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FHWA Home / Safety / HSIP / Recording Devices for Interconnected Grade Crossing and Intersection Signal System

Recording Devices for Interconnected Grade Crossing and Intersection Signal Systems: An Informational Report

FHWA Safety Program

FHWA-SA-12-020

October 12, 2012

U.S. Department of Transportation Federal Highway Administration

Safe Roads for a Safer Future. Investment in roadway safety saves lives.
http://safety.fhwa.dot.gov

Cover: Recording Devices for Interconnected Grade Crossing and Intersection Signal Systems: An Informational Report Left Photo: Vehicles traveling through a highway-rail grade crossing equipped with active railroad warning devices and interconnected with a preempted traffic signal. Top Right Photo: Railroad preemption input wiring board. Bottom Right Photo: NEMA TS-1 highway traffic signal cabinet assembly.

Downloadable Version
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Quality Assurance Statement

This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the data published herein. The contents do not necessarily reflect the official view or policies of the Federal Highway Administration (FHWA). The U.S. Government assumes no liability for the use of the information contained in this document. This report does not constitute a standard, specification, or regulation.

Notice

The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective of the document.

Quality Assurance Statemen

The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement.

 

Acronyms

Term Definition
AHWS Automatic Highway Warning System
AREMA American Railway Engineering and Maintenance-of-Way Association
ATC Advanced Transportation Controller
CFR Code of Federal Regulations
DIR Direction of Train
FHWA Federal Highway Administration
FRA Federal Railroad Administration
HRI Highway Railroad Intersection
ICO Island Circuit Occupied
IEEE Institute of Electrical and Electronics Engineers
IMSA International Municipal Signal Association
LTI Long Term Obstacle Indicator
MUTCD Manual on Uniform Traffic Control Devices
NEMA National Electrical Manufacturers Association
NGD Entrance Gate Down
NGP Entrance Gate Present
NGU Entrance Gate Up
NTSB National Transportation Safety Board
PEA Preemption Warning Active
PER Preemption Relay
PSP Product Safety Plan
RSO Roadway System Operational
RSPP Railroad Safety Program Plan
SO System Operational (railroad)
TPD Train Presence Detection
USDOT United States Department of Transportation
VAS Vehicle Arrestor Barrier Status
VP Vehicle Presence
WSA Warning System Active
XGD Exit Gate Down
XGP Exit Gate Present
XGU Exit Gate Up
XR Grade Crossing Relay

Table of Contents

Technical Documentation Page

List of Figures

List of Tables

Page last modified on October 15, 2014.
Safe Roads for a Safer Future - Investment in roadway safety saves lives
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000