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FHWA Home / Safety / Roadway Safety Data Program (RSDP)

Data-Driven Safety Analysis Resources


Jerry Roche
FHWA Office of Safety
(515) 233-7323

John McFadden
FHWA Resource Center
(410) 962-0982


Fact Sheet

EDC-4 Data-Driven Safety Analysis (DDSA)

Library Directory

Case Studies
DDSA How-To Guides
DDSA Toolbox
Training and Technical Assistance

Case Studies

Minnesota Case Study (interactive): Systemic Analysis helps Minnesota target investments on local roads

New Jersey Case Study (interactive): New Jersey uses predictive analysis to fund modern roundabout

Systemic Planning Process Benefits Missouri Pavement Project

Minnesota’s Systemic Approach Integrates Safety Performance into Investment Decisions for Local Roads

Louisiana Integrated Quantified Safety Performance into Design Decision on New Highway

Predictive Safety Analysis Aids in Selection of New Design for an Outdated Interchange in Ohio

DDSA How-To Guides

FHWA has developed a series of instructional guides illustrating how Data-Driven Safety Analysis can be incorporated and applied in common transportation tasks and processes, with the goal of helping agencies assess future safety performance and make more-informed decisions.

Incorporating DDSA into Traffic Impact Analyses

Incorporating DDSA in Road Diets

Incorporating DDSA in Intersection Analysis through the use of Intersection Control Evaluation

DDSA Toolbox

The following are examples of tools* agencies can use to apply predictive and systemic approaches.

Predictive Analysis Toolbox

AASHTO Highway Safety Manual

AASHTOWare Safety Analysis software

Agile Assets Safety Analysis software

Crash Modification Factors Clearinghouse

FHWA Interactive Highway Safety Design Model


OnSafety Portal

SPF Tool

Spreadsheet Tools, including the Enhanced Interchange Safety Analysis Tool (ISATe)

Systemic Analysis Toolbox

FHWA Systemic Safety Project Selection Tool

Roadway Safety Foundation United States Road Assessment Program (usRAP) software

*Disclaimer: FHWA cites specific tools as examples, not as an endorsement of these tools over others.


Local Road Safety Plans Infographic

DDSA Project Development Infographic

Systemic Analysis Infographic

Training and Technical Assistance

FREE training and technical assistance is available for State DOTs and their transportation partners. For more information, please contact Jerry Roche or John McFadden.


Determining the Appropriate Level of Safety Analysis for a Project (06/17)

Incorporating the Highway Safety Manual into Your Policies and Procedures (02/17)

Reliability of Safety Management Methods (12/16)

SPF Calibration and Evaluation (11/16)

The New Interactive Highway Safety Design Model (IHSDM) 2016 Release (10/16)

Introduction to DDSA (09/16)

SPF Calibration and Development (07/16)

Using Advanced Safety Analysis Techniques for Network Screening (05/16)

Office Hours (04/16)

Systemic Safety Analysis Approaches with Limited Roadway Data (03/16)

Integrating Safety Performance into All Projects (02/16)

Safety Analysis of Freeways and Interchanges (01/16)

EDC Exchange (06/15)


Local Road Safety Plan (07/18)

A New Approach to Safety Analysis – Washington DOT (06/17)

DDSA Case Study – Washington (06/17)

DDSA in Project Development Process (06/17)

DDSA in Safety Management Process (06/17)

Innovation Spotlight (06/17)

DDSA Case Study – High Level Overview (04/16)

DDSA Case Study – Minnesota (10/16)

DDSA Case Study – New Jersey (08/16)

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