Citation

Lobjois R, Cavallo V. Accid. Anal. Prev. 2007; 39(5): 934-943.

Affiliation

French National Institute for Transportation and Safety Research, Laboratory of Driver Psychology, 2 Avenue du General Malleret-Joinville, 94114 Arcueil, France.

Copyright

(Copyright © 2007, Elsevier Publishing)

DOI

10.1016/j.aap.2006.12.013

PMID

17275774

Abstract

Two experiments were conducted to study how age affects street-crossing decisions in an estimation task, with particular emphasis on how oncoming vehicle speed and a time constraint influence the time gap deemed acceptable for crossing. Experiment 1 showed that when there was a time constraint, all age groups selected a shorter time gap for the higher speed. This was associated with a large number of missed opportunities for the low speed and many unsafe decisions for the high speed. In the second experiment, which had no time constraint, young pedestrians operated in a constant-time mode regardless of speed, whereas older pedestrians accepted shorter and shorter time gaps as speed increased. The results seem to indicate that the effect of speed is due to a mixed operating mode of participants, whose decisions may be based on either time or vehicle distance, depending on the task requirements and on the participant's own ability to meet those requirements.

Language: en