Case Study Tag: Context

A Unified Framework for Safe System Implementation

California

Caltrans developed a safe system framework that adds hierarchy to strategies and incorporates context into decision-making.

AASHTO Safety Summit Poster 2025

FDOT’s Application of Target Speed

Florida

FDOT developed a context classification guide for roadway design. Target speeds are determined by many data points, by context classification and for the safe mobility of all users.

AASHTO Safety Summit Poster 2025 Context Classification Guide Smart Growth America Article

Context-Sensitive Speed Limit Setting

Delaware

DelDOT combats rising traffic fatalities by adopting context-sensitive speed limits, partnering with local agencies, and moving beyond the 85th percentile method.

TZD DelDot Case Study

National Complete Streets Assessment

FHWA

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.

FHWA At-A-Glance Report 2023 Safety Summit Poster

Route 101 Safety Improvements

New Hampshire

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.

ACEC-NH Award Project Website Local News Article 2024 Safety Summit Poster

How SS4A can Keep Effingham County Residents Safe

Georgia

The Effingham County's Safety Action Plan, created with Safe Streets for All (SS4A) funding, is based on data analysis, public input, and stakeholder meetings.The plan highlights prioritized areas for improvement, and aims to reduce fatal crashes to zero.

Safety Action Plan Resolution 2024 Safety Summit Poster

Access Management Study – FM 1488

Texas

The Texas Department of Transportation (TxDOT) studied access management to improve safety on a four-lane roadway in a growing area

Study Summary Report