Abstract: A system for braking a host vehicle. A memory storing instructions executable by a processor includes instructions to actuate friction brakes in the host vehicle when a brake condition occurs. The brake condition includes that the host vehicle is parked on a roadway, a person is located exterior to the host vehicle, and an approaching vehicle will come within a distance threshold of the host vehicle.

Abstract: An arrow extension for providing GPS information of the location of an arrow is presented. The extension has a first end that has a receiving port for being coupled to an arrowhead. The extension has a power source for providing power to the extension. The power source has an actuator for changing a state of the power source. The power source also has a charging port for charging the power source. The extension has a GPS module, for determining a location and a transmitter/receiver for transmitting and receiving wireless signals. The wireless signals may be received by a device for displaying the location received in the wireless signal.