In Mexico, we have a four phase signal: green, flashing green, yellow, and red. I believe this is far superior to the green, yellow, red, because when I see the yellow I always go into a near panic: Do I have time to cross the intersection or do I stop now? With the extra warning time (flashing green) it seems like I have an infinite amount of extra time to decide.
How we do it here @ the 24 second mark:
Someone is trying to propose extending the yellow phase in the United States. This still would cause almost the same problem in deciding what to do now. The four-phase signal I believe is far superior and I scratch my head every day asking myself why the United States has not caught on to such a great safety idea.
