Driving at night is one of the most dangerous activities you can do in a car. Research from the federal government has shown that you're three times more likely to die in a nighttime car crash than in a daytime accident. That figure is no doubt heightened by the effects of drunken and drowsy driving - but poor night vision can also play a role.
That's why some car makers are trying to get their driverless vehicles to operate completely in the dark. In a recent test, Ford's engineers turned off the headlights, donned some night-vision goggles and sent their prototype Fusion sedan on a drive through the company's test track in Arizona.
WATCH: Ford tests software of its autonomous car in the pitch black:
Without being able to see the lane markings or the edge of the road, a human driver would have a hard time navigating the environment. And a sudden beam of light coming around the bend from oncoming traffic would be enough to wipe out what little night vision that driver might have had.