USA Banner

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.

Site Notification

U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Positive Train Control Test Bed Interoperability Upgrades

Document Series
Research Results
Jared Withers and Richard Morgan
Report Number
RR 13-03
Subject Positive Train Control, Signal and Train Control
Positive Train Control (PTC), test bed, control points, Wayside Interface Units (WIUs), signal blocks, grade crossings, Interoperable Train Control (ITC)

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact
Last updated: Tuesday, February 5, 2013