The objective of this study was to measure the effectiveness of a coloured slurry seal traffic calming treatment, used to "narrow" lanes of a road, in reducing driving speeds and traffic volume on residential streets. A before-and-after study with a comparison group was used to measure the effect of the treatment on the average 85th percentile and average traffic volume for the treated street. The before-and-after study did not naively consider changes on the treated road but also examined changes that may be taking place in the overall behaviour of traffic. Traffic data for this study was collected from the treatment and control sites prior the traffic measure being installed and then collected one month following the treatment and four months following the completion of the treatment installation. For the covering abstract of the conference see ITRD number E211521.
Samenvatting