"Try Another Route" Traffic Light

In the morning, I am always running late on my way to work. There are several different routes that I can take , and I always pick the roads that appear to have the least amount of traffic and make turns whenever I can catch a green traffic light the most quickly. Unfortunately, I will sometimes be able to perfectly time a green light turn onto another road only to find that I am forced to stop for several minutes at a railroad crossing a little further down that road to wait for a train to roll through. If I had known that the train was coming before I made my turn, I could have continued down the road I was using and turned onto one of the many other roads that will lead me to my destination.

At intersections near railroads, It would be nice to have "railroad crossing indicator lights" on top of the traffic lights. These lights would activate as soon as the railroad crossing barriers and lights at the tracks go into action. As a result, drivers will know before they make a turn if they will get stuck waiting for a train and can choose alternate routes if possible. For safety reasons, these new lights could flash purple or white or some other color that is distinctly different from the standard green, yellow, and red of the traffic lights.