Case Study Tag: evaluation

Kansas’ Drive to Zero

Kansas
Kansas DOT’s Drive to Zero initiative builds safety culture through collaboration and is supported by crash reports data analysis, reporting, and public dashboards.

A Collaborative Investigation of Truck Access into Roundabouts in Oregon

Oregon
Oregon DOT used field and simulation methods to understand and mitigate delays experienced by motor carriers in roundabouts, highlighting potential for improvements to better accommodate large vehicles.

AWSC at Low-Volume Unsignalized Intersections

Delaware
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.

Connection SATX Downtown Feasibility Study: Historical Safety Analysis

Texas
A historical safety analysis from the Connection SATX Downtown Feasibility Study helped develop short-term improvements for the study area by analyzing vehicular and vulnerable road user crashes to identify specific safety concerns. The safety analysis provided great insights on vehicular, pedestrian, and cyclist crash patterns in the study area.

High Friction Surface Treatment on Vertical Curves

West Virginia
HFST on vertical curves reduced wet weather crashes by 84%.

Crash Modification Factors for High-Tension Cable Median Barriers in Pennsylvania

Pennsylvania
High-tension cable median barriers reduced cross-median crashes by up to 83%.

Crash Modification Factors for High Friction Surface Treatments in Pennsylvania

Pennsylvania
High Friction Surface Treatments (HFST) reduced crash frequency by 30% to 76% at curves and intersections.

Installation of High-Tension Cable Barrier to Prevent Severe Cross Over Median Collisions

Oklahoma
High-tension cable barriers reduced cross-over median serious injury and fatality collisions significantly.

Statewide Deployment of Center Line Rumble Strips

Oklahoma
Centerline rumble strips reduced fatal and serious injury collisions by 18%.

Accelerating the Widespread Adoption of Roundabouts

Ohio
Accelerating roundabout adoption reduced total crashes by 33% and injury crashes by 71% at single-lane roundabouts.