Driver behaviour at horizontal curves: risk compensation and the margin of safety

Yiik Diew Wong; Alan Nicholson

doi:10.1016/0001-4575(92)90053-L

Driver behaviour at horizontal curves: risk compensation and the margin of safety

Yiik Diew Wong^*, Alan Nicholson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

A study involving unobtrusive observation of drivers at horizontal curves before and after realignment is described. The speeds and path radii adopted by drivers in the curves before and after realignment are compared, as are the levels of side friction demanded by each driver while negotiating the curves before and after realignment. The results reveal substantial variations between drivers (with respect to speed, path radius, and side friction demand) and between the path and curve radii. While vehicle speeds increased markediy, the side friction demand was reduced for all curves except one. It is concluded that the margin of safety was increased for all curves, and this is supported by the accident data.

Original language	English
Pages (from-to)	425-436
Number of pages	12
Journal	Accident Analysis and Prevention
Volume	24
Issue number	4
DOIs	https://doi.org/10.1016/0001-4575(92)90053-L
Publication status	Published - Aug 1992
Externally published	Yes

ASJC Scopus Subject Areas

Human Factors and Ergonomics
Safety, Risk, Reliability and Quality
Public Health, Environmental and Occupational Health

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/0001-4575(92)90053-L

Cite this

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abstract = "A study involving unobtrusive observation of drivers at horizontal curves before and after realignment is described. The speeds and path radii adopted by drivers in the curves before and after realignment are compared, as are the levels of side friction demanded by each driver while negotiating the curves before and after realignment. The results reveal substantial variations between drivers (with respect to speed, path radius, and side friction demand) and between the path and curve radii. While vehicle speeds increased markediy, the side friction demand was reduced for all curves except one. It is concluded that the margin of safety was increased for all curves, and this is supported by the accident data.",

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AB - A study involving unobtrusive observation of drivers at horizontal curves before and after realignment is described. The speeds and path radii adopted by drivers in the curves before and after realignment are compared, as are the levels of side friction demanded by each driver while negotiating the curves before and after realignment. The results reveal substantial variations between drivers (with respect to speed, path radius, and side friction demand) and between the path and curve radii. While vehicle speeds increased markediy, the side friction demand was reduced for all curves except one. It is concluded that the margin of safety was increased for all curves, and this is supported by the accident data.

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Driver behaviour at horizontal curves: risk compensation and the margin of safety

Abstract

ASJC Scopus Subject Areas

UN SDGs

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