Interpretation ID: nht90-4.89

TYPE: Interpretation-NHTSA

DATE: December 21, 1990

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

TO: Taylor Vincon -- Legal Counsel, NHTSA

TITLE: None

ATTACHMT: Attached to letter dated 1-16-91 from Paul J. Rice to Carol Zeitlow (A37; Std. 101; Std. 104; Std. 108; Std. 201

TEXT:

As you may recall, I spoke with you on the phone regarding the following subjects. You had suggested I write you with my questions.

1. In my August 1st letter I asked the question, "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?". Your reply of August 27, 1990 stated that the hazard light shoul d always be over-riding. You also stated that you thought the regulations had previously stated either option was acceptable. If this is the case, when did the regulation change and in which section of the regulations can I find the ruling? Possibly, w e have had a misunderstanding since we have noticed that passenger cars are not all designed in this way. Your comments will be appreciated.

Additional questions I asked during an Oct. 9th phone conversation:

2. Question: Is a sun visor was required by FMVSS. Your answer was no.

3. Question: Are there any regulations regarding the type, or quantity of horns required on a vehicle? The answer you gave was no, only a horn was required.

4. Question: According to CFR 49, Section 571.104, there are no regulations regarding the percentage of area of the windshield that the windshield wiper must wipe, only the frequency of the wipers is egulated? You agreed.

Will you please confirm these answers in writing? Thank you.