Interpretation ID: nht92-4.35

DATE: August 17, 1992

FROM: Spencer A. Darby -- Vice President - Engineering, Sate-lite Mfg. Co.

TO: Legal Counsel - FMVSS 125 -- NHTSA

COPYEE: Larry Michelson

TITLE: None

ATTACHMT: Attached to letter dated 10/28/92 from Paul Jackson Rice to Spencer A. Darby (A40; Std. 125)

TEXT:

IN THE "S1. SCOPE" AND "S3. APPLICATION" SECTIONS OF FMVSS 125, REFERENCE IS MADE TO "...DEVICES, WITHOUT SELF-CONTAINED ENERGY SOURCES,...".

I AM RESPECTFULLY REQUESTING AN AGENCY INTERPRETATION OF THIS PHRASEOLOGY IN REGARDS TO ONE PUTTING FLASHING, BATTERY OPERATED LIGHT SOURCES BETWEEN THE REFLEX REFLECTORS PORTION OF AN OTHERWISE COMPLYING WARNING DEVICE. WOULD THIS ALTERED DEVICE BE IN COMPLIANCE WITH THE FMVSS 125 STANDARD IF THE LIGHT SOURCES WERE OPERATED AFTER DARK? OR, PHRASED ANOTHER WAY, DOES FMVSS 125 APPLY TO AN OTHERWISE COMPLYING DEVICE THAT HAS FLASHING LIGHTS IN IT, AND, IF NOT, WOULD A VEHICLE WHICH IS REQUIRED TO HAVE THE THREE 125 WARNING TRIANGLES HAVE TO HAVE THREE NON-LIGHTED COMPLYING TRIANGLES SET OUT AS WELL?

IT IS OUR OPINION THAT FLASHING LIGHTS IN AN OTHERWISE COMPLYING EMERGENCY WARNING TRIANGLE ENHANCES THE ATTENTION GRABBING CAPABILITY OF THE DEVICE AFTER DARK.

PLEASE FEEL FREE TO TELEPHONE THE WRITER AT ANY TIME, IF HE COULD BE OF FURTHER ASSISTANCE IN CLARIFYING THIS REQUEST FOR AN INTERPRETATION.