Outside the VHF band, the railroads of North America use the frequency 457.9375 megahertz for transmissions from a train's end-of-train (EOT) device to the train's lead locomotive.
Most U. S. end-of-train devices transmit only. However, in Canada, the frequency 452.9375 megahertz is used to transmit from a train's lead locomotive to the end-of-train device. Use of two-way end-of-train devices is gaining popularity in the United States. Before the universal adoption of these EOT frequencies by the AAR, Norfolk Southern adopted its own EOT devices, which transmit on the frequency 161.115 megahertz
160.845 -- [AAR channel 49] -- Auto Train operations