Interpretation ID: nht90-3.38

TYPE: Interpretation-NHTSA

DATE: August 1, 1990

FROM: Carol Zeitlow -- Manager, Engineering Services, Oshkosh Truck Corporation

TO: Taylor Vincon -- Legal Counsel, NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 8-27-90 to C. Zeitlow from P. J. Rice; (A36; Std. 108); also attached to photocopies of Federal Register (text omitted)

TEXT:

I spoke with Kevin Cavey last week regarding section 108 of the FMVSS. He suggested I write to you for clarification of the following issue:

When a hazard warning light (four-way flasher) and a rear stop light are together on a vehicle, which should be the over-riding feature?

Per Mr. Cavey, the hazard warning light should always over-ride the rear stop light.

If this is correct, will you please confirm this fact in writing? If this is not correct, will you please direct us to the section of the regulation which would explain the proper installation procedure? Also, if the stop lights were to override the fl ashers, should the front flashers be steady burning or flashing?

We have also noticed that in Paragraph S5.3.1.7 of Section SlO8-10, page SS-210, only SAE Standard J588e is referenced, J1395 is not shown. Will this section be updated to reflect the SAE change?

Thank you. I will await your reply.