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Journal Article

Citation

Stephan K, Lenné MG, Corben BF. Proc. Australas. Road Safety Res. Policing Educ. Conf. 2007; 11.

Copyright

(Copyright © 2007, copyright holder varies, Publisher Monash University)

DOI

unavailable

PMID

unavailable

Abstract

In this study, repeater speed signs (RSS) were installed on two routes in the Melbourne CBD, and a controlled before-and-after study was conducted. Vehicle speeds were measured for two 14 day periods; the first prior to installation of RSS, and the second after installation. Changes in average vehicle speed on the treatment routes after installation of RSS were compared to changes in vehicle speeds on the control routes over the same time-frame. Considering the effectiveness of RSS might vary according to the day of the week and time of day, the recording periods were categorised into six time periods. There was a strong net reduction in mean speed after installation of RSS during all six time periods, the minimum being a net 1.59 km/h reduction during the day on weekdays, to the maximum of a net 3.63 km/h reduction on weekend nights. The proportion of speeding vehicles was also significantly reduced. These results indicate that installation of RSS can effectively reduce travel speeds in 50 km/h speed zones.

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