State Safety Initiative Database

Explore relevant case studies by filtering via agency, keyword, or pre-set filters in the left menu, or by using the topic tags located at the bottom of the page.

Enabling Agencies for Integration of Artificial Intelligence into TSMO

FHWA
Recognizing the increasing opportunity artificial intelligence may play to support roadway operations, USDOT FHWA has created the AI COE dedicated to providing technical resources and support to deployers. At the 2026 AASHTO Safety Summit, this poster solicited technical resources desired by deployers.

Nevada Department of Transportation Context Classification with Arcadis

Nevada
Nevada Department of Transportation (NDOT), in partnership with Arcadis, successfully developed and implemented a statewide Context Classification Program to support transportation planning, design, safety, and asset management activities.

Connecticut: Safety Practices on a Shoestring Budget

Connecticut
Not enough HSIP funding? Check out innovative ways to implement safety on existing infrastructure projects.

Piloting a Research-Backed Pedestrian Crossing Treatment Toolkit

Delaware
Delaware DOT is testing the pedestrian crossing toolkit developed under NCHRP 03-143. This spreadsheet-based resource incorporates roadway context and yielding data from hundreds of field study sites to help practitioners select treatments for unsignalized intersections and midblock crossings.

Leveraging ARNOLD GIS Data for Nationwide Horizontal Curves Identification

FHWA
This research creates the first complete interstate curve inventory data that identified over 60,000 curves spanning a total 32,000 miles across all 50 states using the automated All Road Network of Linear Referenced Data (ARNOLD) dataset and Geographic Information System (GIS) methodology.

Orange Blossom Trail Pedestrian Safety Improvements

Florida
An $8.7m pedestrian safety project along 1.1 mi of a six-lane arterial in Orlando. Upgrades included raised mid-block crossings, pedestrian hybrid beacons, in-pavement lights, lighting, median fencing, and realigning bus stops with the crosswalks. Only one pedestrian fatality in the four years since completion.

Innovative Rail Crossing and Intersection Safety Improvement

Florida
A highly innovative design utilizing a pear-shaped roundabout to replace three traffic signals and seven rail-gated crossing lanes in a physically constrained area. This $9.5m project located in a community with high numbers of below-poverty residents also added improved pedestrian facilities.