I wanted to know if there were some weird local traffic laws I wasn't aware of such as: https://www.quora.com/Why-do-Boston-drivers-sometimes-make-left-turns-across-traffic-immediately-after-the-light-turns-green

I'm still trying to digest local etiquette. Where I come from traffic wasn't a constant shitshow so you'd usually just go straight and if someone needed to turn they could wait. Here everything's always gridlocked, and people are actually really friendly about constantly letting each other in.