Eli5 How two different car signals sync

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Ever notice when you’re behind two cars that have their turn signals on and while they’re currently blinking at alternating intervals, they always seem to sync up and blink at the same time before going back to alternating blinks. How?

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Anonymous 0 Comments

I think it’s because they are milliseconds off from each other, so at times they seem in sync until those milliseconds add up and they go off sync before back again.

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