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Safety Performance Study of a Shared Pedestrian and Vehicle Space in New Zealand
Transportation Research Board Business Office
500 Fifth Street, NW
Road users in a shared space are expected to travel at low operating speeds or very near walking speeds. This expectation is to ensure an urban street functions as a ‘place’ and that the dominance of the vehicular traffic is neutralised. The implementation of a shared space concept in a public road requires a safety evaluation, especially for vulnerable road users like pedestrians and cyclists. However, this evaluation is more difficult as there are potential traffic conflicts across the whole road corridor (public right-of-way), except the designated areas that are free of vehicles. This paper presents the results of a safety analysis of a shared zone in Auckland, New Zealand. Along with the recorded crash history, the before (2010) and after (2011 & 2012) data was systematically collected using video surveys and traffic counters. The vehicle speeds, volumes and road user interactions were processed and analysed. The outcome of the vehicle speed study highlights the need for traffic calming to be incorporated into the shared space design in order to restrain the vehicle operating speed, especially for off-peak periods. Further, this study challenges the traditional notation and application of the continuum of traffic events where potential conflicts (termed ‘interactions’ in this study) and uninterrupted passages are the foundation of the number of injury or fatal crashes, specifically in a shared pedestrian and vehicle space environment.
This paper was sponsored by TRB committee ANF10 Pedestrians.
Monograph Accession #:
Transportation Research Board
500 Fifth Street, NW
Wilson, Douglas James
Transportation Research Board 93rd Annual Meeting
Figures; References; Tables
Highways; Operations and Traffic Management; Pedestrians and Bicyclists; Safety and Human Factors; I73: Traffic Control; I82: Accidents and Transport Infrastructure
Transportation Research Board Annual Meeting 2014 Paper #14-0244
TRIS, TRB, ATRI
Jan 27 2014 2:11PM