Sustainability, Volume 10, Issue 10 (October 2018) – 468 articles
Cover Story (view full-size image): Controlling vehicle speed is a key tenet of the safe systems approach to road safety. Most research shows that raising speed limits results in more injuries. Advocates of higher speed limits argue that this conclusion is based on older research, that traffic fatalities are decreasing despite higher limits, and that modern vehicles can travel safely at higher speeds. These arguments were used to justify raising speed limits on rural highways in British Columbia, Canada (July 2014). We evaluated the impact of these speed limit increases on fatal crashes, auto-insurance claims, and ambulance dispatches for road trauma. Events were mapped to road segments with increased speed limits and to nearby road segments. Separate linear regression models were fitted for each outcome and road segment group. Models included gasoline sales to account for changes in vehicle travel. View this paper
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