Perception of speed and increments in cars.

Author(s)
Recarte, M.A. Conchillo, A. & Nunes, L.M.
Year
Abstract

In this study some aspects of speed perception were investigated. In a first experiment the participants were passengers of an instrumented car and performed a speed estimation task and two speed production tasks by operating a complementary accelerator: they were instructed either to produce a target speed or to produce a speed increment of a given magnitude. The tests were run in a closed track and the results concerning speed estimation replicated those of Recarte and Nunes (1996). The results suggest that the speed increments are not estimated in themselves but rather in terms of differences between absolute estimated speeds. Two additional experiments focused the production of a target speed under normal driving conditions: one on a conventional road and other on a highway. The findings of the first experiment were essentially replicated: speed overproduction, greater after deceleration than after acceleration, and greater at lower speeds than at higher ones. As higher errors are associated with deceleration, practical implications regarding road safety are derived particularly for sites where a low speed is required. Psychophysical aspects of speed estimation are discussed. For the covering abstract see ITRD E113725 (C 22328 CD-ROM).

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Publication

Library number
C 22430 (In: C 22328 CD-ROM) /83 / ITRD E114141
Source

In: Proceedings of the International Conference on Traffic and Transport Psychology ICTTP 2000, Berne, Switzerland, 4-7 September 2000, Pp-, 18 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.