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· 2018
The objective of the study was to evaluate the safety effects of two countermeasures with respect to vehicle–pedestrian crashes—the provision of protected or protected/permissive left-turn phasing and the provision of leading pedestrian intervals (LPIs)—using a before–after empirical Bayesian methodology. The study used data from North American cities that had installed one or both of the countermeasures of interest, including Chicago, IL; New York City, NY; Charlotte, NC; and Toronto, ON. This study showed that the provision of protected left-turn phasing reduced vehicle–vehicle injury crashes but did not produce statistically significant results for vehicle–pedestrian crashes overall. A disaggregate analysis of the effect of protected or protected/permissive left-turn phasing on vehicle–pedestrian crashes indicated that this strategy may be more beneficial when there are higher pedestrian and vehicle volumes, particularly above 5,500 pedestrians per day. At these high-volume locations, the left-turn phasing evaluation resulted in a potential benefit–cost (B/C) ratio range of 1:15.6::1:38.9. The evaluation of LPIs showed that the countermeasure reduced vehicle–pedestrian crashes. This evaluation produced a crash modification factor of 0.87 with a potential B/C ratio range of 1:207::1:517.
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Many of the roads in the U.S. are non-Interstate, local and rural roads that are maintained and operated by local agencies, such as towns, counties, and Tribal governments. Non-motorized modes of travel, such as biking, walking, and riding horses or horse-drawn carriages can be expected along these roads and may face safety concerns when utilizing the same roadway as motorized travelers. This Non-Motorized User Safety Manual focuses on low-volume local rural roadways and rural villages and describes a process that can be used to address the safety of non-motorized users. It provides a concise toolbox of resources and information for addressing non-motorized safety concerns, and provides evaluation methods for locally-implemented initiatives to address the safety of non-motorized users.