Interesting, would seem more efficient to comply with as many laws as possible that don't clash and have one configuration, only tweaking for local oddities.

I have a complaint about Tesla on this one. In Europe they ship vastly better tail lights with a different color for turn signals. As I understand, the superior signals are acceptable, though not preferred, by US standards. But Tesla makes a separate, different, worse part to use in the US, rather than giving us the good stuff also and reducing their manufacturing variation.

As an European I always wondered about why in the US they have red turn signals. It seems...odd, so to speak?

Suburban and Americans aren't so good at living with the level of aggression that city driving requires, and so prefer having clearly delineated left turn time to something perceived as fighting in traffic.

It’s cheaper (or was) - early cars had one red light on each side and could blink it for a turn signal, but it was also the brake.

Later a second light was added for the taillight but they did it in the same bulb.

Thanks for the explanation! It still seems odd to me that it hasn't been regulated somehow, having 2 different colors for 2 different actions is safer.

It's a pattern for Hyundai/Kia. The whole thing with "no anti-theft immobilizers" is only where it's not mandated.

Their business is shaving pennies, hence why they didn't install immobilizers in states that didn't require them, in order to save a few bucks per car.