The effects of in-car speed limiters: Field studies

Tapani Mäkinen, András Várhelyi (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

83 Citations (Scopus)

Abstract

Field trials in three European countries, the Netherlands, Spain and Sweden were carried out in order to investigate the effects of an in-car speed limiter. The trials were carried out on urban and rural roads including motorways. A so-called unobtrusive instrumented car was used, where all the measuring equipment was hidden. All the speed limit categories in the respective countries, ranging from 30 to 120 km/h were included. The results showed that the effects of the limiter were greatest in free driving conditions outside platoons. However, the limiter also had effects in congested traffic. Momentary high speeds were suppressed effectively, which resulted in less variation of speeds. Approach speeds at roundabouts, intersections and curves became smoother, car-following behaviour became safer in the speed range of 30–50 km/h. On the other hand, in the speed range of 70–90 km/h a slightly higher number of short time-gaps suggested less safe car-following behaviour. Other negative behavioural effects were slightly increased travel time and the increased frustration and stress for the drivers caused by the limiter. The majority of the subjects accepted the speed limiter as a driver-operated system. Half of the drivers would accept the limiter voluntarily in their cars.
Original languageEnglish
Pages (from-to)191-211
Number of pages21
JournalTransportation Research Part C: Emerging Technologies
Volume9
Issue number3
DOIs
Publication statusPublished - 2001
MoE publication typeA1 Journal article-refereed

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Limiters
Railroad cars
driver
Rural roads
speed limit
frustration
Travel time
Sweden
Netherlands
Spain
travel
road
traffic

Keywords

  • in-vehicle speed limiter
  • field trials
  • instrumented car
  • speed
  • car-following behaviour
  • travel time
  • giving-way behaviour
  • driver workload
  • driver acceptance

Cite this

Mäkinen, Tapani ; Várhelyi, András. / The effects of in-car speed limiters : Field studies. In: Transportation Research Part C: Emerging Technologies. 2001 ; Vol. 9, No. 3. pp. 191-211.
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The effects of in-car speed limiters : Field studies. / Mäkinen, Tapani; Várhelyi, András (Corresponding Author).

In: Transportation Research Part C: Emerging Technologies, Vol. 9, No. 3, 2001, p. 191-211.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - The effects of in-car speed limiters

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AU - Várhelyi, András

N1 - Project code: Y6SU00446

PY - 2001

Y1 - 2001

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