Evaluation of Raised Safety Platforms (RSP) On-Road Safety Performance

Brendan Lawrence, Brian Fildes, Peter Cairney, Stephanie Davy and Amir Sobhani
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Brendan Lawrence: Monash University Accident Research Centre, Clayton, VIC 3800, Australia
Brian Fildes: Monash University Accident Research Centre, Clayton, VIC 3800, Australia
Peter Cairney: ARRB Transport, Port Melbourne, VIC 3207, Australia
Stephanie Davy: ARRB Transport, Port Melbourne, VIC 3207, Australia
Amir Sobhani: Safer Roads, Department of Transport, Sunshine, VIC 3020, Australia

Sustainability, 2021, vol. 14, issue 1, 1-13

Abstract: A Raised Safety Platform (RSP) is a relatively new physical road safety intervention at major intersections. They aim to enhance road user safety by reducing vehicle speeds at intersections using an acute vertical deflection to the vehicle path. This study measured the change in speed at selected high-volume intersections treated with an RSP. It was a 12-month study based on a controlled before-and-after-treatment design, with speed and other measures assessed at six treated and five control intersections. Statistically significant and meaningful reductions in speeds were observed given the treatment and adjusted for the control group. A 15.6% reduction in the central tendency of speed was found overall. The odds of a vehicle exceeding nominal Safe System speeds of 30 km/h, 40 km/h, and 50 km/h also reduced markedly, with greater reductions observed at the higher speed thresholds (46%, 69%, and 80%, respectively). The change in speed corresponded to an estimated aggregate-level injurious crash-reduction benefit of around 26% and a reduction in the likelihood of a serious injury given a crash of between 38% to 57% depending on the crash type. It was concluded that RSP is an effective Safe System treatment to reduce speeds at major intersections to levels similar that at roundabouts. The results suggest that well designed RSPs at signalised intersections are an effective and sustainable Safe System treatment.

Keywords: road safety; crashes; serious injury; fatalities; vulnerable road user; modal shift; travel behaviour; exposure (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2021:i:1:p:138-:d:709693

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