According to the FHA, here’s what drivers need to know: At a solid yellow left-turn arrow, drivers still have the right of way, but the light is about to turn red. At a flashing yellow left-turn ...

That camera caught Oseguera at a "no turn on red" at U.S. Route 30 and Illinois Route 83. There is a green right turn arrow. "I'm just getting ready to make the turn and the light turned yellow ...

Some states, like Michigan, solved it with a flashing red circle. In others it was a flashing yellow circle. Testing in simulators and driving labs eventually settled on the flashing yellow arrow.

then a solid yellow arrow to warn that the signal is about to turn to a red arrow. An added flashing yellow signal follows the red arrow signal to allow a driver an additional chance to turn left ...