NGSIM Resources

Downloads and Public Materials

Public links, source-code repositories, technical references, and selected NGSIM product materials. Restricted software files and sensitive materials are distributed through the protected portal after manual approval.

Public Materials

This page is organized as a public resource center. It links to public repositories, federal technical briefs, product announcements, and selected media references. Installers, example files, internal reports, and restricted technical materials should be placed behind the portal.

ETFOMM

Source Code and Release Notes

ETFOMM GitHub Repository

ETFOMM source code and release materials are hosted in the public GitHub repository. The repository includes ETFOMM 2.1 and ETFOMM 2.2 materials.

Open ETFOMM on GitHub

2025 Release

ETFOMM Joins TSIS-CORSIM

In 2025, ETFOMM joined TSIS-CORSIM for worldwide release through the McTrans Center at the University of Florida.

Read McTrans Announcement

FHWA Reference

ETFOMM Technical Brief

FHWA-HRT-17-028 describes ETFOMM and the ETFOMM Cloud Service concept as an open-source microscopic traffic simulation approach.

Browser Version  |  PDF

Documentation note: ETFOMM 2.2 does not currently have a separate standalone documentation package. Public documentation and technical notes will be added here as approved materials become available.

SSAM 3.0

Source Code and Documentation

SSAM3 GitHub Repository

The public SSAM3 repository provides source code, executable folders, installation materials, and documentation for the SSAM 3.0 project.

Open SSAM3 on GitHub

FHWA Reference

SSAM 3.0 Technical Brief

FHWA-HRT-17-027 documents the 2017 enhancement and update of the open-source Surrogate Safety Assessment Model, including SSAM Version 3.0.

Browser Version  |  PDF

FHWA Software Page

Surrogate Safety Assessment Model

FHWA describes SSAM as a software application for identifying, classifying, and evaluating traffic conflicts from microscopic-simulation trajectory files.

Open FHWA SSAM Page

RideKey and SBIR Materials

SBIR Portfolio

NGSIM SBIR Award Portfolio

SBIR.gov provides a public portfolio of New Global Systems awards, including rural shared-mobility research and development activities.

Open SBIR Portfolio

Kentucky Matching Funds

SBIR/STTR Matching Fund Announcement

Kentucky public announcements and KSTC startup news provide additional context for NGSIM's rural shared mobility research and commercialization activities.

Kentucky Announcement  |  KSTC Article

News and Media Archive

The following uploaded media files are included for internal website review. Before publishing copyrighted newspaper or magazine PDFs as direct downloads, NGSIM should confirm that it has permission to redistribute them. When possible, link to the publisher's public article page instead.

Protected Materials

Protected Software and Technical Files

Restricted installers, example networks, technical notes, internal reports, and beta materials should be placed in the protected portal rather than linked directly from public pages.

Register for Portal Access

Future Download Tracking

The protected portal now uses a MySQL 8 account-based workflow with email verification, manual approval, user accounts, login logs, and future download tracking.