Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/28620
Type: Conference paper
Title: Evaluation of the 50km/h default urban speed limit in South Australia
Author: Kloeden, C.
Woolley, J.
McLean, A.
Citation: Proceedings of the 2004 Road Safety Research, Policing and Education Conference: v.1, pp. 1-11
Part of: 2004 Road Safety Research, Policing and Education Conference, Proceedings Volume 1
Publisher: Road Safety Council
Publisher Place: Perth, Western Australia
Issue Date: 2004
ISBN: 0730724921
Conference Name: Road Safety Research, Policing & Education Conference 2004 (14 November 2004 : Perth, Western Australia)
Statement of
Responsibility: 
C. Kloeden, J. Woolley and J. McLean
Abstract: On the 1st March 2003 the Default Urban Speed Limit (DUSL) in South Australia was lowered from 60 km/h to 50 km/h. Since this date, all urban roads have a speed limit of 50 km/h unless otherwise signed. This paper reports the results of an evaluation of the effectiveness of the reduced DUSL and is based on speed surveys and crash data analysis. Vehicles speeds were measured at 52 randomly chosen sites across the State. Crash data was analysed by examining the crash history of all roads with a 50 km/h or 60 km/h speed limit, a year before and after the new DUSL was introduced. The study found that, on average, mean speeds have fallen by approximately 2.2 km/h on streets where the speed limit was reduced and by 0.7 km/h on arterial roads where 60 km/h speed limit signs were erected. There was a 19.8% reduction in casualty crashes on 50 km/h roads and a corresponding 4.6% reduction on 60 km/h arterial roads when compared with the previous year.
Keywords: Speed limit; Accident rate; Legislation
RMID: 0020042365
Appears in Collections:Centre for Automotive Safety Research conference papers

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