traffic signal

Today I watched a traffic signal flicker erratically. Not the steady flashing of a signal which knows it's malfunctioning, but a frenetic malfunctioning sort of flicker--at first it was red, flashing on and off at random, like it was trying to flash but didn't know how. Then it turned green. The green seemed more steady, but every few seconds or so it turned red, for just a fraction of a second. Like it wasn't sure. Like it was getting mixed signals from whatever controls it.

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