Inherent Inter-vehicle Signaling Using Radio Frequency and Infra-red Communication

This paper suggests two alternative schemes to avoid the use of hydraulic and pneumatic horns responsible for severe sound pollution. Cost effective signaling systems using radio frequency (RF) and infra-red (IR) have been developed and working circuitry has been implemented to replace the conventional horns. The greater impact of these signaling schemes on the environment has been discussed-especially in case of reducing sound pollution. Use of global positioning system (GPS) and cellular data network has been avoided intentionally to ensure simplicity, cost-effectiveness and independent operation. Special emphasis has been put to ensure compatibility with any types of vehicles and thereby avoid factory level modification. These systems are successfully tested by establishing communication between two cars. IR communication has been found faster and more reliable at smaller distance than the RF communication. Both of these communication systems can be means of cost-effective reduction of sound pollution.