Interpretation ID: 17683.ztv

Mr. Nick Tysoe
Rolls-Royce Motor Cars Ltd.
Crewe
Cheshire CW1 3PL
England

Dear Mr. Tysoe:

This is in reply to your fax of March 24, 1998, asking for an interpretation of S7.8.5 of Federal Motor Vehicle Safety Standard No. 108.

Rolls-Royce is considering a four-lamp headlighting system in which the upper and lower beams would be provided by separate headlamps. You ask if it would be permissible for the lower beam headlamps to be visually/optically aimable and the upper beam headlamps to be mechanically aimable by external means.

This is not permissible under Standard No. 108. We interpret Standard No. 108 as requiring identical headlighting systems on both sides of a new vehicle, including their aiming features. I enclose a copy of a letter dated March 10, 1998, that this Office sent to Herr Spingler of Robert Bosch GmbH which explains the agency's views.

Sincerely,
Frank Seales, Jr.
Chief Counsel
Enclosure
ref:108
d.6/19/98