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Traffic and Road Safety (TARS) Research Group
Project index
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Driver Perception & Attention
Attention & perceptual effects on speed selection at curves
2000-2002
FRST/PGSF funded project |
A simulator-based experiment comparing three types of curve warning under three levels of mental workload.
Standard advance warning signs
Chevron sight boards at curve tangent point
Pavement advance warning with transverse line approach.
Secondary task involved hands-free cell phone conversation with two levels of difficulty
Curve warnings that highlighted the perceptual features of the curve worked best, particularly in cognitively demanding situations
(i.e., when drivers weren’t paying attention).
Cell phone conversations added to driver workload and drivers became less responsive (elevated speeds & and longer reaction times). |
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Charlton, S.G. (2004). Perceptual and attentional effects on drivers' speed selection at curves.
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