§393.19. Hazard warning signals.
49 C.F.R. § 393.19
The hazard warning signal operating unit on each commercial motor vehicle shall operate independently of the ignition or equivalent switch, and when activated, cause all turn signals required by § 393.11 to flash simultaneously.
Notes, amendments, and revision history
Amendments
[70 FR 48046, Aug. 15, 2005]
Authority
Authority: 49 U.S.C. 31136, 31151, 31502; sec. 1041(b), Pub. L. 102-240, 105 Stat. 1914, 1993; secs. 5301 and 5524, Pub. L. 114-94, 129 Stat. 1312, 1543, 1560; and 49 CFR 1.87.
Source
Source: 33 FR 19735, Dec. 25, 1968, unless otherwise noted.
Amendments
[70 FR 48046, Aug. 15, 2005]