The FAST Act requires the Secretary to promulgate regulations requiring each railroad carrier that provides regularly scheduled intercity rail passenger or commuter rail passenger transportation to the public to install inward- and outward-facing image recording devices in all controlling locomotives of passenger trains. This rulemaking would require the installation of inward- and outward-facing locomotive video cameras on controlling locomotives of passenger trains. The recordings would be used to help determine the cause of railroad accidents and to prevent similar accidents. They would also be used to ensure passenger railroad employee compliance with applicable Federal railroad safety regulations and railroad rules, particularly regulations prohibiting the use of personal electronic devices. This rulemaking attempts to fulfill NTSB recommendations urging FRA to adopt regulations requiring locomotive-mounted audio and video recording devices. FRA is requesting comments regarding whether audio recording devices should be required.