Occasionally when you’re driving, you’ll make a mistake and perhaps need to adjust and it can create some awkward situations. Like today, my dad ended up in the wrong lane to go straight instead of turn at a light. He had to cut in line to make sure we could go the right way. It’d be nice if we could communicate “sorry, I screwed up. Excuse me. I just need to slip in there.”
Right now all we have for inter car communication is the horn, which has kind of an aggressive implication to it. This is for trying to de-escalate potential road rage.
If you actually want to be polite for real, the solution is to go around the block and do it the right way. A “sorry” horn won’t fix the notion of feeling entitled to make sudden unexpected (i.e. dangerous) moves in traffic to avoid inconveniencing yourself after you fuck up. At best it’ll just make you (unjustifiably) feel like a better person.