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.

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

Interoperable Employee-In-Charge Portable Remote Terminal (EIC PRT) Summary Report

Document Series
Technical Reports
Federal Railroad Administration
Report Number
Subject Communications, Train Control
Positive Train Control (PTC), Employee-in-Charge Portable Remote Terminal (EIC-PRT), work zone, electronic instructions

The Federal Railroad Administration (FRA) sponsored Transportation Technology Center, Inc. (TTCI) to define the requirements for Interoperable Employee-In-Charge (EIC) Portable Remote Terminal (PRT) functionality for use with Positive Train Control (PTC) systems. The Interoperable EIC-PRT is a safety overlay system that integrates with PTC to protect maintenance-of-way (MOW) workers by placing the entry of trains into work zones (WZ) under the control of the EIC. This research was conducted between 2016 and 2021. Collaborating with the North American railroad industry, the team developed systems engineering documents defining the EIC PRT system, including the interoperable requirements for the EIC PRT, EIC Server and Onboard segments. Additionally, the team developed a prototype Roadway Worker Terminal (RWT) application following the interoperable requirements and tested the application to demonstrate requirement compliance.

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: Thursday, February 15, 2024