RF Wireless System for Railways is used to avoid train accidents due to track discontinuation. The system proposed in this paper involves the use of encrypted RF modules where RF receivers are placed over the train engine and RF transmitters are laid along with the track to avoid accidents due to derailment of trains. The advantage of the concept presented in this research paper is that whether any train is running over any one track or other different track, if discontinuity of the track takes place then the trains passing through that track will automatically get stopped and at the same time the warning will also be conveyed to the nearby station through buzzer. The Train module, RF Module, Control Module, Actuating Module and Braking Module are incorporated together to form system for accident avoidance due to derailment of trains due to discontinuities present in the tracks.