A play stoplight and railroad crossing lights for kids to use when playing cars & trucks. The app has two modes: an "auto" mode where the light changes after a period of time (like a real traffic light) and another mode where you can touch the light to make it change. Double-Tap the light again for a flashing red or yellow light. The auto mode has a slider bar to adjust the length of each light; your settings are stored for the next time you run the app, press and hold on the black to switch to settings and between the railroad lights and stoplights.