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Centre for Automotive Safety Research
THE UNIVERSITY OF ADELAIDE
SA 5005 AUSTRALIA
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Publication Details

TitleFurther insights in to an urban area with lower speed limits: the Unley case study
AuthorsWoolley JE, Dyson C
Year2003
TypeConference Paper
AbstractPrevious papers by the authors have documented experiences in the City of Unley in relation to a citywide 40 kmlh speed limit. The ongoing research, now in its 12th year, has done much to reveal how residents and motorists respond to a low urban speed limit. This paper documents further findings in relation to enforcement and crash outcomes as separate issues and some discussion is made on the possible impacts of the new 50 kmlh General Urban Speed Limit (GUSL). A trial with enforcement on 40 kmlh local roads was conducted to determine halo effects in combination with traffic monitoring equipment. Laser gun enforcement was shown to be most effective with an effect lasting up to 10 days from the time of deployment. Speed feedback signs (at enforcement sites) were shown to have no halo effect and lost effectiveness with continued deployment at the same site. In reviewing crash data from before and after the implementation of the 40 km/h scheme, it is concluded that the 40 km/h speed limit has been responsible for a reduction in crashes on local roads given the 60 km/h GUSL operating elsewhere (now 50 km/h).
ISBN0731053958
Conference NameRoad Safety Research, Policing and Education Conference
Conference AbbreviationRSR
Conference LocationSydney, Australia
Conference Date24-26 September 2003
Journal Volume (Issue)1
Page Range295-302
Page Count8

Reference
Woolley JE, Dyson C (2003) 'Further insights in to an urban area with lower speed limits: the Unley case study', Proceedings of Road Safety Research, Policing and Education Conference, pp 295-302.


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