An official website of the United States government
Official websites use .gov A .gov website belongs to an official government organization in the United States.
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. Railroad operations are undergoing rapid changes involving the introduction of new technologies such as positive train control (PTC), energy management systems (EMS), and electronically controlled pneumatic (ECP) brakes in the locomotive cab. To help ensure these and other new technologies...