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Front Brake Lights Could Drastically Diminish Road Accident Rates
(bioengineer.org)
This is a most excellent place for technology news and articles.
< and > for turns. X for brakes.
Honestly, we should focus on functionality rather than aesthetic.
That doesn't answer the question. The question is how you would design it so you can look at the left side of a car, know that it's turning right and isn't prone to misunderstandings.
Up and down arrows? Up is away from you and down is towards you.