49 CFR 220.39 : Transportation (§ 1.1 To Parts 1581-1699) — (§ 200.1 To Parts 273-299) — Other Regulations Relating To Transportation (Continued) (§ 200.1 To Parts 273-299) — Federal Railroad Administration, Department Of Transportation (§ 200.1 To Parts 273-299) — Railroad Communications (§ 220.1 To Appendix C To Part 220) — Radio And Wireless Communication Procedures (§ 220.21 To § 220.61) — Continuous radio monitoring.

4 Aug 2016

Each radio used in a railroad operation shall be turned on to the appropriate channel as designated in § 220.23 and adjusted to receive communications.

49 CFR 220.39