Interpretation ID: aiam1101
Esq.
General Counsel
ADC Marketing
Inc.
4410 Executive West
Fort Wayne
IN 46808;
Dear Mr. Sisler: This is in reply to your letter of March 29, 1973, to Mr. Schneide asking for a clarification that the Front Brake Light Adapter you describe 'does not fall within the provisions of Motor Vehicle Safety Standard No. 108.' The adapter, as we understand it, connects the stop lamps with the front turn signal lamps so that when the brakes are applied, the front turn signal lamps are activated in a steady-burning state, indicating that the vehicle is decelerating or has come to a halt.; In our opinion, use of the adapter as original equipment on a vehicl might be precluded by paragraph S4.1.3 of Standard No. 108 prohibiting devices that impair the effectiveness of the equipment required by the standard. The front turn signal lamp is a lamp that flashes in operation to indicate to oncoming drivers, or pedestrians, that the vehicle is preparing to turn, or that a potential hazard exists ahead (when the system is activated as a hazard warning system). Accordingly, when the brake pedal is applied, if the adapter overrides the flashing effect of the front signal lamps it would impair their effectiveness, and be prohibited by Standard No. 108.; The adapter would be permissible as original equipment, however provided that the signals still flash when the brakes are applied, but a State would not be preempted from regulating it. Nothing in the standard precludes aftermarket sale of the adapter, but its use also would be subject to regulation by the individual States.; Yours truly, Richard B. Dyson, Assistant Chief Counsel