For the old permissive left turn signal.

For so many years, the permissive left turn gave drivers the protection of a left turn signal without having to stop at a red arrow, but it was also a victim of its own success. How do you know when the opposing traffic has a red if you're stuck in the intersection (why?)?

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This is called the Yellow trap. You decided to inch up into the intersection, waiting for your chance to turn left when all of a sudden, your light turns yellow. Realizing (on a misguided half-truth) that your chance was coming to an end, you decide to go for it - only to see that the opposing traffic has a green light and BAM! You've been T-boned by an old lady in a Civic.

If anything, it's time to put this style of signal to pasture.