Interpretation ID: nht74-1.11

DATE: JANUARY 23, 1974

FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA

TO: Correct Manufacturing Corporation

TITLE: FMVSS INTERPRETATION

TEXT: This is in response to your letter of January 14, 1974, asking about the category into which a Divco truck would fall and the applicability of Motor Vehicle Safety Standards 121 (Air Brake Systems) and 105a (Hydraulic Brake Systems) to them.

The vehicles you have described are "trucks" for purposes of the safety standards. The applicability of the braking standards is simple: trucks equipped with air brakes must conform to Standard 121 and those equipped with hydraulic brakes must conform to Standard 105c.

I enclose a sheet telling you how to obtain copies of the motor vehicle safety standards and regulations.

Enclosure