Abstract: Described are safety-enhancing systems for remotely controlling the delivery of electric current to the drive mechanisms of electrically powered ride-on toy vehicles. Such systems comprise a vehicle-mounted receiver module that includes a receiver capable of receiving a control signal and a control-signal-responsive relay disposed in the electrical circuit between the vehicle's energy source and drive mechanism. Receipt of an appropriate control signal actuates the relay, thereby interrupting the flow of electric current between the vehicle's power supply and drive mechanism and causing the vehicle to stop. In preferred embodiments, the control signal is transmitted by a transmitter activated by, for example, a parent observing a child operating a powered ride-on vehicle in an unsafe manner.