible with the tau hypothesis. However, performance was not enhanced in situations that favored the estimation of tau, and unlike in earlier reports, performance deteriorated in the absence of a ground plane that provided information about speed and target distance. This finding suggests that the tau hypothesis does not provide a complete account of braking control. (Author/publisher)

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Publication

Library number
20061119 ST [electronic version only]
Source

Journal of Experimental Psychology; Human Perception and Performance, Vol. 32 (2006), No. 2 (April), p. 251-267, 20 ref.

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.