Interpretation ID: nht72-5.29

DATE: 08/21/72

FROM: AUTHOR UNAVAILABLE; Lawrence R. Schneider; NHTSA

TO: Oshkosh Truck Corporation

TITLE: FMVSR INTERPRETATION

TEXT: This is in response to your letter of July 5, 1972, requesting an opinion as to how manufacturers may take into account a vehicle's speed capability in establishing GAWR.

The Certification regulations do not specify particular speed criteria for establishing weight ratings. As a minimum, however, we believe the speed chosen should reflect the maximum speed at which it is reasonable to expect the vehicle to be driven. In the case where a vehicle is subject to some low-speed uses, such as seasonal use as a snow plow, we believe the figure on the certification label should be based on that use of the vehicle in which its expected speed is greatest. The regulations do not provide for variable ratings based on speed.

Finally, you ask whether cautionary labels dealing with GAWR and GVWR figures may be installed in the cab. The NHTSA does not object to the use of such labels. They may be used, as appropriate, to indicate permissable use of higher loads in low-speed applications.