this is one of the main reason i got the spektrum dx2.0. It has a fail safe built into the system. just set it when you bind the receiver to the transmitter. works great. ive tested it a couple times by running the car up to speed then just turning the transmitter off. not half a second later the brakes are put on and it came to a halt. wouldn't run a nitro rc with out a fail safe. whether its built into your radio or a seperate device.