Interpretation ID: nht71-4.4

DATE: 08/16/71

FROM: AUTHOR UNAVAILABLE; L. R. Schneider; NHTSA

TO: Truck Equipment & Body Distributor Association

TITLE: FMVSS INTERPRETATION

TEXT: This is in reply to your letter of July 28 requesting a clarification of paragraph S4.3.1.1 of Standard No. 108. This paragraph requires the installation of auxiliary lighting equipment, if the required lighting equipment is prevented from conforming to photometric output and visibility values by motor vehicle equipment such as snow plows, street sweepers, etc. You ask, in essence, whether auxiliary lamps must be provided in two situations: when the motor vehicle equipment is sold with but not attached to the vehicle, and when no equipment is sold with the vehicle but the vehicle is equipped with a hoist upon which equipment may be mounted.

With respect to the first situation, compliance should be determined with the equipment attached which(Illegible Word) the vehicle at the time it is sold. As for the second situation, compliance of a vehicle which is equipped at time of sale with hoists or mounting brackes only, and for which equipment will be provided at a time subsequent to sale, should be determined with the vehicle in its as-sold condition.