Q2bman
Member
ERM said:The relevant section of FMVSS No. 108 reads as follows:
S5.5.10 The wiring requirements for lighting equipment in use are:
(a) Turn signal lamps, hazard warning signal lamps, and school bus warning lamps shall be wired to flash;
(
B) Headlamps and side marker lamps may be wired to flash for signaling purposes;
© A motorcycle headlamp may be wired to allow either its upper beam or its lower beam, but not both, to modulate from a higher intensity to a lower intensity in accordance with section S5.6;
(d) All other lamps shall be wired to be steady-burning.
Just because someone does it, doesn't make it legal. Law is law. Unless that changes, they are wrong.
I don't see anything saying you can't glad the 3rd brake light. And if you interperet this the wrong way, you can't even use traffic backers. Doesn't state you can flash the brakes either. Im not so sure this is meant for emergency vehicles. More for passenger vehicles. Anyway, I'm not arguing. Louis said his brake light overpowers the haws so that sound prudent.