• At a cross walk, the duration of a traffic light is the following.
  the red hand - 60 seconds
  the person - 20 seconds
  the blinking hand - 10 seconds
  
• Our observation shows that the number of pedestrians' violating the red light depends on the car traffic.
• Some facts about LED's (source: (http://www.thermosolar.it/eng/photovoltaics/traffic2.htm)
  • Unlike the traditional light bulbs, they give uniform brightness.
  • It takes twice as much time to lose their brightness.
  • When the light bulbs are damaged, the cross-light gets switched off or goes into blinking mode. However, each color of the LEDs is kept by many diodes LED
  • The maintenance cost and energy cost are both significantly lower.