[AT] tractor hauler a pain to install headlights.

[Gilbert Schwartz]

While we are talking about vehicle lights, please, someone explain to me why or how anyone would want to have lights on the front of their vehicle with no lights on the rear. It appears that this condition is industrywide and seems to be always in the "AUTO" mode on the headlight switch. I would think a driver would want lights on both ends of his vehicle at any time front lights are on. I am fully aware that brake lights are in a different category. I also know that any driver has more danger coming up from his rear, uncontrollable danger that is. Anyone who don't believe that should talk to a pursuit pilot.
I know there are many different opinions on this. I am just looking for a good sound reasoning.
> On January 19, 2020 at 7:29 PM James Peck <jamesgpeck at hotmail.com> wrote:
> 
> 
> This headlight alignment equipment site mentions state inspection facilities. I remember them.
> 
> http://lujanusa.com/sniper/sniper_detail.htm
> 
> Ken Knierim AT List Member (ken.knierim at gmail.com); <snip> I also spent a fair amount of time aligning the lights better than they ever were with the old halogen and incandescent lamps (of which were dubious quality on a good day). I purchased a cheapo light meter for the project as well (Urceri MT-912) and will see if it's calibrated enough to verify light standards at the distances in the document. <snip> 
> 
> Steve W. AT List Member and Sun machine owner (swilliams268 at frontier.com); Federal laws cover the lighting and states that any lamps other than the OEM approved light source are illegal. None of the LED retrofits are legal for highway use in the US. Doesn't matter what the packaging says.That is part of the standard that says each lamp housing must be designed around a particular light source. IE you make a reflector that uses a halogen lamp, that is the only legal replacement lamp for that housing.
> 
> The states generally don't enforce it though, however if you were to drive past a cop and your lights blind them, you will get cited. Then they may take a closer look.
> 
> This is the full code. If you want to know the federal stance on it.
> https://www.ecfr.gov/cgi-bin/text-idx?node=se49.6.571_1108
> 
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