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Development and Application of Safety Performance Functions in Project Delivery
Iowa
Based on models of Safety Performance Functions (SPFs), Iowa screened roadway facilities for Potential for Crash Reduction (PCR). PCR was then applied to project screening and prioritization, intersection projects, Super-2 corridor studies, a pilot safety corridor program, and environmental assessments.
A Data-Driven Pedestrian Safety Analysis at Bus Stops in Georgia
Georgia
Using a proactive and systemic approach in collaboration with transit agencies allowed GDOT to implement a series of economically justified safe crossing projects.
GDOT incorporated visibility enhancements and friction improvements on rural curves after finding that lane departures represented a large proportion of fatalities on curves.
The nighttime fatality rate on the nation's roadways is three times higher than the daytime rate, and 76% of pedestrian fatalities occur at night. FHWA offers tools including safety countermeasures, updated and new approaches for lighting design and traffic control devices.
In 2023, FHWA published results of a survey to establish a baseline of Complete Streets and active transportation, finding trends and notable projects in each of the 50 states, Washington, D.C., and Puerto Rico.
With 40% of fatalities and serious injuries occurring at low-volume, unsignalized intersections, DelDOT implemented All-Way Stop Control. After three years, there were zero fatalities and 82% fewer injury crashes at the intersections evaluated.
