GDOT incorporated visibility enhancements and friction improvements on rural curves after finding that lane departures represented a large proportion of fatalities on curves.
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.
When fatal crash toxicology data showed an increase of cannabis by drivers, CTDOT worked with CTHSO, GHSA, and other partners to raise awareness of the dangers of driving impaired.
ARDOT evaluated mumble strips as a variation of rumble strips that reduce noise pollution while maintaining driver safety. They found comparable safety effectiveness with less environmental impact.
NJDOT has integrated the six principles and five elements of the Safe System Approach (SSA) into its programs, practices, and projects, aiming to achieve zero fatalities and serious injuries on all public roads.
Using Before and After Tools to Make Data Driven Safety Decisions
New Jersey
As part of the HSIP, NJDOT uses observational before/after analyses with a volume adjustment tool to evaluate countermeasure effectiveness and safety benefits. For example, post-deployment evaluation of centerline rumble strips showed a total crash cost benefit of more than $11 million for all target crashes.
The NHDOT Wrong-Way Driver Action Plan aims to address the increasing threat of wrong-way drivers by identifying risk factors and guiding systemic deployment of countermeasures.
NHDOT used a data-driven process to identify and implement Safe System countermeasures to improve safety on Route 101. The selected alternative—6-foot median buffer with rumble strips and wider pavement markings—addresses both head-on and run-off-road crashes at a much lower cost than median barriers, which extends the project limits from 1.2 miles to 4.7 miles.
