Question about trailer directionals

Dot law.

If it’s on there, it has to work.

 

Thats a myth... Only the minimum required lights must function. I've looked it up before, could probably find it... but I don't feel like searching for it right now.

 

@Cattleman84 is right. They put a law in place a few years back to stop the abuses by states who used the "it's gotta work" bs to fatten their coffers.

 

Guess i haven’t looked that one up, but i’ve dealt with those “gotta work” officers in the past

 

Minimum required is three, one at the centerline and one on either side at least 6 inches and not more than 12 inches from the center light. See Table 1 in this.

eCFR :: 49 CFR 393.11 -- Lamps and reflective devices.

 

you have a book with all the regs in it, have you read it at all??