There is always potential danger when people fail to obey traffic lights. I had a near miss this morning on the way to catch the train I am on now.
There are many signs in life too. Every single day "lights" flash and tell us what we should stop doing, start doing something different, better, or more uniquely, or stay doing what we are.
What lights are flashing for you? Are you paying attention and taking action?
Be the difference you want to see in the world.