49 C.F.R. § 229.13 Control of locomotives.
Title 49 - Transportation
Except when a locomotive is moved in accordance with §229.9, whenever two or more locomotives are coupled in remote or multiple control, the propulsion system, the sanders, and the power brake system of each locomotive shall respond to control from the cab of the controlling locomotive. If a dynamic brake or regenerative brake system is in use, that portion of the system in use shall respond to control from the cab of the controlling locomotive.
Title 49: Transportation
PART 229—RAILROAD LOCOMOTIVE SAFETY STANDARDS
Subpart A—General
§ 229.13 Control of locomotives.
