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What difference, if any, is there between a warning device and a warning signal?

Document
FMCSA-VEH-393.51-Q05.cm_.docx (22.38 KB)

Section § 393.51: Warning signals, air pressure and vacuum gauges.

Guidance Q&A

Question 5: What difference, if any, is there between a warning device and a warning signal?

Guidance: For purposes of §393.51, the terms may be used interchangeably.

Regulatory Topic: What’s the difference between a warning device and a warning signal?
Effective Date: Sunday, May 4, 1997
Issued Date: Friday, April 4, 1997