Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The latest general information on the Coronavirus Disease 2019 (COVID-19) is available on the CDC website.

United States Department of Transportation United States Department of Transportation

Broken Rail and Rollout Detection to Support QMB Operations

Document Series
Research Results
Author
Federal Railroad Administration
Report Number
RR 21-21
Office
RPD-33
Subject Positive Train Control
Keywords
Quasi-Moving Block (QMB), next generation track circuit, NGTC, track circuit enhancements

Transportation Technology Center, Inc. (TTCI) collaborated with a railroad advisory group to progress a track circuit concept that supports the Quasi-Moving Block (QMB) method of train control. TTCI performed proof-of-concept testing, capacity analysis, hazard analysis, and requirements development.


Last updated: Tuesday, September 28, 2021