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

Performance of Prototype No. 20 Frogs in Revenue Service

Document Series
Research Results
Author
Federal Railroad Administration
Report Number
RR 22-17
Office
RPD-31
Subject Track
Keywords
Special trackwork, turnout frogs, frog point, frog wing, HAL

Transportation Technology Center, Inc. (TTCI) evaluated the performance of several No. 20 fixed-point frogs on Norfolk Southern Railway (NS) in Kentucky. This effort was part of the Heavy Axle Load (HAL) Revenue Service Test Program jointly supported by the Federal Railroad Administration (FRA) and Association of American Railroads (AAR). Research was conducted between 2017 and 2022.  


Last updated: Friday, September 9, 2022