Originally Posted by diablito
is yellow light illegal?
best thing is ask your local police dept. I am not sure if they are in your area.
That would not be a local regulation, but FMVSS Standard 108 http://fmvss108.tripod.com/fmvss108text.htm
, which vehicles in all states must comply with and which references for lamp color:
"S5.1.5 The color in all lamps, reflective devices, and associated equipment to which this standard applies shall comply with SAE Standard
J578c, Color Specification for Electric Signal Lighting Devices, February 1977."
I also found this legal interpretation on headlamp color, written it 2000: http://www.nhtsa.dot.gov/cars/rules/...21118.ztv.html
I have not had the fortitude to wade through all the governemntal mumbo-jumbo, but it appears yellow was acceptable for headlamps at one time, but may or may not be now.