Using an Arduino Board connected with 3 LED lights which would server to demo the traffic light. The board would have a wireless receiver like Bluetooth. creating a simple Android app which asks for a password and switches the direction.

Security – The security problem is solved is by using a password authentication on the traffic light. Surprise – The sudden change in traffic light can cause great confusion and accidents for the unsuspecting drivers. The solution is alert everyone that an emergency situation is in progress. This can be done by blinking the yellow lights for 4-5 seconds.