US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter III — FEDERAL MOTOR CARRIER SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATIONPart 392 — DRIVING OF COMMERCIAL MOTOR VEHICLESSubpart C — Stopped Commercial Motor Vehicles392.2449 C.F.R. § 392.24Emergency signals; flame-producing.Last amended: 2016Year: 2026Length: 41 wordsOfficial source Cite as 49 C.F.R. § 392.24 (2026)No driver shall attach or permit any person to attach a lighted fusee or other flame-producing emergency signal to any part of a commercial motor vehicle. [33 FR 19732, Dec. 25, 1968, as amended at 60 FR 38747, July 28, 1995]Previous49 C.F.R. § 392.22