Effects of variable message signs for slippery road conditions on driving speed and headways

Pirkko Rämä (Corresponding Author), Risto Kulmala

Research output: Contribution to journalArticleScientificpeer-review

52 Citations (Scopus)

Abstract

This field study investigated the effects of two variable message signs (VMS) on driver behaviour. Specifically, the signs were a warning sign for slippery road conditions and a minimum headway sign. The study was performed as a before-and-after experiment at three test sites in Finland with an after period covering two winter seasons. The results showed that the slippery road condition sign reduced the mean speed on slippery roads by 1–2 km/h in addition to the decrease caused by the adverse road conditions. The minimum headway sign decreased the proportion of headways shorter than 1.5 s for cars in car-following situations, in addition to a speed reduction of 1 km/h. The effects were somewhat smaller during the second winter than the first.

Original languageEnglish
Pages (from-to)85 - 94
Number of pages10
JournalTransportation Research Part F: Traffic Psychology and Behaviour
Volume3
Issue number2
DOIs
Publication statusPublished - 2000
MoE publication typeA1 Journal article-refereed

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Variable message signs
Finland
Railroad cars
road
Experiments
driver
experiment

Cite this

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Effects of variable message signs for slippery road conditions on driving speed and headways. / Rämä, Pirkko (Corresponding Author); Kulmala, Risto.

In: Transportation Research Part F: Traffic Psychology and Behaviour, Vol. 3, No. 2, 2000, p. 85 - 94.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Rämä, Pirkko

AU - Kulmala, Risto

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