Recently launched on Google Play and iOS, the R.D. Murray app helps railroad workers improve safe travel thru signal compliance recognition. Developed by NORAC certified licensed conductor RD Murray, vipetv.com, and Reflective Layer, the very first signal app downloadable for smart devices is here. The application follows NORAC railroad signal protocol. Enthusiasts and railroad buffs, as well as signal workers, are encouraged to exercise and sharpen their knowledge with the RD Murray Signal app.