What does a traffic light indicate with a black arrow on a solid yellow light ? .
Nothing, because the black arrow can only be on a flashing yellow background .
That vehicles that intend to advance in the direction of the arrow may do so, but with caution .
That vehicles moving in the direction of the arrow must stop, as if it were a red light, unless, when it is turned on, the vehicle is so close to the place of arrest that it cannot stop before it in sufficient security conditions .
Correct answer :c
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