Yellow lights reveal who you are. Some slow down, some speed up. Both think they’re right.

Ambiguous moments show your defaults better than clear ones, because no rule applies and there is no time to build a justification. In the two seconds available you reveal whether you lean toward caution or toward pushing through, and either way it feels like the obviously sensible choice. That is the interesting part: both drivers experience themselves as reasonable. The instinct arrives first and recruits the reasoning afterwards.

Watch what you do in the next genuinely ambiguous situation. Ask whether that is the default you want, and remember the other person’s instinct felt just as correct to them.