If you have access to a color printer, you can print signs for your front window to alert help personnel. To do so, ensure you have plain letter size white paper in your printer. Click on each of the sign links below. This should bring up an image on a separate tab. Hold the Ctrl key down while pressing P. Your print dialog should come up where you can set the parameters such as portrait, minimum margin, etc. You can then use tape to put it in a window easily seen from a passing car.