Led light question

I believe it's 50 percent

 

You're not allowed to have a percentage burnt out, rather as you're supposed to have at-least two.

"Any semitrailer or full trailer manufactured on or after March 1, 1979, shall be equipped with [sic] at-least two rear side-marker lamps at a height of not less than 381 mm (15 inches), and on the rear of trailers not more than 1,524 mm (60 inches) above the road surface, as measured from the center of the lamp on the vehicle at curb weight. "

If Johny law gives you any problems, just refer him to § 393.11Lamps and reflective devices., sub-part B, footnote 4. of his little black handbook and send him along his way. Make sure not to issue him a ticket for wasting your time.:smt075

 

I spent over 30 minutes looking this one up. I'm unable to post code number for this.


You would only need one LED (in each lamp) if it was visible from 300 in sunlight. Did you bring your yard stick?

 

I carry a 100ft tape right next to my driver's seat all the time.

 

Used to be......any light that was mounted to the truck had to be working. You might only need 2 taillites, but if there are 4 mounted there, all 4 had to work.

 

Replace them. Why take a chance? LED lamp technology has improved quite a bit the last several years. Replace them, take the deduction, and don't worry about it. Yes, I know they're expensive but if cost is an issue then put in filament lamps ... didn't think so.

Eventually you'll run a cross a Barney Fife who will say "50%" of the lamps or not burning in the rear of your tractor and it will be very subjective until regulations are written to cover LED lamps with multiple LED's. I did a cursory search and couldn't find anything dealing with LED lamps on CMV's.

 

§ 393.11Lamps and reflective devices., sub-part B, footnote 4.

EDIT-This covers LED's since they're color dictates them as a "lamp"

 

I think he's more worried about how many led bulbs in a single housing can be dead before DOT considers the lamp to be out of service.