Having red lights transition to yellow before switching to green is such an obvious optimization, I don't know why every country hasn't adopted it as the standard.
Seems like it could cause confusion in certain situations if yellow precedes both the stop and the go
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It doesn’t. The other light turns red before.
OK, so there's one light that changes color, you're at a sidestreet intersection with a stop sign, turn right, and see a yellow light. Do you assume turning red or green next?
