i am doing arduino based Traffic signal controller, so the project is that when an emergency vehicle(carrying arduino connected with rf trasmitter) approaches to the intersection, the traffic signal light will turn into red( of course with arduino connected with rf receiver). i tried this code from the virtualwire library but everytime i load the code and run it, the receiver side traffic light keeps working even if rf transmitter is on. so please guys help me out this,,,,,my project due is 2 weeks....im totally horrified