Interpretation ID: nht74-5.27

DATE: 03/18/74

FROM: AUTHOR UNAVAILABLE; RICHARD B. DYSON; NHTSA

TO: MARUKA MACHINERY CORP. OF AMAERICA

TITLE: FMVSR INTERPRETATION

TEXT: This is in response to your letter of February 22, 1974, requesting information concerning three-wheel and light duty four-wheel vehicles.

As of January 1, 1974, motor vehicles of 1,000 pounds or less curb weight, other than trailers and motorcycles, became subject to Federal motor vehicle safety standards.

Currently, motorcycles are motor vehicles with motive power having a seat or saddle for the use of the rider and designed to travel on not more than three wheels in contact with the ground. Any three-wheel vehicles that conform to this definition must meet all standards applicable to motorcycles. Those three-wheel vehicles that differ in some respect from the definition, must satisfy the requirements of either passenger car, truck, or multipurpose passenger vehicle standards, depending upon which are appropriate.

On November 27, 1973, the National Highway Traffic Safety Administration amended 49 CFR 571.3(b), Definitions, of the Federal motor vehicle safety standards, by revising the definition of "motorcycle" (Notice enclosed). Petitions have been received in response to the final rule and are receiving careful consideration as the agency contemplates a possible further revision of the definition.

With regard to lightweight four-wheel vehicles, as of January 1, 1974, they must comply with all standards applicable to their vehicle type. There is no special category for lightweight four-wheel vehicles.

YOURS TRULY,

February 22, 1974

Richard Dyson Assistant Chief Counsel National Highway Traffic Safety Administration

In reference to your letter of Oct. 16, 1973 your reference number N40-30(ZTY) I wish a little more information if possible.

I am not clear on the reference to the (three wheel) vehicles at this time. Would it be possible to obtain a copy of (38 FR 12818) in reference to a redefinition of "motorcycles" and what is now required of vehicles of three wheels.

I was under the opinion that your department was to define the three wheel vehicles and light four wheel vehicles (1100 to 1200 curb weight) to a separate classification. Am I correct or not in this matter?

Any information in reference to three wheel and light duty four wheel vehicles you may have as to safety requirements required for 1974 will be appreciated very much. I am very interested in this field of vehicles.

Thank you for your efforts. Please send the information to my office in South Carolina.

Grayson Conway